Contrary to popular belief, commas don't just signify pauses in a sentence.
In fact, precise rules govern when to use this punctuation mark. When followed, they lay the groundwork for clear written communication.
We've compiled a list of all the times when you'll need the mighty comma — and we wrote sentences about ducks to show you their proper use:
Image: Your professor for comma class. Juliana Kaplan/Business Insider
