The document discusses the passive voice in English. It provides examples of active and passive voice constructions and their corresponding tense/time references. It then provides a practice section where the reader is asked to rewrite example sentences in the passive voice. Key points made include that the passive voice is used when the subject is less important than the object or doer of the action, and that it is formed by using some form of "to be" plus the past participle of the main verb.