Commas are notoriously tricky punctuation marks, and with good reason. So how can you know if you're using them correctly? It comes down to one question: Is it essential?
Let's say that you're traveling to a country where you don't speak the language. You didn't have time to pick up a dictionary, so you'll have to get around using only hand gestures. The problem? Every hand gesture you do offends someone. What gives? See more »