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Commas. The Serial Comma. Commas are used to separate items in a series. When Mary walked into the classroom, she saw a school teacher, a doctor, a woman eating a bagel, and a bird .
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The Serial Comma • Commas are used to separate items in a series. • When Mary walked into the classroom, she saw a school teacher, a doctor, a woman eating a bagel, and a bird. • A comma is needed after the phrase “a woman eating a bagel.” As the sentence stands, you might get the impression that the woman was eating the bird as well.
The Serial Comma • In some writing, it is acceptable to omit the comma before the “and” in a series of three or more items. • However, the ACT test writers prefer a more formal version of English (no surprise there), so use a comma to separate every item in a series, including the last one.
Separating Clauses and Phrases • The ACT also tests your ability to use commas correctly when two clauses, or a clause and a phrase, appear in the same sentence.
Two Independent Clauses • Identify the two independent clauses in the following sentence: • Mary wondered why there was a bird in the classroom and she decided to ask the teacher what the bird was doing indoors. • A comma belongs before the conjunction that joins the two independent clauses. • Mary wondered why there was a bird in the classroom, and she decided to ask the teacher what the bird was doing indoors.
An Independent Clause and a Dependent Clause • Commas are used to separate independent clauses from dependent clauses. • Before Mary could reach the teacher she saw the woman offer the bird part of the bagel. • “Before Mary could reach the teacher,” is a dependent clause so it must be separated from the independent clause with a comma. • Before Mary could reach the teacher, she saw the woman offer the bird part of the bagel.
An Independent Clause and a Modifying Phrase • Commas are used to separate independent clauses from modifying phrases. • Hungry and excited the bird snapped up the bagel. • “Hungry and excited” is a modifying phrase and must be separated from the independent clause by a comma. • Hungry and excited, the bird snapped up the bagel.
Restrictive and Non-restrictive Elements • A restrictive clause or phrase is essential to the meaning of a sentence, and it should not be separated by a comma. • People who snore are advised to sleep on their sides. • “Who snore” is essential to the meaning of this sentence. The sentence is not saying that all people should sleep on their sides, just ones who snore.
Restrictive and Non-restrictive Elements • A non-restrictive clause or phrase is not essential to the meaning of the sentence. It merely adds a parenthetical thought, and therefore, it needs to be separated from the rest of the sentence by commas. • My father, who snores loudly, always sleeps in his long johns.
Work Cited • Martz, Geoff, Kim Magloire, and Theodore Silver. Cracking the ACT. 2007 ed. New York: Random House, 2007. Print.