|How to use the joining comma. The joining comma joins two complete sentences to form one sentence. The joining comma must be followed with a connecting word such as and, but, or, nor, so, yet and while. Sentence examples for the joining comma:
I have finished all of my homework, but she is still working on hers.
Jane must file her tax report by today, or she will pay a penalty.
Time flies when we are having fun, and we are always having fun.
Yesterday was her mom?s birthday, so she baked her a cake.
Always use the connecting word to join two complete sentences to avoid a comma splice:
I have finished all of my homework, she is still
working on hers.