|Commas with Enumerations or Series|
Use a comma to separate items in an enumeration.
Mr. Mac had a cat, a dog, a cow, and a pony.
The comma before 'and' is optional.
Don't use a comma before and if two items are a unit (Ham and eggs as a dish is a unit and should therefore not be separated by a comma.)
Don't use a comma if all items in an enumeration are separated by and, or, nor etc.
Commas between Main Clauses
Use a comma to separate parts of a sentences in a sequence.
Don't use a comma if these parts of the sentence are separated by and or but.
Note: Don't use a comma, but a semi colon, if two main clauses are not separated by and or but.
Commas with Conditional Sentences
Donít use a comma if the if clause is at the end of the sentence.
Directions: Find if the sentence in each question is punctuated correctly. Correct any punctuation errors and rewrite all the sentences on a sheet of paper. Write your own examples for the comma usage rules described above. As a homework, read a book and find examples of comma usage with series, main clause, and conditional sentences.