This document defines and provides examples of different types of prepositions in English. It begins by defining prepositions as words that link nouns, pronouns, and phrases to other words and describe relationships between words. It then discusses four main types of prepositions - simple prepositions, compound prepositions, phrase prepositions, and participle prepositions - providing examples of each. The document concludes by listing and giving examples of different relationships expressed by prepositions, such as place, time, agency, manner, and others.