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本帖最后由 ieyangj08 于 2010-1-19 09:29 编辑
Independent and Dependent Clauses
Dependent Marker Word
A dependent marker word is a word added to the beginning of an independent clause that makes it into a dependent clause.
When Jim studied in the Sweet Shop for his chemistry quiz, it was very noisy.
Some common dependent markers are: after, although, as, as if, because, before, even if, even though, if, in order to, since, though, unless, until, whatever, when, whenever, whether, and while.
Connecting dependent and independent clauses
1. Coordinating Conjunction
and, but, for, or, nor, so, and yet. When the second independent clause in a sentence begins with a coordinating conjunction, a comma is needed before the coordinating conjunction:
Jim studied in the Sweet Shop for his chemistry quiz, but it was hard to concentrate because of the noise.
2. Independent Marker Word
An independent marker word is a connecting word used at the beginning of an independent clause. These words can always begin a sentence that can stand alone. When the second independent clause in a sentence has an independent marker word, a semicolon is needed before the independent marker word.
Jim studied in the Sweet Shop for his chemistry quiz; however, it was hard to concentrate because of the noise.
also, consequently, furthermore, however, moreover, nevertheless, and therefore.
Some Common Errors to Avoid
1 Comma Splices
Incorrect: I like this class, it is very interesting.
·Correct: I like this class. It is very interesting.
·(or) I like this class; it is very interesting. 学习
·(or) I like this class, and it is very interesting.
·(or) I like this class because it is very interesting. 学习
·(or) Because it is very interesting, I like this class. 学习
2 Fused Sentences
Fused sentences happen when there are two independent clauses not separated by any form of punctuation. This error is also known as a run-on sentence. The error can sometimes be corrected by adding a period, semicolon, or colon to separate the two sentences.
Incorrect: My professor is intelligent I've learned a lot from her.
·Correct: My professor is intelligent. I've learned a lot from her.
·(or) My professor is intelligent; I've learned a lot from her. 学习
·(or) My professor is intelligent, and I've learned a lot from her.
·(or) My professor is intelligent; moreover, I've learned a lot from her. 学习
3 Sentence Fragments
Sentence fragments happen by treating a dependent clause or other incomplete thought as a complete sentence. You can usually fix this error by combining it with another sentence to make a complete thought or by removing the dependent marker.
Incorrect: Because I forgot the exam was today.
·Correct: Because I forgot the exam was today, I didn't study.
·(or) I forgot the exam was today.
Run-ons - Comma Splices - Fused Sentences
·Run-ons, comma splices, and fused sentences are all names given to compound sentences that are not punctuated correctly. The best way to avoid such errors is to punctuate compound sentences correctly by using one or the other of these rules.
·1. Join the two independent clauses with one of the coordinating conjunctions (and, but, for, or, nor, so, yet), and use a comma before the connecting word.
·_________________________, and _________________________.
·He enjoys walking through the country, and he often goes backpacking on his vacations.
·2. When you do not have a connecting word (or when you use a connecting word other than and, but, for, or nor, so, or yet between the two independent clauses) use a semicolon (;). |
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