Comma Rule #1

The most important thing to remember about a comma is that it doesn’t connect or join. Instead, use the comma to separate ideas. Some students imagine the sentence in their head, and wherever they pause to breather, they insert a comma into their writing. This is surprisingly easy, and it is correct most of the time!

The most common comma problem, the comma fault, causes run-on sentences. Here’s an example:

  • I like pizza, it is delicious.

Notice that the author is trying to connect two sentences with a comma. This is a comma fault. Most comma faults can be corrected by adding a conjunction:

  • I like pizza, because it is delicious.

They can also usually be corrected by replacing the comma with a period:

  • I like pizza. It is delicious.

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