Words that express (temporal, special or otherwise) between a noun or a pronoun and another element in the phrase.
Tells us when or something is in relation to something else
o The man on the platform
o He arrived after dinner
- Time prepositions: before, after, during, at, by, for, since
- Place prepositions: under, over, on, off, though, down, around
- Sometime preposition are two or three words long: Owning to, because of, in spite of, with reference to, in accordance to, except for,