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Comma Rule #1
Use a comma and a coordinating conjunction (and, but, or nor, for, yet) to join two
Comma Rule #2
Use a single comma to indicate that a word or words have been omitted, or to avoid a possible
When using words well, yes, no, or why at the beginning of a sentence, you use
only the second half of the pair of commas.
Use a pair of commas to set off parenthetical expressions such as
of course, in fact, as a matter of fact, on the other hand, in my opinion, and in reality.
Comma Rule #4
Do not use a comma after an introductory adverb phrase that comes immediately before the
verb it modifies.
Sometimes good writers will omit the comma after a short introductory phrase if there is no possibility of
a misreading, but in this class (GC) you should follow the comma rule #4.
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