The document compares sentences written in the active and passive voice. In the active voice, the subject performs the action of the verb. In the passive voice, the subject receives the action. Some examples provided are "He takes exercise daily" in the active compared to "Exercise is taken by me daily" in the passive. Another example is "The police arrested the thief" active versus "The thief was arrested by the police" passive. A total of 15 sentences are given in each voice for comparison.