Rules for Comma Usage. Use a comma to separate the elements in a series (three or more things), including the last two.
"He hit the ball, dropped the bat, and ran to first base. " You may have learned that the comma before the "and" is unnecessary, which is fine if you're in control of things. Grammar Bytes! Grammar Instruction with Attitude. Grammar Bytes! Grammar Instruction with Attitude.
Grammar Bytes! Presents. GrammarBytes's channel. Discourse Markers. In your writing, you will want to spend some time ensuring that your work has a sense of variety.
In order to do this, you might think of the following : Use conjunctions as well as/instead of sentence connectors. A conjunction is a word like and, but, etc, which is used to join two ideas together into a complex sentence. Unlike sentence connectors such as 'However', etc, a conjunction cannot be used at the beginning of a sentence and must come at a mid-point, at the end of one clause and the beginning of another.
It is usually possible to rephrase a pair of sentences that use a sentence connector by using a conjunction instead.