Page 593 - Wordsmith A Guide to College Writing

How else would you say, “Will you pick me up?” or “I feel
left out”? People who object to prepositions at the end of

sentences are often really objecting to awkward or

redundant constructions. The sentence “Where are you

at?” will bring a scowl to any English teacher’s face—not

because it ends with a preposition, but because it is

redundant: “where” and “at” are both doing the same job
—indicating location.

But by all means, say “I have nothing to put this in” or

“The dog wants to go out.” Except in the most formal

writing, ending sentences with prepositions is something

almost everyone can live with.