The document discusses the passive voice in English. The passive voice uses a form of the verb "to be" plus the past participle of the main verb. It is used when the active object becomes the passive subject. The passive voice is often used when the actor performing the action is unknown or unimportant. Some examples are provided such as "My bike has been stolen" and "Death in Venice was directed by Visconti." The passive voice is commonly used in English writing.