A phrasal verb is a verb combined with a preposition or adverb that modifies the verb's meaning. There are three types of phrasal verbs: intransitive verbs which don't take an object, inseparable verbs where the object must follow the particle, and separable verbs where the object can either precede or follow the particle. The document then provides a list of over 200 common phrasal verbs with their meanings and examples to illustrate proper usage. It emphasizes the importance of learning both the meanings and grammatical rules for using phrasal verbs correctly in English.