1006G[REBORN FROM THE ASHES组]备考日记 by dingyi0311——改变从现在开始

dingyi0311UID: 2627919

从句部分练习题（1）：
1. It was the belief _____ Alex Haley could find his “root” in Africa _____ made him decide to go to Gambia.
A. that; where        B.  where; that       C.  that; that        D.  how; which
2. I believe _____ you’ve done your best and _____ things will improve very soon.
A. whether; that       B.  不填; that       C.  that; which        D.  if; that
3. _____ was known to them that Bob had broken his promise _____ he would give them a rise.
A. What; what        B.  It; which       C.  As; that       D.  It; that
4. _____ we have finished the course, we shall start doing more revision work.
A. For now        B.  Since that  
C.  Now that        D.  By now
5. I have been keeping the portrait _____ I can see it every day, as it always reminds me of my childhood in Paris.
A. since        B.  where        C.  as        D.  if
6. _____ he was, he sat up late studying last night.A. As tired        B.  Though tired       C.  Tired as        D.  Tired although
7. --- Would you like a cigarette?--- No. It’s several years _____ I gave up smoking.
A. after       B.  since        C.  when        D.  before
8. My favorite room is the tidy study with a fireplace, _____ we can watch TV and enjoy the nice scenery outside.
A. where        B.  when        C.  that        D.  which
9. It is an interesting story and one can’t put it down _____ one has finished reading it.
A. after       B.  when        C.  unless        D.  until
10. --- Will you go to Mary’s birthday party?--- No. _____ invited, I can’t go. I’ll be too busy then.
A. If        B.  Unless        C.  Even if        D.  When
11. Actually, girls can be _____ they want to be just like boys, whether it is a pilot, an astronaut, or a general manager.
A. wherever        B.  however        C.  whatever  

D.  whoever
12. No sooner had they settled themselves in their seats in the theatre _____ the curtain went up.
A. than        B.  when        C.  before        D.  as soon as
13. We’ll start off as we planned _____.
A. no matter he will come or not       B.  no matter whether he will come or not
C.  whether is he coming or not       D.  whether he comes or not
14. To my delight, there was my purse in the back seat of the taxi, _____ the driver couldn’t possibly have seen it before.
A. that        B.  which        C.  where        D.  when
15. They wouldn’t let their cat outside _____ it would get run over.
A. otherwise        B.  supposing       C.  for fear that        D.  so that
CBDCB CBADC CABCC
从句部分练习题（2）
1. _____ is known to the world, China’s Liu Xiang became the first Asian in history to win the men’s 110m hurdles at the Olympic Games.
A. That        B.  Which        C.  As        D.  It
2. Living in the Central American desert has its problems, _____ obtaining water is not the least.
A. of which        B.  for what        C.  as        D.  whose
3. I don’t know the reason _____ you were absent from the meeting, but I am sure that someone will tell me the reason _____ you haven’t told me.
A. why; that        B.  that; why        C.  because; which        D.  of which; that
4. When she came back from abroad, Lucy told us about the cities and the people _____ she had visited.
A. that        B.  who        C.  where        D.  which
5. Because of the traffic jam _____ I was caught, I was late for the meeting.
A. by which     
B.  in which  
C.  that        D.  where
6. There are three things _____ make Sydney famous, its beautiful harbor, the Sydney Harbor Bridge and the Sydney Opera House.
A. what        B.  that        C.  when        D.  where
7. The painter lived more than a decade in Europe, _____ he could be in close touch with other artists.
A. where        B.  how        C.  when        D.  which
8. The soldiers had to sleep in their wet clothes, _____ most uncomfortable.
A. which I think it was       B.  which I think was
C.  which I think               D.  that I think was
9. The humans are destroying nature day by day, _____ of course, will cause severe punishment from it sooner or later.
A. who        B.  when        C.  where       D.  which
10. He knew the files could be of help to _____ took over the job.
A. whoever        B.  whomever        C.  whatever        D.  whosever
11. _____ China got the second place in the 2004 Olympic Games made the whole nation very excited.
A. Whenever        B.  Whether        C.  If        D.  That
12. An idea occurred to me _____ I might turn to my English teacher for help.
A. which        B.  that        C.  where        D.  when
13. _____ was of little importance.
A. Whether he passed the examination or not      B.  No matter he might pass the examination
C.  He might pass the examination                      D.  What he passed the examination
14. The thick smog covered the whole city. It was _____ a great black blanket had been thrown over it.
A. that        B.  because        C.  as if        D.  even if
15. Word came from Mr. Smith _____ he could arrive on the following Saturday.
A. about which        B.  that        C.  whether        D.  of which
(Keys: CAAAC  BABDA  DBACB
从句部分练习题（3）
1. I’ll go to the party with you _____ you don’t wear those strange trousers.
        A. on condition that        B.  as soon as       C.  as though        D.  in this case
2. I like the city, but I like the country better _____ I have more friends there.
        A. so that       B.  in that       C.  so as to        D.  in order that
3. The great use of a school education is not so much to teach you things _____ to teach you the art of learning.

  A. than        B.  rather than        C.  nor        D.  as
4. You may use my room as you like, _____ you clean it up afterwards.
        A. so far as        B.  as well as       C.  as soon as       D.  so long as
5. I shall take you back to France _____ you are well enough to travel.
        A. presently        B.  quickly        C.  directly        D.  at once
6. Let’s talk all this over again _____ we make a final decision.

      A. after        B.  while       C.  before        D.  when
7. Mr. Smith wanted to buy the house and he told me that _____ the house cost, it would be _____ it.
        A. however; worth        B.  how much; worth       C.  whatever; worth        D.  what; worthy
8. --- Why didn’t you try your best to get on the bus?
    --- I tried to, but _____ I could it started moving.
        A. until        B.  when        C.  before        D.  after
9. Perhaps _____ most separates the successful people from others is _____ they live on purpose.
        A. what; that  

B.  that; what
    C.  that; that        D.  what; what
10. I had not been reading for half an hour _____ I heard steps outside.


A. when

    B.  that        C.  while  
  D.  as
11. The parents were worried about their daughter because nobody was aware of _____ she had gone.
        A. to which        B.  the place which       C.  the place        D.  where
12. --- They don’t have much in their house yet.
      ---_____ they’re planning to live here only until Bob gets his degree, they don’t want to buy much furniture.
        A. While        B.  Although   
C.  Since
      D.  As far as
13. It was an unforgettable moment that our volleyball team won the gold medal again.
       A. that        B.  which        C.  when        D.  while
14. --- Do you know _____ Mr. Black’s address is?
      --- He may live at No. 18 or No. 19 of Bridge Street.
        A. which        B.  where        C.  what        D.  that
15. When you answer questions in a job interview, please remember the golden rule: Always give the monkey exactly _____ he wants.
        A. what        B.  which        C.  when        D.  that
16. I’ll see you after the show and give you $20 for the tickets, or _____ much they cost.
        A. whatever        B.  whether        C.  no matter        D.  however
17. We should be able to do the job for you quickly, _____ you give us all the necessary information.
        A. in case of        B.  provided that       C.  or else        D.  as if
18. I felt somewhat disappointed and was about to leave, _____ something occurred, which attracted my attention.
        A. unless        B.  until       C.  when  
D.  while
19. Determination is a kind of quality --- and that is _____ it takes to do anything well.
        A. that        B.  which        C.  why       D.  what
20. The treatment will continue until the patient reaches the point _____ he can walk correctly and safely.


A. when     
B.  where        C.  which        D.  how
21. Many policemen on duty will not be able to spare one minute to watch the football match, _____ they might only be meters away from the action.
        A. because        B.  although        C.  if        D.  where
22. After five hours’ drive, they reached _____ they thought was the place they’d been dreaming of.
        A. that        B.  where        C.  which        D.  what
23. _____ you keep on trying, I don’t really mind whether you can come out top in your class.
        A. So long as        B.  As soon as       C.  Once        D.  The moment
24. There is no doubt _____ China is always trying to keep world peace and is against any war.
        A. that        B.  whether        C.  if        D.  when
25. There is a teapot shaped like a Chinese duck, out of _____ mouth tea is supposed to come.
        A. which        B.  that        C.  its        D.  whose
[reference keys]
ABDDC  CCCAA  DBACA  DBCDB  BDAAD

dingyi0311UID: 2627919

2、名词用法讲解

名词可以分为
专有名词（Proper Nouns）
和
普通名词 (Common Nouns）。
专有名词是某个（些）人，地方，机构等专有的名称，如Beijing，China等。
普通名词是一类人或东西或是一个抽象概念的名词，如：book，sadness等。

普通名词又可分为下面四类：
1）个体名词（Individual Nouns）：表示某类人或东西中的个体，如：gun，cup，desk，student。
　 2）集体名词（Collective Nouns）：表示若干个个体组成的集合体，如：class，team，family。
　 3）物质名词（Material Nouns）：表示无法分为个体的实物，如：rice，water，cotton，air。
　 4）抽象名词（Abstract Nouns）：表示动作、状态、品质、感情等抽象概念，如：love，work，life。

个体名词和集体名词可以用数目来计算，称为可数名词（Countable Nouns）；
物质名词和抽象名词一般无法用数目计算，称为不可数名词（Uncountable Nouns）。

归纳一下，名词的分类可以下图表示：

名 词	专有名词
	普通名词	个体名词	可数名词
		集体名词
		物质名词	不可数名词
		抽象名词

1 名词复数的规则变化

情况	构成方法	读音	例词
一般情况	加 -s	1.清辅音后读/s/; 2.浊辅音和元音后 读 /z/;	map-maps bag-bags car-cars
以s,sh,ch, x等结尾的词	加 -es	读 /iz/	bus-buses watch-watches
以ce,se,ze, (d)ge等结尾 的词	加 –s	读 /iz/	license-licenses
以辅音字母+y 结尾的词	变y 为i 再加es	读 /z/	baby---babies

2 其它名词复数的规则变化
1) 以y结尾的专有名词，或元音字母+y 结尾的名词变复数时，直接加s变复数：
　
如：　two Marys
the Henrys

monkey---monkeys　 holiday---holidays
　比较：
层楼：storey ---storeys　 story---stories

2) 以o 结尾的名词，变复数时：
　　a. 加s，如： photo---photos
piano---pianos
　　　　　　　　
radio---radios　
　zoo---zoos；
　　b. 加es，如：potato--potatoes　tomato--tomatoes
c. 均可，如：zero---zeros / zeroes

3) 以f或fe 结尾的名词变复数时：
　　a. 加s，如： belief---beliefs　roof---roofs
　　　　　　　　 safe---safes　 gulf---gulfs；
　　b. 去f,fe 加ves，如：half---halves　　
　　　knife---knives　leaf---leaves　wolf---wolves
　　　wife---wives　life---lives　thief---thieves；
　　c. 均可,如：　handkerchief:
　　　　　　　 handkerchiefs / handkerchieves

3 名词复数的不规则变化
1）child---children
　foot---feet　
tooth---teeth
　　mouse---mice　　
man---men　 woman---women　
注意：与 man 和 woman构成的合成词，其复数形式也是 -men 和-women。
　如： an Englishman, two Englishmen.但German不是合成词，故复数形式为Germans；Bowman是姓，其复数是the Bowmans。

2）单复同形　如：
　　deer，sheep，fish，Chinese，Japanese
　　li，jin，yuan，two li，three mu，four jin　
但除人民币元、角、分外，美元、英镑、法郎等都有复数形式。
如:
a dollar, two dollars; a meter, two meters

3）集体名词，以单数形式出现，但实为复数。
　
如： people　police　cattle 等本身就是复数，不能说 a people，a police，a cattle，但可以说 a person，a policeman，a head of cattle, the English，the British，the French，the Chinese，the Japanese，the Swiss 等名词，表示国民总称时，作复数用。
　　　如： The Chinese are industries and brave.　中国人民是勤劳勇敢的。

4）以s结尾，仍为单数的名词，如：
　　 a. maths, politics, physics等学科名词，为不可数名词，是单数。
　　 b. news 是不可数名词。
　　 c. the United States，the United Nations 应视为单数。
　　　The United Nations was organized in 1945. 联合国是1945年组建起来的。
　　 d. 以复数形式出现的书名，剧名，报纸，杂志名，也可视为单数。
　　　"The Arabian Nights" is a very interesting story-book.
　　　<<一千零一夜>>是一本非常有趣的故事书。

5) 表示由两部分构成的东西，如：glasses (眼镜)　trousers,　clothes
　
若表达具体数目，要借助数量词 pair(对，双);　suit(套); a pair of glasses; two pairs of trousers


6）
另外还有一些名词，其复数形式有时可表示特别意思，如：goods货物，waters水域，fishes（各种）鱼

dingyi0311UID: 2627919

4 不可数名词量的表示
1）物质名词
　　a. 当物质名词转化为个体名词时。
　　　
比较：　Cake is a kind of food.　蛋糕是一种食物。 (不可数)
　　　　　　　 These cakes are sweet.　这些蛋糕很好吃。 (可数)
　　b. 当物质名词表示该物质的种类时，名词可数。
　　　This factory produces steel.　(不可数)
　　　We need various steels.　(可数)
　　c. 当物质名词表示份数时，可数。
　　　Our country is famous for tea.
　　　我国因茶叶而闻名。
　　　Two teas, please.
　　　请来两杯茶。

2）
抽象名词有时也可数。
　　four freedoms 四大自由
　　the four modernizations四个现代化
　　物质名词和抽象名词可以借助单位词表一定的数量。
　　如：
　　a glass of water 一杯水　
　　a piece of advice　一条建议

5 定语名词的复数
名词作定语一般用单数，但也有以下例外。
　1) 用复数作定语。
　　
如：sports meeting 运动会
　　　　 students reading-room 学生阅览室　
　　　　 talks table 谈判桌　
　　　　 the foreign languages department 外语系

2) man, woman, gentleman等作定语时，其单复数以所修饰的名词的单复数而定。
　
如：men workers　　women teachers
gentlemen officials

3) 有些原有s结尾的名词，作定语时，s保留。
　
如：goods train (货车)
　　　 arms produce　武器生产
　　　 customs papers 海关文件
　　　 clothes brush衣刷

4) 数词+名词作定语时，这个名词一般保留单数形式。
　如：two-dozen eggs　两打/（二十四个鸡蛋)　
　
　 a ten-mile walk 十里路　

　　 two-hundred trees 两百棵树
　
　 a five-year plan.　一个五年计划
　　
个别的有用复数作定语的，如： a seven-years child

6 不同国家的人的单复数

名称　      　总称(谓语用复数）　一个人　　两个人

the                    a/an　　　　two

中国人　　the Chinese　　  a Chinese　 two Chinese 瑞士人　　the Swiss            a Swiss　　   two Swiss 日本人　　the Japanese　　a Japanese　 two Japanese

法国人　　the French　    a Frenchman　 two Frenchmen 英国人　　the English　　an Englishman　 two Englishmen

德国人　　the Germans　　a Germans　　two Germans

澳大利亚人Australians　　  an Australian　two Australians 俄国人　　the Russians　　a Russian　　  two Russians 意大利人　the Italians　　 an Italian　       two Italians 希腊人　　the Greek    　　a Greek　　    two Greeks 美国人　　the Americans　an American　  two Americans 印度人　　the Indians　　  an Indian　　 two Indians 加拿大人　the Canadians　a Canadian　 two Canadians 瑞典人　　the Swedish　　a Swede　  　two Swedes

7 名词的格
在英语中有些名词可以加"'s"来表示所有关系，带这种词尾的名词形式称为该名词的所有格，如：a teacher's book。名词所有格的规则如下：
1）
单数名词词尾加"'s"，复数名词词尾没有s，也要加"'s"，
如the boy's bag 男孩的书包，men's room 男厕所。
2）
若名词已有复数词尾-s ，只加"'"，
如：the workers' struggle　工人的斗争。
3）
凡不能加"'s"的名词，都可以用"名词+of +名词"的结构来表示所有关系，
如：the title of the song 歌的名字。
4）
在表示店铺或教堂的名字或某人的家时，名词所有格的后面常常不出现它所修饰的名词，
如：the barber's 理发店。
5）
如果两个名词并列，并且分别有's，则表示"分别有"；只有一个's，则表示'共有'。

如：John's and Mary's room（两间）　　John and Mary's room（一间）
6）
复合名词或短语，'s 加在最后一个词的词尾。
　
如：a month or two's absence

dingyi0311UID: 2627919

3、名词用法难点

一、
关于特殊名词的具体考点如下：、
　　1．容易误用为复数的不可数名词：(这些名词一般不能用作复数，谓语动词用单数)
　　advice 建议，忠告 living 生活，生计
　　equipment 装备，设备 progress 前进，发展
　　furniture 家具，设备 scenery 风景，景色
　　information 通知；信息 machinery 机器，机械
　　knowledge 知识，学问 traffic 交通流量
　　baggage / luggage 行李，皮箱 trouble 烦恼，麻烦
　　cash 现金 thunder 雷声，轰隆声
　　apparatus 仪器 weather 天气，处境
　　clothing 衣服 work 工作，劳动
　　paper 纸，钞票 luck 运气，幸运
　　technology 工艺，技术
jewelry 珠宝
　　2．
复数形式的名词用于单数概念，其谓语动词用单数。(这些名词一般为表示学科或疾病的名词)
　　economics 经济学 measles 麻疹

　　physics 物理学 mumps 腮腺炎
　　mathematics 数学 rickets 软骨病，佝偻病
　　dynamics 动力学 news 新闻
　　The United States 美国 The New York Times 纽约时报

后面的在主谓一致中已经说了

dingyi0311UID: 2627919

连词是一种虚词， 它不能独立担任句子成分而只起连接词与词，短语与短语以及句与句的作用。连词主要可分为两类：并列连词和从属连词。并列连词用来连接平行的词、词组和分句。如：and, but, or, nor, so, therefore, yet, however, for, hence, as well as, both…and, not only…but also, either…or, neither…nor, (and)then等等。


1 并列连词与并列结构

并列连词引导两个并列的句子。
1)and 与or
判断改错：
(错) They sat down and talk about something.

(错) They started to dance and sang.
(错) I saw two men sitting behind and whisper there.
(对) They sat down and talked about something.
(对) They started to dance and sing.
(对)I saw two men sitting behind and whispering there.

解析：

第一句： and 连接两个并列的谓语，所以 talk 应改为 talked。
第二句：and 连接两个并列的动词不定式，第二个不定式往往省略to，因此sang 应改为 sing。
第三句：and 连接感观动词saw 后面的用作的宾补的两个并列分词结构，因此whisper应改为whispering。
注意：and 还可以和祈使句或名词词组连用表示条件。（or也有此用法）


Make up your mind, and you'll get the chance.

= If you make up your mind, you'll get the chance.

One more effort, and you'll succeed.

= If you make one more effort, you'll succeed.

2)both …and两者都
She plays (both) the piano and the guitar.

3)not only…but (also), as well as不但…而且）
She plays not only the piano, but (also) the guitar.


注意： not only… but also 关联两个分句时，一个分句因有否定词not 而必须倒装。

Not only does he like reading stories, but also he can even write some.

4)neithe…nor 意思为"既不……也不……"谓语动词采用就近原则，与nor后的词保持一致。
Neither you nor he is to blame.

2 比较and和or
1) 并列结构中，or通常用于否定句，and用于肯定句。
2) 但有时and 也可用于否定句。请注意其不同特点：

There is no air or water in the moon.

There is no air and no water on the moon.
在否定中并列结构用or 连接，但含有两个否定词的句子实际被看作是肯定结构，因此要用and。
典型例题
---I don't like chicken ___ fish.
---I don't like chicken, ___ I like fish very much.
A. and； and B. and； but C. or； but D. or；and
答案C。否定句中表并列用or, but 表转折。
判断改错：
(错) We will die without air and water.
(错) We can't live without air or water.
(对) We will die without air or water.
(对) We can't live without air and water.


3 表示选择的并列结构
1) or意思为"否则"。

I must work hard, or I'll fail in the exam.

2) either…or意思为"或者……或者 ……"。注意谓语动词采用就近原则。

Either you or I am right.


4 表示转折或对比

1) but表示转折，while表示对比。
Some people love cats, while others hate them.

典型例题
--- Would you like to come to dinner tonight?
--- I'd like to, ___ I'm too busy.
A. and B. so C. as D. but
答案D。but与前面形成转折，符合语意。而表并列的and， 结果的so，原因的as都不符合句意。

2) not…but… 意思为"不是 ……而是……"

not 和but 后面的用词要遵循一致原则。

They were not the bones of an animal, but (the bones) of a human being.

5 表原因关系

1) for
判断改错：

(错) For he is ill, he is absent today.

(对) He is absent today, for he is ill.
for是并列连词，不能置于含两个并列分句的句子的句首，只能将其放在两个分句中间。

2) so, therefore
He hurt his leg, so he couldn't play in the game.

注意：

a. 两个并列连词不能连用，但therefore, then, yet.可以和并列连词连用。
You can watch TV, and or you can go to bed.
He hurt his leg, and so / and therefore he couldn't play in the game.


b. although… yet…，但although不与 but连用。

(错)Although he was weak, but he tried his best to do the work..

(对)Although he was weak, yet he tried his best to do the work.

6 比较so和 such

其规律由so与such的不同词性决定。such 是形容词，修饰名词或名词词组，so是副词，只能修饰形容词或副
词。so 还可与表示数量的形容词many，few，much， little连用，形成固定搭配。

so + adj. such + a(n) + n.
so + adj. + a(n) + n. such + n. (pl.)
so + adj. + n. (pl.) such +n. (pl.)
so + adj. + n. [不可数]such +n. [不可数]

so foolish such a fool
so nice a flower such a nice flower
so many/ few flowers such nice flowers
so much/little money. such rapid progress
so many people such a lot of people


so many 已成固定搭配，a lot of 虽相当于 many，但 a lot of 为名词性的，只能用such搭配。
so…that与such…that之间的转换既为 so与such之间的转换

dingyi0311UID: 2627919

额，我想其他的语法我就没有必要一点一点的看了贴上来了吧，我就在下面一点一点看了

dingyi0311UID: 2627919

今天的任务是十篇高频

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动词

1） 表示动作中状态的词叫做动词。

2） 根据其在句中的功能，动词可分为四类，分别是：实义动词（Notional Verb）、系动词（Link Verb）、助动词（Auxiliary Verb）、情态动词（Modal Verb）。
说明：有些情况下，有些动词是兼类词，例如：
We are having a meeting. 我们正在开会。 （having是实义动词。）
He has gone to New York.他已去纽约。
（has 是助动词。）

3） 动词根据其后是否带有宾语，可分为两类，分别是：及物动词（Transitive Verb）、不及物动词（Intransitive Verb），缩写形式分别为vt. 和vi.。
说明：同一动词有时可用作及物动词，有时可用作不及物动词。例如：
She can dance and sing.
她能唱歌又能跳舞。（sing在此用作不及物动词。）
She can sing many English songs.
她能唱好多首英文歌曲。（sing用作及物动词。）

4） 根据是否受主语的人称和数的限制，可分两类，分别是：限定动词（Finite Verb）、非限定动词（Non-finite Verb）例如：
She sings very well.
她唱得很好。（sing受主语she的限制，故用第三人称单数形式sings。）
She wants to learn English well.
她想学好英语。（to learn不受主语she的限制，没有词形变化，是非限定动词。
说明：英语中总共有三种非限定动词，分别是：动词不定式（Infinitive）、动名词（Gerund）、分词（Participle）。

5)根据动词的组成形式，可分为三类，分别是：单字词（One-Word Verb）、短语动词（Phrasal Verb）、动词短语（Verbal Phrase）例如：（动词短语和短语动词还有区别啊，晕死）

The English language contains many phrasal verbs and verbal phrases.

英语里有许多短语动词和动词短语。（contains是单字动词。）


Students should learn to look up new words in dictionaries.

学生们学会查字典。（look up是短语动词。）


The young ought to take care of the old.

年轻人应照料老人。（take care of是动词短语。）

6）动词有五种形态，分别是：原形（Original Form）、第三人称单数形式（Singular From in Third Personal）、过去式（Past Form）、过去分词（Past Participle）、现在分词（Present Participle）。

1 系动词

系动词亦称联系动词（Link Verb），作为系动词，它本身有词义，但不能单独用作谓语，后边必须跟表语（亦称补语），构成系表结构说明主语的状况、性质、特征等情况。
说明：
有些系动词又是实义动词，该动词表达实义时，有词义，可单独作谓语，例如：
He fell ill yesterday.
他昨天病了。（fell是系动词，后跟补足语，说明主语情况。）
He fell off the ladder.
他从梯子上摔下来。fell是实义动词，单独作谓语。

1）状态系动词
用来表示主语状态，只有be一词，例如：
He is a teacher.他是一名教师。（is与补足语一起说明主语的身份。）

2）持续系动词
用来表示主语继续或保持一种状况或态度，主要有keep, rest, remain, stay, lie, stand, 例如：
He always kept silent at meeting. 他开会时总保持沉默。
This matter rests a mystery. 此事仍是一个谜。

3）表像系动词
用来表示"看起来像"这一概念，主要有seem, appear, look, 例如：
He looks tired. 他看起来很累。
He seems (to be) very sad. 他看起来很伤心。

4）感官系动词
感官系动词主要有feel, smell, sound, taste, 例如：
This kind of cloth feels very soft.

这种布手感很软。
This flower smells very sweet.
这朵花闻起来很香。

5）变化系动词
这些系动词表示主语变成什么样，变化系动词主要有become, grow, turn, fall, get, go, come, run.
例如：
He became mad after that. 自那之后，他疯了。
She grew rich within a short time. 她没多长时间就富了。

6）终止系动词
表示主语已终止动作，主要有prove, trun out, 表达"证实"，"变成"之意，例如：
The rumor proved false.这谣言证实有假。
The search proved difficult.搜查证实很难。
His plan turned out a success. 他的计划终于成功了。（turn out表终止性结果）

2 什么是助动词

1）协助主要动词构成谓语动词词组的词叫助动词（Auxiliary Verb）。被协助的动词称作主要动词（Main Verb）。
助动词自身没有词义，不可单独使用，例如：
He doesn't like English.他不喜欢英语。
（doesn't是助动词，无词义；like是主要动词，有词义)

2） 助动词协助主要动词完成以下功用，可以用来：

a. 表示时态，例如：
He is singing.他在唱歌。
He has got married.他已结婚。

b. 表示语态，例如：
He was sent to England.他被派往英国。

c. 构成疑问句，例如：
Do you like college life?你喜欢大学生活吗？
Did you study English before you came here? 你来这儿之前学过英语吗？

d. 与否定副词not合用，构成否定句，例如：
I don't like him. 我不喜欢他。

e. 加强语气，例如：
Do come to the party tomorrow evening. 明天晚上一定来参加晚会。
He did know that. 他的确知道那件事。
3） 最常用的助动词有：be, have, do, shall, will, should, would

3 助动词be的用法

1） be +现在分词，构成进行时态，例如：
They are having a meeting.他们正在开会。
English is becoming more and more important. 英语现在越来越重要。

2)be + 过去分词，构成被动语态，例如：
The window was broken by Tom..窗户是汤姆打碎的。
English is taught throughout the world.世界各地都教英语。

3） be + 动词不定式，可表示下列内容：
a. 表示最近、未来的计划或安排，例如：
He is to go to New York next week..他下周要去纽约。
We are to teach the fresh persons.我们要教新生。
说明： 这种用法也可以说成是一种将来时态表达法。
b. 表示命令，例如：
You are to explain this.对此你要做出解释。
He is to come to the office this afternoon.要他今天下午来办公室。
c.征求意见，例如：
How am I to answer him?我该怎样答复他？
Who is to go there?谁该去那儿呢？

d. 表示相约、商定，例如：
We are to meet at the school gate at seven tomorrow morning.我们明天早晨7点在校门口集合。

4 助动词have的用法

1）have +过去分词，构成完成时态，例如：
He has left for London.他已去了伦敦。
By the end of last month, they had finished half of their work.
上月未为止，他们已经完成工作的一半。

2）have + been +现在分词，构成完成进行时，例如：

I have been studying English for ten years.

我一直在学英语，已达十年之久。

3）have+ been +过去分词，构成完成式被动语态，例如：

English has been taught in China for many years.

中国教英语已经多年。

5 助动词do 的用法

1） 构成一般疑问句，例如：

Do you want to pass the CET?你想通过大学英语测试吗？

Did you study German?你们学过德语吗？

2） do + not 构成否定句，例如：

I do not want to be criticized. 我不想挨批评。

He doesn't like to study. 他不想学习。

In the past, many students did not know the importance of English.过去，好多学生不知道英语的重要性。

3)构成否定祈使句，例如：
Don't go there.不要去那里。
Don't be so absent-minded. 不要这么心不在焉。
说明： 构成否定祈使句只用do，不用did和does。

4） 放在动词原形前，加强该动词的语气，例如：
Do come to my birthday party.一定来参加我的生日宴会。
I did go there.我确实去那儿了。
I do miss you.我确实想你。

5） 用于倒装句，例如：
Never did I hear of such a thing. 我从未听说过这样的事情。
Only when we begin our college life do we realize the importance of English.
只有在开始大学生活时我们才认识到英语的重要性。
说明： 引导此类倒装句的副词有never, seldom, rarely, little, only, so, well等。

6） 用作代动词，例如：
---- Do you like Beijing?--你喜欢北京吗？
---- Yes, I do.--是的，喜欢。（do用作代动词，代替like Beijing.）
He knows how to drive a car, doesn't he?
他知道如何开车，对吧？

6 助动词shall和will的用法

shall和will作为助动词可以与动词原形一起构成一般将来时，例如：
I shall study harder at English. 我将更加努力地学习英语。
He will go to Shanghai.他要去上海。
说明：
在过去的语法中，语法学家说shall用于第一人称，will 只用于第二、第三人称。现在，尤其是在口语中，will常用于第一人称，但shall只用于第一人称，如用于第二、第三人称，就失去助动词的意义，已变为情态动词，试比较:

He shall come.他必须来。（shall有命令的意味。）
He will come.他要来。（will只与动词原形构成一般将来时。）

7 助动词should, would的用法

1）should无词义，只是shall的过去形式，与动词原形构成过去将来时，只用于第一人称，例如：

I telephoned him yesterday to ask what I should do next week.

我昨天给他打电话，问他我下周干什么。
比较：

"What shall I do next week?"I asked.

"我下周干什么？"我问道。（可以说，shall变成间接引语时，变成了should。）

2） would也无词义，是 will的过去形式，与动词原形构成过去将来时，用于第二、第三人称，例如：
He said he would come. 他说他要来。
比较：
"I will go," he said. 他说："我要去那儿。"
变成间接引语，就成了：
He said he would come.
原来的will变成would，go变成了come.。

8 短语动词

动词加小品构成的起动词作用的短语叫短语动词（Phrasal Verb）。例如：
Turn off the radio.把收音机关上。（turn off是短语动词）
短语动词的构成基本有下列几种：
1） 动词+副词，如：black out；
2） 动词+介词，如：look into；
3） 动词+副词+介词，如：look forward to。构成短语动词的副词和介词都统称为小品词（Particle）。

9 非谓语动词

在句子中充当除谓语以外的句子成分的动词形式叫做非谓语动词。非谓语动词分为三种形式:不定式，动名词，和分词(分词包括现在分词和过去分词)。

dingyi0311UID: 2627919

    动词的语态
语态有两种：主动语态和被动语态。
主语是动作的发出者为主动语态；主语是动作的接受者为被动语态。
1）若宾语补足语是不带to 的不定式，变为被动语态时，该不定式前要加"to"。此类动词为感官动词。
feel, hear, help, listen to, look at, make, observe, see, notice, watch

The teacher made me go out of the classroom.
--> I was made to go out of the classroom (by the teacher).
We saw him play football on the playground.
--> He was seen to play football on the playground.
这个要点以前忘记了啊。。。。。。
2）情态动词+ be +过去分词，构成被动语态。

Coal can be used to produce electricity for agriculture and industry.

1 let 的用法

1）当let后只有一个单音节动词，变被动语态时，可用不带to 的不定式。

They let the strange go.---> The strange was let go.

2） 若let 后宾补较长时，let 通常不用被动语态，而用allow或permit 代替。
The nurse let me go to see my classmate in the hospital.
----> I was allowed / permitted to see my classmate in the hospital.

2 短语动词的被动语态

短语动词是一个整体，不可丢掉后面的介词或副词。
This is a photo of the power station that has been set up in my hometown.
My sister will be taken care of by Grandma.
Such a thing has never been heard of before..

3 表示"据说"或"相信" 的词组

believe, consider, declare, expect, feel , report, say, see, suppose, think, understand
It is said that… 据说
It is reported that… 据报道
It is believed that…大家相信
It is hoped that…大家希望
It is well known that… 众所周知
It is thought that…大家认为
It is suggested that…据建议
It is taken granted that… 被视为当然
It has been decided that… 大家决定
It must be remember that…务必记住的是
It is said that she will leave for Wuhan on Tuesday.

4 不用被动语态的情况

1) 不及物动词或动词短语无被动语态：
appear, die disappear, end (vi. 结束), fail, happen, last, lie, remain, sit, spread, stand
break out, come true, fall asleep, keep silence, lose heart, take place.
After the fire, very little remained of my house.
比较： rise, fall, happen是不及物动词；raise, seat是及物动词。
(错) The price has been risen.
(对) The price has risen.
(错) The accident was happened last week.
(对) The accident happened last week.
(错) The price has raised.
(对) The price has been raised.
(错) Please seat.
(对) Please be seated.
要想正确地使用被动语态，就须注意哪些动词是及物的，哪些是不及物的。特别是一词多义的动词往往有两种用法。解决这一问题唯有在学习过程中多留意积累。
一开始没有注意，现在发现还是有很多不知道的东西啊

2) 不能用于被动语态的及物动词或动词短语：
fit, have, hold, marry, own, wish, cost, notice, watch agree with, arrive at / in, shake hands with, succeed in, suffer from, happen to, take part in, walk into, belong to
This key just fits the lock.

Your story agrees with what had already been heard.

3) 系动词无被动语态：
appear, be become, fall, feel, get, grow, keep, look, remain, seem, smell, sound, stay, taste, turn

It sounds good.

4) 带同源宾语的及物动词，反身代词，相互代词，不能用于被动语态：
die, death, dream, live, life
She dreamed a bad dream last night.

5) 当宾语是不定式时，很少用于被动语态。

(对) She likes to swim.

(错) To swim is liked by her.
5 主动形式表示被动意义

1)wash, clean, cook, iron, look, cut, sell, read, wear, feel, draw, write, sell, drive…
The book sells well.这本书销路好。
This knife cuts easily. 这刀子很好用。

2)blame, let(出租), remain, keep, rent, build
I was to blame for the accident.
Much work remains.

3) 在need, require, want, worth (形容词), deserve后的动名词必须用主动形式。
The door needs repairing.= The door needs to be repaired.
This room needs cleaning. 这房间应该打扫一下。
This book is worth reading.这本书值得一读。

4) 特殊结构：make sb. heard / understood (使别人能听见/理解自己)，have sth. done ( 要某人做某事)。

6 被动形式表示主动意义

be determined, be pleased, be graduated (from), be finished, be prepared (for), be occupied (in), get marries
He is graduated from a famous university.
他毕业于一所有名的大学。
注意： 表示同某人结婚，用marry sb. 或get married to sb. 都可。
He married a rich girl.
He got married to a rich girl.

7 need/want/require/worth

注意：当 need, want, require, worth(形容词)后面接doing也可以表示被动。
Your hair wants cutting.你的头发该理了。
The floor requires washing. 地板需要冲洗。
The book is worth reading.这本书值得一读。
典型例题
The library needs___, but it'll have to wait until Sunday.
A. cleaning B. be cleaned C. clean D. being cleaned
答案A. need (实意) +n /to do，need (情态)+ do，当为被动语态时，还可need + doing. 本题考最后一种用法，选 A。如有to be clean 则也为正确答案。
典：done，"不可能已经"。must not do 不可以（用于一般现在时)。

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     独立主格
==========================

1 独立主格

（一）：独立主格结构的构成：
名词(代词)+现在分词、过去分词；
名词(代词)+形容词；
名词(代词)+副词；
名词(代词)+不定式；
名词(代词) +介词短语构成。

（二） 独立主格结构的特点：

1）独立主格结构的逻辑主语与句子的主语不同，它独立存在。
2）名词或代词与后面的分词，形容词，副词，不定 式，介词等是主谓关系。
3）独立主格结构一般有逗号与主句分开。

举例：
The test finished, we began our holiday.
= When the test was finished, we began our holiday.
考试结束了，我们开始放假。

The president assassinated, the whole country was in deep sorrow.
= After the president was assassinated, the whole country was in deep sorrow.
总统被谋杀了，举国上下沉浸在悲哀之中。

Weather permitting, we are going to visit you tomorrow.
如果天气允许，我们明天去看你。
This done, we went home.
工作完成后，我们才回家。

The meeting gone over, everyone tired to go home earlier.
会议结束后，每个人都想早点回家。

He came into the room, his ears red with cold.
他回到了房子里，耳朵冻坏了。

He came out of the library, a large book under his arm.
他夹着本厚书，走出了图书馆

2 With的复合结构作独立主格

表伴随时，既可用分词的独立结构，也可用with的复合结构。
with +名词(代词)+现在分词/过去分词/形容词/副词/不定式/介词短语
举例: He stood there, his hand raised.

= He stood there, with his hand raise.

典型例题

The murder was brought in, with his hands ___ behind his back。
A. being tied B. having tiedC. to be tiedD. tied
答案D. with +名词（代词）+分词+介词短语结构。当分词表示伴随状况时，其主语常常用with来引导。由于本句中名词"手"与分词"绑"是被动关系，因此用过去分词，选D.

注意:

1) 独立主格结构使用介词的问题：

当介词是in 时，其前后的两个名词均不加任何成分（如物主代词或冠词），也不用复数。但 with 的复合结构不受此限制

A robber burst into the room, knife in hand.

( hand前不能加his)。

2) 当表人体部位的词做逻辑主语时，及物动词用现在分 词，不及物动词用过去分词。

He lay there, his teeth set, his hand clenched, his eyes looking straight up.


典型例题：
Weather___, we'll go out for a walk.
A permitted B permitting C permits D for permitting

答案 B. 本题中没有连词，它不是复合句，也不是并列句。句中使用了逗号，且we 小写，可知其不是两个简单句。能够这样使用的只有独立主格或with的复合结构。据此判断，本句中使用的是独立结构， 其结构为：名词+分词。由于permit在这里翻译为'天气允许'，表主动，应用现在分词，故选B。
如果不会判断独立结构作状语的形式，不妨将句子改为条件句，例如本句改为If weather permits, we'll go out for a walk. 然后将if 去掉，再将谓语动词改为非谓语动词即可。


==========================
                            特殊词
==========================


1 stop doing/to do

stop to do停止，中断做某事后去做另一件事。
stop doing停止做某事。
They stop to smoke a cigarette. 他们停下来，抽了根烟。
I must stop smoking. 我必须戒烟了。
典型例题
She reached the top of the hill and stopped ___on a big rock by the side of the path.
A. to have restedB. resting C. to restD. rest
答案： C。由题意可知，她到了山顶，停下来在一个路边的大石头上休息。因此，应选择"stop to do sth. 停下来去做另一件事"。而不仅仅是爬山动作的终止，所以stop doing sth.不正确。

2 forget doing/to do

forget to do忘记要去做某事。(未做)
forget doing忘记做过某事。(已做)
The light in the office is stil on. He forgot to turn it off.
办公室的灯还在亮着，它忘记关了。(没有做关灯的动作)
He forgot turning the light off.
他忘记他已经关了灯了。 ( 已做过关灯的动作)
Don't forget to come tomorrow.
别忘了明天来。 (to come动作未做)
典型例题
---- The light in the office is still on.
---- Oh，I forgot___.

A. turning it off B. turn it off C. to turn it off D. having turned it off

答案：C。由the light is still on 可知灯亮着，即关灯的动作没有发生，因此用forget to do sth.
而forget doing sth表示灯已经关上了，而自己忘记了这一事实。此处不符合题意。

3 remember doing/to do

remember to do 记得去做某事 (未做)
remember doing记得做过某事 (已做)

Remember to go to the post office after school.
记着放学后去趟邮局。
Don't you remember seeing the man before?
你不记得以前见过那个人吗?

4 regret doing/to do

regret to do 对要做的事遗憾。(未做)
regret doing 对做过的事遗憾、后悔。(已做)
I regret to have to do this, but I have no choice.
我很遗憾必须这样去做，我实在没有办法。
I don't regret telling her what I thought.
我不为告诉她我的想法而后悔。
典型例题
---You were brave enough to raise objections at the meeting.
---Well, now I regret ___ that.
A. to do B. to be doing C.to have done D.having done
答案：D。regret having done sth. 对已发生的事感到遗憾。regret to do sth. 对将要做的事感到遗憾。本题为对已说的话感到后悔，因此选D。

5 cease doing/to do

cease to do 长时间，甚至永远停做某事。
cease doing 短时停止做某事，以后还会接着做。

That department has ceased to exist forever.
那个部门已不复存在。
The girls ceased chatting for a moment when their teacher passed by.
姑娘们在老师走过时，停了会聊天。

6 try doing/to do

try to do努力，企图做某事。
try doing 试验，试着做某事。

You must try to be more careful.
你可要多加小心。
I tried gardening but didn't succeed.
我试着种果木花卉，但未成功。

7 go on doing/to do

go on to do做了一件事后，接着做另一件事。
go on doing 继续做原来做的事。

After he had finished his maths，he went on to do his physics.

做完数学后，他接着去做物理。

Go on doing the other exercise after you have finished this one.

作完这个练习后，接着做其他的练习

8 be afraid doing/to do

be afraid to do不敢，胆怯去做某事，是主观上的原因不去做，意为"怕"；
be afraid of doing担心出现doing的状况、结果。 doing 是客观上造成的，意为"生怕，恐怕"。

She was afraid to step further in grass because she was afraid of being bitten by a snake.
她生怕被蛇咬着，而不敢在草丛中再走一步。
She was afraid to wake her husband.
她不敢去叫醒她丈夫。
She was afraid of waking her husband.
她生怕吵醒她丈夫。

9 be interested doing/to do

interested to do 对做某事感兴趣，想了解某事。
interested in doing 对某种想法感兴趣，doing 通常为想法。

I shall be interested to know what happens.
我很想知道发生了什么事。 (想了解)
I'm interested in working in Switzerland. Do you have any idea about that?
我对在瑞士工作感兴趣。你想过这事吗? (一种想法)

10 mean to doing/to do
mean to do 打算、想
mean doing意味着
I mean to go, but my father would not allow me to.
我想去，但是我父亲不肯让我去。
To raise wage means increasing purchasing power.
赠加工资意味着增加购买力。

11 begin(start) doing/to do

begin / start to do sth
begin / start doing sth.

1)谈及一项长期活动或开始一种习惯时，使用doing.

How old were you when you first started playing the piano?

你几岁时开始弹钢琴？
2)begin, start用进行时时，后面动词用不定式to do
I was beginning to get angry。
我开始生起气来。
3)在attempt, intend, begin, start 后接 know, understand, realize这类动词时，常用不定式to do。
I begin to understand the truth。
我开始明白真相。
4)物作主语时
It began to melt.

12 感官动词 + doing/to do

感官动词 see, watch, observe, notice, look at, hear, listen to, smell, taste, feel + do 表示动作的完整性，真实性； +doing 表示动作的连续性，进行性

I saw him work in the garden yesterday.
昨天我看见他在花园里干活了。(强调"我看见了"这个事实)
I saw him working in the garden yesterday.（强调"我见他正干活"这个动作）
昨天我见他正在花园里干活。
典型例题
1）They knew her very well. They had seen her ___ up from childhood.

A. grow B. grew C. was growing D. to grow

答案：A。因题意为，他们看着她长大，因此强调的是成长的过程，而非正在长的动作，因此用see sb do sth 的句型。

2）The missing boy was last seen ___ near the river.
A. playing B. to be playingC. play D. to play
答案A. 本题强调其动作，正在河边玩，应此用see sb. doing sth句型。

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Active and Passive Voice

This resource was written by Purdue OWL.
Last full revision by April Toadvine.
Last edited by Allen Brizee on March 5th 2009 at 2:24PM
Summary: This handout will explain the difference between active and passive voice in writing. It gives examples of both, and shows how to turn a passive sentence into an active one. Also, it explains how to decide when to choose passive voice instead of active.

Active and Passive Voice

Using Active Versus Passive Voice

In a sentence using active voice, the subject of the sentence performs the action expressed in the verb.
Each example above includes a sentence subject performing the action expressed by the verb.



Active Versus Passive Voice

Active voice is used for most non-scientific writing. Using active voice for the majority of your sentences makes your meaning clear for readers, and keeps the sentences from becoming too complicated or wordy. Even in scientific writing, too much use of passive voice can cloud the meaning of your sentences.（我们应该是写scientific writing，应该少用active voice？）
Sentences in active voice are also more concise than those in passive voice because fewer words are required to express action in active voice than in passive.



More about Passive Voice

In a sentence using passive voice, the subject is acted upon; he or she receives the action expressed by the verb. The agent performing the action may appear in a "by the..." phrase or may be omitted.
Reasons to Generally Avoid Passive Voice

Sometimes the use of passive voice can create awkward sentences, as in the last example above. Also, overuse of passive voice throughout an essay can cause your prose to seem flat and uninteresting.

In scientific writing, however, passive voice is more readily accepted since using it allows one to write without using personal pronouns or the names of particular researchers as the subjects of sentences (see the third example above).

This practice helps to create the appearance of an objective, fact-based discourse because writers can present research and conclusions without attributing them to particular agents. Instead, the writing appears to convey information that is not limited or biased by individual perspectives or personal interests.

Recognizing Passive Voice

You can recognize passive-voice expressions because the verb phrase will always include a form of be, such as am, is, was, were, are, or been. The presence of a be-verb, however, does not necessarily mean that the sentence is in passive voice. Another way to recognize passive-voice sentences is that they may include a "by the..." phrase after the verb; the agent performing the action, if named, is the object of the preposition in this phrase.

Helpful Hint

You can recognize passive voice because the verb phrase will include a form of be (was, am, are, been, is). Don't assume that just because there is a form of 'be' that the sentence is passive, however. Sometimes a prepositional phrase like "by the" in the sentences above indicates that the action is performed on the subject, and that the sentence is passive.

Choosing Passive VoiceChoosing Passive VoiceWhile active voice helps to create clear and direct sentences, sometimes writers find using an indirect expression is rhetorically effective in a given situation, so they choose passive voice.

Also, writers in the sciences conventionally use passive voice more often than writers in other discourses. Passive voice makes sense when the agent performing the action is obvious, unimportant, or unknown or when a writer wishes to postpone mentioning the agent until the last part of the sentence or to avoid mentioning the agent at all. The passive voice is effective in such circumstances because it highlights the action and what is acted upon rather than the agent performing the action.

Active	Passive
The dispatcher is notifying police that three prisoners have escaped.	Police are being notified that three prisoners have escaped.
Surgeons successfully performed a new experimental liver-transplant operation yesterday.	A new experimental liver-transplant operation was performed successfully yesterday.
"Authorities make rules to be broken," he said defiantly.	"Rules are made to be broken," he said defiantly.

In each of these examples, the passive voice makes sense because the agent is relatively unimportant compared to the action itself and what is acted upon.



Changing Passive to Active Voice

If you want to change a passive-voice sentence to active voice, find the agent in a "by the..." phrase, or consider carefully who or what is performing the action expressed in the verb. Make that agent the subject of the sentence, and change the verb accordingly. Sometimes you will need to infer the agent from the surrounding sentences which provide context.

If you want to change an active-voice sentence to passive voice, consider carefully who or what is performing the action expressed in the verb, and then make that agent the object of a "by the..." phrase. Make what is acted upon the subject of the sentence, and change the verb to a form of be + past participle. Including an explicit "by the..." phrase is optional.



Further Suggestions for Using Passive and Active Voices

1. Avoid starting a sentence in active voice and then shifting to passive.

Unnecessary shift in voice	Revised
Many customers in the restaurant found the coffee too bitter to drink, but it was still ordered frequently.	Many customers in the restaurant found the coffee too bitter to drink, but they still ordered it frequently.
He tried to act cool when he slipped in the puddle, but he was still laughed at by the other students.	He tried to act cool when he slipped in the puddle, but the other students still laughed at him.

2. Avoid dangling modifiers caused by the use of passive voice. A dangling modifier is a word or phrase that modifies a word not clearly stated in the sentence.

Dangling modifier with passive voice	Revised
To save time, the paper was written on a computer. (Who was saving time? The paper?)	To save time, Kristin wrote the paper on a computer.
Seeking to lay off workers without taking the blame, consultants were hired to break the bad news. Who was seeking to lay off workers? The consultants?)	Seeking to lay off workers without taking the blame, the CEO hired consultants to break the bad news.

3. Don't trust the grammar-checking programs in word-processing software. Many grammar checkers flag all passive constructions, but you may want to keep some that are flagged. Trust your judgment, or ask another human being（美国式的小幽默） for their opinion about which sentence sounds best.

Verbs- Voice and MoodActive and Passive voice:Verbs in the active voice show the subject acting. Verbs in the passive voice show something else acting on the subject. Most writers consider the active voice more forceful and tend to stay away from passives unless they really need them.

ACTIVE: Tim killed the chicken hawk.

PASSIVE: The chicken hawk was killed by Tim.

Indicative, Imperative, and Subjunctive Mood:Most verbs we use are in the indicative mood, which indicates a fact or opinion:

Examples:
·He was here.
·I am hungry.
·She will bring her books.

Some verbs are in the imperative mood, which expresses commands or requests. Though it is not stated, the understood subject of imperative sentences is you.

Examples:
·Be here at seven o'clock. (Understood: You be here at seven o'clock.)
·Cook me an omelette. (Understood: You cook me an omelette.)
·Bring your books with you. (Understood: You bring your books with you.)

When verbs show something contrary to fact, they are in the subjunctive mood.

When you express a wish or something that is not actually true, use the past tense or past perfect tense; when using the verb 'to be' in the subjunctive, always use were rather than was:



Examples:
·If he were here... (Implied: ...but he's not.)
·I wish I had something to eat. (Implied: ...but I don't.)
·It would be better if you had brought your books with you. (Implied: ...but you haven't brought them.)

INDICATIVE: I need some help.
IMPERATIVE:Help me!
SUBJUNCTIVE: If I were smart, I'd call for help.

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Apostrophe

This resource was written by Purdue OWL.
Last full revision by .
Last edited by Allen Brizee on May 20th 2009 at 10:26AM
Summary: This handout provides rules and examples for apostrophe usage.

The Apostrophe

The apostrophe has three uses:
1.to form possessives of nouns
2.to show the omission of letters
3.to indicate certain plurals of lowercase letters


Forming Possessives of Nouns

To see if you need to make a possessive, turn the phrase around and make it an "of the..." phrase. For example:
the boy's hat = the hat of the boy
three days' journey = journey of three days
If the noun after "of" is a building, an object, or a piece of furniture, then no apostrophe is needed!
room of the hotel = hotel room
door of the car = car door
leg of the table = table leg
Once you've determined whether you need to make a possessive, follow these rules to create one.



·add 's to the singular form of the word (even if it ends in -s):
the owner's car
James's hat (James' hat is also acceptable. For plural, proper nouns that are possessive, use an apostrophe after the 's': "The Eggles' presentation was good." The Eggles are a husband and wife consultant team.)

·add 's to the plural forms that do not end in -s:
the children's game
the geese's honking

·add ' to the end of plural nouns that end in -s:
houses' roofs
three friends' letters

·add 's to the end of compound words:
my brother-in-law's money

·add 's to the last noun to show joint possession of an object:
Todd and Anne's apartment

Showing omission of letters

Apostrophes are used in contractions. A contraction is a word (or set of numbers) in which one or more letters (or numbers) have been omitted. The apostrophe shows this omission. Contractions are common in speaking and in informal writing. To use an apostrophe to create a contraction, place an apostrophe where the omitted letter(s) would go. Here are some examples:
don't = do not
I'm = I am
he'll = he will
who's = who is
shouldn't = should not
didn't = did not
could've= could have (NOT "could of"!)
'60 = 1960


Forming plurals of lowercase letters

Apostrophes are used to form plurals of letters that appear in lowercase; here the rule appears to be more typographical than grammatical, e.g. "three ps" versus "three p's." To form the plural of a lowercase letter, place 's after the letter. There is no need for apostrophes indicating a plural on capitalized letters, numbers, and symbols (though keep in mind that some editors, teachers, and professors still prefer them). Here are some examples:

p's and q's = a phrase taken from the early days of the printing press when letters were set in presses backwards so they would appear on the printed page correctly. The expression was used commonly to mean, "Be careful, don't make a mistake." Today, the term also indicates maintaining politeness, possibly from "mind your pleases and thankyous."

Nita's mother constantly stressed minding one's p's and q's.
three Macintosh G4s = three of the Macintosh model G4
There are two G4s currently used in the writing classroom.
many & s = many ampersands
That printed page has too many & s on it.
the 1960s = the years in decade from 1960 to 1969
The 1960s were a time of great social unrest.


Don't use apostrophes for possessive pronouns or for noun plurals.

Apostrophes should not be used with possessive pronouns because possessive pronouns already show possession — they don't need an apostrophe. His, her, its, my, yours, ours are all possessive pronouns. Here are some examples:

wrong: his' book
correct: his book
wrong: The group made it's decision.
correct: The group made its decision.
(Note: Its and it's are not the same thing. It's is a contraction for "it is" and its is a possessive pronoun meaning "belonging to it." It's raining out= it is raining out. A simple way to remember this rule is the fact that you don't use an apostrophe for the possessive his or hers, so don't do it with its!)

wrong: a friend of yours'
correct: a friend of yours
wrong: She waited for three hours' to get her ticket.
correct: She waited for three hours to get her ticket.



Proofreading for apostrophes

A good time to proofread is when you have finished writing the paper. Try the following strategies to proofread for apostrophes:
·If you tend to leave out apostrophes, check every word that ends in -s or -es to see if it needs an apostrophe.
·If you put in too many apostrophes, check every apostrophe to see if you can justify it with a rule for using apostrophes.






Hyphens

This resource was written by Purdue OWL.
Last full revision by Sean M. Conrey.
Last edited by Karl Stolley on February 1st 2006 at 2:49PM
Summary: A comprehensive rundown on the proper use of the hyphen.

Hyphen Use

Two words brought together as a compound may be written separately, written as one word, or connected by hyphens. For example, three modern dictionaries all have the same listings for the following compounds:
hair stylist
hairsplitter
hair-raiser

Another modern dictionary, however, lists hairstylist, not hair stylist. Compounding is obviously in a state of flux, and authorities do not always agree in all cases, but the uses of the hyphen offered here are generally agreed upon.

1.Use a hyphen to join two or more words serving as a single adjective before a noun:
a one-way street
chocolate-covered peanuts
well-known author
However, when compound modifiers come after a noun, they are not hyphenated:
The peanuts were chocolate covered.
The author was well known.

2.Use a hyphen with compound numbers:
forty-six
sixty-three
Our much-loved teacher was sixty-three years old.

3.Use a hyphen to avoid confusion or an awkward combination of letters:
re-sign a petition (vs. resign from a job)
semi-independent (but semiconscious)
shell-like (but childlike)

4.Use a hyphen with the prefixes ex- (meaning former), self-, all-; with the suffix -elect; between a prefix and a capitalized word; and with figures or letters:
ex-husband
self-assured
mid-September
all-inclusive
mayor-elect
anti-American
T-shirt
pre-Civil War
mid-1980s

5.Use a hyphen to divide words at the end of a line if necessary, and make the break only between syllables:
pref-er-ence
sell-ing
in-di-vid-u-al-ist

6.For line breaks, divide already hyphenated words only at the hyphen:
mass-
produced
self-
conscious

7.For line breaks in words ending in -ing, if a single final consonant in the root word is doubled before the suffix, hyphenate between the consonants; otherwise, hyphenate at the suffix itself:
plan-ning
run-ning
driv-ing
call-ing

8.Never put the first or last letter of a word at the end or beginning of a line, and don't put two-letter suffixes at the beginning of a new line:
lovely (Do not separate to leave ly beginning a new line.)
eval-u-ate (Separate only on either side of the u; do not leave the initial e- at the end of a line.)

dingyi0311UID: 2627919

Parallel Structure

This resource was written by Purdue OWL.
Last full revision by .
Last edited by Dana Lynn Driscoll on October 15th 2006 at 10:45AM
Summary: This handout describes and provides examples of parallel structure (similar patterns of words).

Parallel Structure

Parallel structure means using the same pattern of words to show that two or more ideas have the same level of importance. This can happen at the word, phrase, or clause level. The usual way to join parallel structures is with the use of coordinating conjunctions such as "and" or "or."

Words and Phrases With the -ing form (gerund) of words:

Parallel: Mary likes hiking, swimming, and bicycling.

With infinitive phrases:

Parallel: Mary likes to hike, to swim, and to ride a bicycle.

OR Mary likes to hike, swim, and ride a bicycle.

(Note: You can use "to" before all the verbs in a sentence or only before the first one.)

Do not mix forms.

Example 1

Not Parallel:

Mary likes hiking, swimming, and to ride a bicycle.

Parallel:

Mary likes hiking, swimming, and riding a bicycle.

Example 2

Not Parallel:

The production manager was asked to write his report quickly, accurate ly, and in a detailed manner.

Parallel:

The production manager was asked to write his report quickly, accurately, and thoroughly.

Example 3

Not Parallel:

The teacher said that he was a poor student because he waited until the last minute to study for the exam, completed his lab problems in a careless manner, and his motivation was low.

Parallel:

The teacher said that he was a poor student because he waited until the last minute to study for the exam, completed his lab problems in a careless manner, and lacked motivation.

Clauses

A parallel structure that begins with clauses must keep on with clauses. Changing to another pattern or changing the voice of the verb (from active to passive or vice versa) will break the parallelism.

Example 1

Not Parallel:

The coach told the players that they should get a lot of sleep, that they should not eat too much, and to do some warm-up exercises before the game.

Parallel:

The coach told the players that they should get a lot of sleep, that they should not eat too much, and that they should do some warm-up exercises before the game.

— or —

Parallel:

The coach told the players that they should get a lot of sleep, not eat too much, and do some warm-up exercises before the game.

Example 2

Not Parallel:

The salesman expected that he would present his product at the meeting, that there would be time for him to show his slide presentation, and that questions would be asked by prospective buyers. (passive)

Parallel:

The salesman expected that he would present his product at the meeting, that there would be time for him to show his slide presentation, and that prospective buyers would ask him questions.

Lists After a Colon

Be sure to keep all the elements in a list in the same form.

Example 1

Not Parallel:

The dictionary can be used for these purposes: to find word meanings, pronunciations, correct spellings, and looking up irregular verbs.

Parallel:

The dictionary can be used for these purposes: to find word meanings, pronunciations, correct spellings, and irregular verbs.

Proofreading Strategies to Try:

·Skim your paper, pausing at the words "and" and "or." Check on each side of these words to see whether the items joined are parallel. If not, make them parallel.

·If you have several items in a list, put them in a column to see if they are parallel.

·Listen to the sound of the items in a list or the items being compared. Do you hear the same kinds of sounds? For example, is there a series of "-ing" words beginning each item? Or do your hear a rhythm being repeated? If something is breaking that rhythm or repetition of sound, check to see if it needs to be made parallel.


恩，主要是句子的结构词性时态要一致

dingyi0311UID: 2627919

明天不知道有没有作业呢，流感快好了，不能再拖了，加油了~

dingyi0311UID: 2627919

Commas: Quick Rules

The comma is a valuable, useful punctuation device because it separates the structural elements of sentences into manageable segments. The rules provided here are those found in traditional handbooks; however, in certain rhetorical contexts and for specific purposes, these rules may be broken.
The following is a short guide to get you started using commas. This resource also includes sections with more detailed rules and examples.

Quick Guide to Commas

1. Use commas to separate independent clauses when they are joined by any of these seven coordinating conjunctions: and, but, for, or, nor, so, yet.
2. Use commas after introductory a) clauses, b) phrases, or c) words that come before the main clause.
3. Use a pair of commas in the middle of a sentence to set off clauses, phrases, and words that are not essential to the meaning of the sentence. Use one comma before to indicate the beginning of the pause and one at the end to indicate the end of the pause.
4. Do not use commas to set off essential elements of the sentence, such as clauses beginning with that (relative clauses). That clauses after nouns are always essential. That clauses following a verb expressing mental action are always essential.
5. Use commas to separate three or more words, phrases, or clauses written in a series.
6. Use commas to separate two or more coordinate adjectives that describe the same noun. Be sure never to add an extra comma between the final adjective and the noun itself or to use commas with non-coordinate adjectives.
7. Use a comma near the end of a sentence to separate contrasted coordinate elements or to indicate a distinct pause or shift.
8. Use commas to set off phrases at the end of the sentence that refer back to the beginning or middle of the sentence. Such phrases are free modifiers that can be placed anywhere in the sentence without causing confusion.
9. Use commas to set off all geographical names, items in dates (except the month and day), addresses (except the street number and name), and titles in names.
10. Use a comma to shift between the main discourse and a quotation.
11. Use commas wherever necessary to prevent possible confusion or misreading.



Extended Rules for Using Commas

Extended Rules for Using Commas

Comma Use

1. Use commas to separate independent clauses when they are joined by any of these seven coordinating conjunctions: and, but, for, or, nor, so, yet.
The game was over, but the crowd refused to leave.
The student explained her question, yet the instructor still didn't seem to understand.
Yesterday was her brother's birthday, so she took him out to dinner.

2. Use commas after introductory a) clauses, b) phrases, or c) words that come before the main clause.
a. Common starter words for introductory clauses that should be followed by a comma include after, although, as, because, if, since, when, while.
While I was eating, the cat scratched at the door.
Because her alarm clock was broken, she was late for class.
If you are ill, you ought to see a doctor.
When the snow stops falling, we'll shovel the driveway.
However, don't put a comma after the main clause when a dependent (subordinate) clause follows it (except for cases of extreme contrast).
Incorrect: She was late for class, because her alarm clock was broken.
Incorrect: The cat scratched at the door, while I was eating.
Correct: She was still quite upset, although she had won the Oscar. (this comma use is correct because it is an example of extreme contrast)
b. Common introductory phrases that should be followed by a comma include participial and infinitive phrases, absolute phrases, nonessential appositive phrases, and long prepositional phrases (over four words).
Having finished the test, he left the room.
To get a seat, you'd better come early.
After the test but before lunch, I went jogging.
The sun radiating intense heat, we sought shelter in the cafe.
c. Common introductory words that should be followed by a comma include yes, however, well.
Well, perhaps he meant no harm.
Yes, the package should arrive tomorrow morning.
However, you may not be satisfied with the results.

3. Use a pair of commas in the middle of a sentence to set off clauses, phrases, and words that are not essential to the meaning of the sentence. Use one comma before to indicate the beginning of the pause and one at the end to indicate the end of the pause.
Here are some clues to help you decide whether the sentence element is essential:
·If you leave out the clause, phrase, or word, does the sentence still make sense?
·Does the clause, phrase, or word interrupt the flow of words in the original sentence?
·If you move the element to a different position in the sentence, does the sentence still make sense?
If you answer "yes" to one or more of these questions, then the element in question is nonessential and should be set off with commas. Here are some example sentences with nonessential elements:
Clause: That Tuesday, which happens to be my birthday, is the only day when I am available to meet.
Phrase: This restaurant has an exciting atmosphere. The food, on the other hand, is rather bland.
Word: I appreciate your hard work. In this case, however, you seem to have over-exerted yourself.

4. Do not use commas to set off essential elements of the sentence, such as clauses beginning with that (relative clauses). That clauses after nouns are always essential. That clauses following a verb expressing mental action are always essential.
That clauses after nouns:
The book that I borrowed from you is excellent.
The apples that fell out of the basket are bruised.
That clauses following a verb expressing mental action:
She believes that she will be able to earn an A.
He is dreaming that he can fly.
I contend that it was wrong to mislead her.
They wished that warm weather would finally arrive.
Examples of other essential elements (no commas):
Students who cheat only harm themselves.
The baby wearing a yellow jumpsuit is my niece.
The candidate who had the least money lost the election.
Examples of nonessential elements (set off by commas):
Fred, who often cheats, is just harming himself.
My niece, wearing a yellow jumpsuit, is playing in the living room.
The Green party candidate, who had the least money, lost the election.
Apples, which are my favorite fruit, are the main ingredient in this recipe.
Professor Benson, grinning from ear to ear, announced that the exam would be tomorrow.
Tom, the captain of the team, was injured in the game.
It is up to you, Jane, to finish.
She was, however, too tired to make the trip.
Two hundred dollars, I think, is sufficient.

5. Use commas to separate three or more words, phrases, or clauses written in a series.
The Constitution establishes the legislative, executive, and judicial branches of government.
The candidate promised to lower taxes, protect the environment, reduce crime, and end unemployment.
The prosecutor argued that the defendant, who was at the scene of the crime, who had a strong revenge motive, and who had access to the murder weapon, was guilty of homicide.

6. Use commas to separate two or more coordinate adjectives that describe the same noun. Be sure never to add an extra comma between the final adjective and the noun itself or to use commas with non-coordinate adjectives.
Coordinate adjectives are adjectives with equal ("co"-ordinate) status in describing the noun; neither adjective is subordinate to the other. You can decide if two adjectives in a row are coordinate by asking the following questions:
·Does the sentence make sense if the adjectives are written in reverse order?
·Does the sentence make sense if the adjectives are written with and between them?
If you answer yes to these questions, then the adjectives are coordinate and should be separated by a comma. Here are some examples of coordinate and non-coordinate adjectives:
He was a difficult, stubborn child. (coordinate)
They lived in a white frame house. (non-coordinate)
She often wore a gray wool shawl. (non-coordinate)
Your cousin has an easy, happy smile. (coordinate)
The 1) relentless, 2) powerful 3) summer sun beat down on them. (1-2 are coordinate; 2-3 are non-coordinate.)
The 1) relentless, 2) powerful, 3) oppressive sun beat down on them. (Both 1-2 and 2-3 are coordinate.)

7. Use a comma near the end of a sentence to separate contrasted coordinate elements or to indicate a distinct pause or shift.
He was merely ignorant, not stupid.
The chimpanzee seemed reflective, almost human.
You're one of the senator's close friends, aren't you?
The speaker seemed innocent, even gullible.

8. Use commas to set off phrases at the end of the sentence that refer back to the beginning or middle of the sentence. Such phrases are free modifiers that can be placed anywhere in the sentence without causing confusion. (If the placement of the modifier causes confusion, then it is not "free" and must remain "bound" to the word it modifies.)
Nancy waved enthusiastically at the docking ship, laughing joyously. (correct)
Incorrect:Lisa waved at Nancy, laughing joyously. (Who is laughing, Lisa or Nancy?)
Laughing joyously, Lisa waved at Nancy. (correct)
Lisa waved at Nancy, who was laughing joyously. (correct)

9. Use commas to set off all geographical names, items in dates (except the month and day), addresses (except the street number and name), and titles in names.
Birmingham,Alabama, gets its name from Birmingham, England.
July 22, 1959, was a momentous day in his life. Who lives at 1600 Pennsylvania Avenue, Washington, DC?
Rachel B. Lake, MD, will be the principal speaker.
(When you use just the month and the year, no comma is necessary after the month or year: "The average temperatures for July 1998 are the highest on record for that month.")

10. Use a comma to shift between the main discourse and a quotation.
John said without emotion, "I'll see you tomorrow."
"I was able," she answered, "to complete the assignment."
In 1848, Marx wrote, "Workers of the world, unite!"

11. Use commas wherever necessary to prevent possible confusion or misreading.
To George,Harrison had been a sort of idol.
Comma Abuse
Commas in the wrong places can break a sentence into illogical segments or confuse readers with unnecessary and unexpected pauses.

12. Don't use a comma to separate the subject from the verb.
Incorrect:An eighteen-year old in California, is now considered an adult.
Incorrect:The most important attribute of a ball player, is quick reflex actions.

13. Don't put a comma between the two verbs or verb phrases in a compound predicate.
Incorrect:We laid out our music and snacks, and began to study.
Incorrect:I turned the corner, and ran smack into a patrol car.

14. Don't put a comma between the two nouns, noun phrases, or noun clauses in a compound subject or compound object.
Incorrect (compound subject):The music teacher from your high school, and the football coach from mine are married.
Incorrect (compound object):Jeff told me that the job was still available, and that the manager wanted to interview me.

15. Don't put a comma after the main clause when a dependent (subordinate) clause follows it (except for cases of extreme contrast).
Incorrect (extreme contrast):She was late for class, because her alarm clock was broken. (incorrect)
Incorrect:The cat scratched at the door, while I was eating.
Incorrect:She was still quite upset, although she had won the Oscar.

Commas After Introductions

Commas After Introductions

Introductory Clauses

Introductory clauses are dependent clauses that provide background information or "set the stage" for the main part of the sentence, the independent clause. For example:
If they want to win, athletes must exercise every day. (introductory dependent clause, main clause)
Because he kept barking insistently, we threw the ball for Smokey. (introductory dependent clause, main clause)
Introductory clauses start with adverbs like after, although, as, because, before, if, since, though, until, when, etc.

Introductory Phrases

Introductory phrases also set the stage for the main action of the sentence, but they are not complete clauses. Phrases don't have both a subject and a verb that are separate from the subject and verb in the main clause of the sentence. Common introductory phrases include prepositional phrases, appositive phrases, participial phrases, infinitive phrases, and absolute phrases.
To stay in shape for competition, athletes must exercise every day. (introductory infinitive phrase, main clause)
Barking insistently, Smokey got us to throw his ball for him. (introductory participial phrase, main clause)
A popular and well respected mayor, Bailey was the clear favorite in the campaign for governor. (introductory appositive phrase, main clause)
The wind blowing violently, the townspeople began to seek shelter. (introductory absolute phrase, main clause)
After the adjustment for inflation, real wages have decreased while corporate profits have grown. (introductory prepositional phrases, main clause)

Introductory Words

Introductory words like however, still, furthermore, and meanwhile create continuity from one sentence to the next.
The coaches reviewed the game strategy. Meanwhile, the athletes trained on the Nautilus equipment.
Most of the evidence seemed convincing. Still, the credibility of some witnesses was in question.

When to Use a Comma

Introductory elements often require a comma, but not always. Use a comma in the following cases:
·After an introductory clause. (Does the introductory element have a subject and verb of its own?)
·After a long introductory prepositional phrase or more than one introductory prepositional phrase. (Are there more than five words before the main clause?)
·After introductory verbal phrases, some appositive phrases, or absolute phrases.
·If there is a distinct pause. (When you read the sentence aloud, do you find your voice pausing a moment after the introductory element?) to avoid confusion. (Might a reader have to read the sentence more than once to make sense of it?)

When not to Use a Comma

Some introductory elements don't require a comma, and sometimes the subject of a sentence looks like an introductory element but isn't. Do not use a comma in the following cases:
·After a brief prepositional phrase. (Is it a single phrase of less than five words?)
·After a restrictive (essential) appositive phrase. (See our document on appositives.)
·To separate the subject from the predicate. (See below.)
Each of the following sentences may look like it requires a comma after the opening segment (marked with an x), but the opening segment is really the subject. It's sometimes easy to confuse gerund- or infinitive-phrase subjects like the following with nonessential introductory phrases, so be careful.
Preparing and submitting his report to the committee for evaluation and possible publication[x] was one of the most difficult tasks Bill had ever attempted.
To start a new business without doing market research and long-term planning in advance[x] would be foolish.
Extracting the most profit for the least expenditure on labor and materials[x] is the primary goal of a capitalist.

Commas vs. Semicolons in Compound Sentences

A group of words containing a subject and a verb and expressing a complete thought is called a sentence or an independent clause. Sometimes, an independent clause stands alone as a sentence, and sometimes two independent clauses are linked together into what is called a compound sentence. Depending on the circumstances, one of two different punctuation marks can be used between the independent clauses in a compound sentence: a comma or a semicolon. The choice is yours.

Comma (,)

Use a comma after the first independent clause when you link two independent clauses with one of the following coordinating conjunctions: and, but, for, or, nor, so, yet. For example:
I am going home, and I intend to stay there.
It rained heavily during the afternoon, but we managed to have our picnic anyway.
They couldn't make it to the summit and back before dark, so they decided to camp for the night.

Semicolon (;)

Use a semicolon when you link two independent clauses with no connecting words. For example:
I am going home; I intend to stay there.
It rained heavily during the afternoon; we managed to have our picnic anyway.
They couldn't make it to the summit and back before dark; they decided to camp for the night.
You can also use a semicolon when you join two independent clauses together with one of the following conjunctive adverbs (adverbs that join independent clauses): however, moreover, therefore, consequently, otherwise, nevertheless, thus, etc. For example:

I am going home; moreover, I intend to stay there.
It rained heavily during the afternoon; however, we managed to have our picnic anyway.
They couldn't make it to the summit and back before dark; therefore, they decided to camp for the night.
For more information about compound sentence patterns, see the Purdue OWL handout on Sentence Punctuation Patterns.