This document provides information about prepositions in three sections. It begins with an introduction that defines prepositions as parts of speech that show relationships between two things using examples of location, timing, and direction. The second section lists common prepositions. The third section explains prepositional phrases as phrases that start with a preposition and end with the object of the preposition, which must be a noun or pronoun. The document contains examples and tests to help readers identify prepositions and prepositional phrases.