The document provides instruction on forming sentences in the passive voice. It discusses:
1. The passive voice focuses on the action rather than the actor/subject. It is formed using a form of "to be" plus the past participle of the main verb.
2. The document explains the purposes of using the passive voice, including to avoid mentioning the actor, to emphasize the actor, and that it is commonly used in formal writing.
3. Formation of the passive voice is demonstrated for different tenses including present, past, present perfect, present progressive, past progressive, and future. Examples are provided and the reader is given practice exercises to form passive sentences.