Are You Appositive About That?

dreamstime_14649214One of the trickier tricks with commas is figuring out how to use them around appositives. An appositive is a noun or a noun phrase in apposition (used to describe) another noun. Um…what? Here’s an example:

Professor Katydid, award-winning entomologist, will be lecturing tonight on the mating habits of Madagascar hissing cockroaches. Continue reading