This document discusses different types of prepositions in English. It defines prepositions as words used before nouns to indicate direction, time, place, or other relationships. It then describes five specific types of prepositions - prepositions of place, which refer to where something is located; prepositions of time, which refer to when something occurs; prepositions of direction, which indicate location between two nouns; prepositions of spatial relationships, which deal with where an action is taking place; and prepositional phrases, which are groups of words consisting of a preposition and its object. Examples are provided for each type of preposition.