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本帖最后由 cjlu 于 2009-6-6 23:16 编辑
副词性从句(即状语从句)
时间状语从句引导时间状语从句的从属连词和词组有:
1)when, whenever, while, as, after, before, since, till, until, once等。
We have learnt quite a lot about it since we came here.
2)as soon as, hardly(scarcely)...when, no sooner...than, each(every) time, the moment, immediately(that)等。
As soon as I sent an e-mail message, I received positive responses.
The moment he heard the good news, he jumped with joy.
地点状语从句引导地点状语从句的连词是where, wherever.
Wherever she went, she took her little daughter with her.
Where I live there are plenty of trees. 我住的地方树很多。
Wherever I am I will be thinking of you. 不管我在哪里我都会想到你。
原因状语从句引导原因状语从句的从属连词有:because, as, since, now(that),seeing that, considering that, in that等。
Considering that he is a freshman, we must say he is doing well.
比较:because, since, as和for
1) because语势最强,用来说明人所不知的原因,回答why提出的问题。当原因是显而易见的或已为人们所知,就用as或 since。
I didn't go, because I was afraid.
Since /As the weather is so bad, we have to delay our journey.
2) 由because引导的从句如果放在句末,且前面有逗号,则可以用for来代替。但如果不是说明直接原因,而是多种情况加以推断,就只能用for。
He is absent today, because / for he is ill.
He must be ill, for he is absent today.
结果状语从句引导结果状语从句的连词有:so...that, such...that, so that, that, so等。
Mickey Mouse is so attractive that the children are reluctant to leave.
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 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。
The boy is so young that he can't go to school.
He is such a young boy that he can't go to school
目的状语从句
引导目的状语从句的连词有:so that, in order that, for fear that, lest等,从句常使用may, might, can, could, would等情态动词。
We got up early this morning so that we could catch the first bus to the railway station.
例如:
You must speak louder so that /in order that you can be heard by all.
He wrote the name down for fear that(lest) he should forget it.
Better take more clothes in case the weather is cold.
条件状语从句
引导条件状语从句的连词和词组有if,unless,as(so) long as,on condition that,in case,provided(providing) that,supposing等。
As long as you have the right equipment,you can use a telephone line to transmit computer data.
if 引导的条件句有真实条件句和非真实条件句两种。非真实条件句已在虚拟语气中阐述。
unless = if not.
Let's go out for a walk unless you are too tired.
If you are not too tied, let's go out for a walk.
典型例题
You will be late ___ you leave immediately.
A. unless B. until C. if D. or
答案A。
句意:除非你立即走,否则你就回迟到的。可转化为 If you dong leave immediately, you will be late. B、D句意不对,or表转折,句子如为 You leave immediately or you will be late.
让步状语从句引导让步状语从句的连词和词组有though, although, whether, even though, even if, no matter what(when, how...),whatever(whenever, wherever, however....)等。though, even if等引导状语从句可转换成含有as的部分倒装结构,具有强调意义。其结构为“形容词(副词、动词、名词)+as+主语+谓语”。
No matter what you may say,I would not change my mind.
Young as he is,he is quite experienced in this work.(=though he is young)
Child as he is,he can speak English fluently.(=though he is a child)
1)though, although
注意:
当有though, although时,后面的从句不能有but,但是 though 和yet可连用
Although it's raining, they are still working in the field.
虽然在下雨,但他们仍在地里干活。
He is very old, but he still works very hard.
虽然他很老,但仍然努力地工作。
Though the sore be healed, yet a scar may remain.
伤口虽愈合,但伤疤留下了。
(谚语)
典型例题
___she is young, she knows quite a lot.
A. When B. However C. Although D. Unless
答案:C。意为虽然她很年轻,却知道许多。
2) as, though 引导的倒装句
as / though引导的让步从句必须表语或状语提前(形容词、副词、分词、实义动词提前)。
Child as /though he was, he knew what was the right thing to do.
= Though he was a small child, he knew what was the right thing to do.
注意: a. 句首名词不能带任何冠词。
b. 句首是实义动词,其他助动词放在主语后。如果实义动词有宾语和状语,随实义动词一起放在主语之前。
Try hard as he will, he never seems able to do the work satisfactorily.
= Though he tries hard, he never seems…
虽然他尽了努力,但他的工作总做的不尽人意。
3) even if, even though. 即使
We'll make a trip even though the weather is bad.
4) whether…or- 不管……都
Whether you believe it or not, it is true.
5) "no matter +疑问词" 或"疑问词+后缀ever"
No matter what happened, he would not mind.
Whatever happened, he would not mind.
替换:no matter what = whatever
no matter who = whoever
no matter when = whenever
no matter where = wherever
no matter which = whichever
no matter how = however
注意:no matter 不能引导主语从句和宾语从句。
(错)No matter what you say is of no use now.
(对)Whatever you say is of no use now.
你现在说什么也没用了。(Whatever you say是主语从句)
(错)Prisoners have to eat no matter what they're given,
(对)Prisoners have to eat whatever they're given. 囚犯们只能给什么吃什么。方式状语 |
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