A preposition is a small word that shows how other words in a sentence are linked. It often shows direction, place, time, or other links like with, for, about.
A preposition is usually followed by a noun or a pronoun (me, it, them): to the station, with her.
There is no rule in modern English that says a sentence cannot end with a preposition. This is an old myth. Ending with a preposition often sounds more natural and less formal.
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