There are actually some pretty clear-cut rules regarding commas, and while some rules seem to be clearer than others, at least in terms of how much most people understand, there are some basic comma rules that can help you know when and when not to use a comma.
Tips from the ProfessorStudents often struggle with commas when it comes to using them correctly with the coordinating conjunctions – and, but, or, for, nor, so, and yet.
The important thing to remember is that you have to keep in mind what else is around that conjunction. You can't assume that every time you use and you'll need a comma. Sometimes, you will, and, sometimes, you won't.
In this interactive video, the Grammar Professor will explain more about why you have to think about what surrounds your coordinating conjunction before you can decide whether or not you need that comma.
Find the missing commas in the following activities.
Source: Excelsior Online Writing Lab, https://owl.excelsior.edu/grammar-essentials/punctuation/commas/commas-tips-from-the-professor/;
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