Grammar Trap: Whose vs. Who's

People confuse these two words when writing because they sound the same when speaking--and, as always, that's confusing.

"Whose" is really the possessive form of "who."

Examples: Whose umbrella should I borrow today? I can't remember whose umbrella this is.

"Who's" is the contraction of "who is" or "who has."

Examples: Who's knocking at my door? I don't know who's been knocking at my door in the middle of the night.

Do you have a grammar (or usage) trap you’d like to see discussed? Do you have a tip that will help the rest of us avoid one? If so, please let me know.


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