Unit7 Grammar 1Unit7 Grammar 1princessprincessHi, Hi, EveryoneEveryone!!We call the We call the princess Laura.princess Laura.The princess The princess is is calledcalled Laura. Laura.Active voiceActive voicePassive voicePassive voice1.1. The lights were turned off by Tom.The lights were turned off by Tom.2.2. The windows are cleaned every week.The windows are cleaned every week.3.3. Millie’s closed the door.Millie’s closed the door.4.4. The TV was turned on. The TV was turned on. 5.5. The boy made a model plane. The boy made a model plane. 6.6. A total(A total( 总数总数 ) of 8 questions are answered.) of 8 questions are answered.ororActiveActivePassivePassivePassivePassivePassivePassivePassivePassivePassivePassiveActiveActiveActiveActivePassivePassivePassivePassiveActiveActiveActiveActivePassivePassivePassivePassive1.1. The lights The lights were turnedwere turned off off by Tom. by Tom.2.2. The windows The windows are cleanedare cleaned every week. every week.3.3. The TV The TV was turnedwas turned on. on. 4.4. A total(A total( 总数总数 ) of 8 questions ) of 8 questions are answeredare answered..How to form the passive How to form the passive voice?voice?Be is, am, areis, am, arewas, werewas, were + + donedoneSimple present tenseSimple present tenseSimple past tenseSimple past tenseWhen to use the When to use the passive voice?passive voice?★It is obvious( 显然 ) who performs the action.★We do not know or do not want to know who performs the action.★We think the action is more important than the person who performs the action.Word Word processing is taught in our computer is taught in our computer lessons.lessons.The printer was sold already.The printer was sold already.Educational CD-ROMs are sold in many countries....
