A preposition is a word governing, and usually preceding, a noun or pronoun and expressing a relation to another word or element in the clause.
There is a man on the platform.
She arrived after lunch.
What did you do it for?
A preposition is a word governing, and usually preceding, a noun or pronoun and expressing a relation to another word or element in the clause.
There is a man on the platform.
She arrived after lunch.
What did you do it for?