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Caution—Commas Ahead

The primary purpose of the comma is to clarify grammatical structures and sentence rhythms for the reader. Commas define, support, and reinforce various grammatical structures and units within simple sentences. In addition, commas are used in more complicated sentence structures that employ coordination and subordination.

Let’s find out whether you can put your comma knowledge to work. Try out your skills on Caution-Commas Ahead.

Directions: Click on The unedited sentence, please! A sentence will appear in the text box. Insert any necessary commas. When you have completed your edit, click on The final version, please!