This document discusses phrasal verbs in English. It defines phrasal verbs as verbal structures consisting of an auxiliary verb and a main verb. Some common auxiliary verbs used in phrasal verbs are be, have, can, may, must and do. The document provides examples of how phrasal verbs are used to form verb tenses like the future and perfect tenses. It also gives examples of common phrasal verbs like "take off", "get along", "look up", "make up", and "turn up".