The document discusses the passive voice in English. It notes that the passive voice emphasizes the action rather than the subject performing the action. It provides examples of passive voice constructions and their active voice equivalents in different tenses. It also explains how to rewrite sentences from active to passive voice by making the direct object of the active sentence the subject of the passive sentence and using the appropriate form of "to be" along with the past participle of the main verb. It notes some rules about when the agent is omitted from passive voice sentences.