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0910AW SPECTACULAR 之【SU & SY SO】第十七期——Commas
Commas: Quick Rules
The rules provided here are those found in traditional handbooks; however, in certain rhetorical contexts and for specific purposes, these rules may be broken.
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. 以前以为可分可不分,不过分开显然要清晰一些
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.语气作用,插入语。
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.尤其要注意!逗号和插入语的插入让语气变得和缓、意思略有停顿,这样子是不利于强调的。特别是我喜欢用插入语……要控制自己!
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.多个形容词修饰同一个名词的时候,在最后一个形容词之后不能够用逗号将其与名词分开
7. Use a comma near the end of a sentence to separate contrasted coordinate elements or to indicate a distinct pause or shift.这一点暂时想不到例子……
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.
11. Use commas wherever necessary to prevent possible confusion or misreading.
Extended Rules for Using Commas
Comma Use
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.
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.在非独立的定语前面不能用逗号,即,逗号前后都是完整的句子结构,而且要记得加连接词~这里的非独立的定语,应该是说从结构上和意思上都与主句不能分开的。
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.true也是。
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.就是说用逗号把不重要的成分单独分割开来,要删也可以删。
4. 前文关于不能分开重要成分的原则的举例。
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.
Examples of other essential elements (no commas):
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):
My niece, wearing a yellow jumpsuit, is playing in the living room.
The Green party candidate, who had the least money, lost the election.
Professor Benson, grinning from ear to ear, announced that the exam would be tomorrow.
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.并列的形容词
确定形容词是否并列:看能否调整顺序、能否在期间+and。能,则是并列的。这用于确定系列非并列的形容词尤其有用啊~!
Here are some examples of coordinate and non-coordinate adjectives:
They lived in a white frame house. (non-coordinate)
She often wore a gray wool shawl. (non-coordinate)
The 1) relentless, 2) powerful 3) summer sun beat down on them. (1-2 are coordinate; 2-3 are non-coordinate.)
7. Use a comma near the end of a sentence to separate contrasted coordinate elements or to indicate a distinct pause or shift.嗯,上面那个想不到例子的找到例子了
He was merely ignorant, not stupid.
The chimpanzee seemed reflective, almost human.貌似也不完全是相反的,也有些递进的意味,对照嘛
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. (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.")
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.主语不应与动词分开,这一个错误比较容易犯,尤其是当主语很长时可能觉得语气应该停顿,但不能在写法结构上分开!
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.复合谓语中几个动词不能用逗号分开
Incorrect:We laid out our music and snacks, and began to study.这个可以跟逗号的另一个用法一起记,逗号前后的句子都是有完整结构的。
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.总结曰,同样语法功能的部分不能分开。
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.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.
Introductory Words
Introductory words like however, still, furthermore, and meanwhile create continuity from one sentence to the next.
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口语词,参见前文提到的yes,well等, 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?) 语气问题,传意问题
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. 此处容易犯错的主要原因是有时候主语实在太长,但无论多长,主语都不能跟谓语分开!
Commas vs. Semicolons分号 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.
有连词,就用逗号。
没连词,就用分号。或者以下连接副词也可以用分号:however, moreover, therefore, consequently, otherwise, nevertheless, thus, etc.
They couldn't make it to the summit and back before dark; therefore, they decided to camp for the night.
Commas with Nonessential Elements
即是前文提到过的把不重要的成分框起来。
小结一下。
该节的注意点:逗号的结构功能(不能分割主谓、不能分割非限定性从句、不能分割一起构成同一语法功能的成分);逗号的传意功能(引入成分太长可以加逗号,容易引起混淆时加逗号,语气自然停顿处加逗号)。
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