The document provides a lesson on the passive voice in English grammar. It begins by defining key terms like active voice, passive voice, subject, and object. Examples are given to illustrate the difference between active and passive sentences. The purpose of the passive voice is explained as focusing on the action rather than the actor, or to avoid stating who performed the action. Different tenses that can be used with the passive voice, like simple present and simple past, are demonstrated. The lesson concludes with exercises for learners to practice transforming sentences between active and passive voice in different tenses.