The document discusses the passive voice, including its form, examples of its use in different tenses, and how it differs from the active voice. Specifically, the passive voice is used to emphasize the subject of the sentence rather than the actor. It is formed by using a form of the verb "to be" along with the past participle of the main verb. The active voice stresses who performs the action, while the passive voice focuses on what is acted upon. Five examples are given to demonstrate transforming sentences from the active to the passive voice.