Commas! What are the rules?
Rule #1 Commas must be used to separate three or more items in a series. A Comma before the word “and” and at the end of the list is optional. Ex. Her room was cluttered with books, clothes, shoes and magazines.
Rule #2 Commas are used after an introductory element. You will hear a pause after the introductory words. Ex. After studying for the exam, Joe ate his dinner. When I didn’t get my raise, I called my boss.
Rule #3 Commas are used to set off transitional words or expressions Ex. Nobody, for example, did his or her homework last night. She will, nevertheless, finish her homework tonight.
Rule #4 Commas are used before and after words that may interrupt the flow of thought. Ex. Sam, our new friend, is a chef at a family restaurant.
Rule #5 Use commas in addresses and dates Ex. He lives at 125 Main Street, Toronto, Ontario. Ex. The party on Tuesday, January 12th, 2009, was fantastic.
Rule #6 Use commas when writing a letter Ex. Yours truly, Dear Betty,
Rule #7 Use commas with direct quotations. Ex. John said to Lizzy, “I cannot move to Maine.”
Rule #8 Use a comma when you are addressing a person to set off a name. Ex. John, you are late again. You, Mr. Greene, will be our guest speaker.
Rule #9 Use commas after interjections. Ex. Oh, he forgot to lock the door again.
Rule #10 Use a comma to join two independent clauses. Ex. She went to the store, and he went to the library.
Works Cited Professor Ruth Hannah George Brown College