This document provides information about passive voice, including:
[1] It discusses simple, progressive, and perfect tenses in both active and passive voice, providing examples of how to change sentences between the two voices.
[2] Exercises are included to have the reader identify the tense of sentences and change them to passive voice.
[3] Passive voice with modal verbs like can, should, must is also covered with examples.
[4] The document concludes with a passive voice exercise asking the reader to change sample sentences into passive voice.