This document provides steps for changing verbs from active to passive voice according to tense. It explains that the object of the active sentence becomes the subject of the passive sentence. There are three main steps: 1) Put the object first, 2) Change the main verb according to tense (past simple, past continuous, past perfect), 3) Change the verbs in examples provided to passive voice. Examples are given for each tense and case of the object to demonstrate the rules for transforming between active and passive voice.