人教版（2019）必修第二册Unit 2 Wildlife Protection Discovering Useful Structures（被动语态）课件(15张ppt)

1、被动语态被动语态Everybody, everybody wants to love.Everybody, everybody wants to be loved.被动语态目录Content01.01.01.01.03.02.被动语态含义被动语态的句子种类被动语态的注意事项被动语态结构实战演练被动语态时态被动语态的句子种类被动语态的注意事项被动语态英语动词有两种语态：主动语态the active voice被动语态the passive voice主动语态表示主语是动作的发出者We plant the trees.动作的发出者表动作被动语态表示主语是动作的承受者The trees are pl

2、anted by us.动作的承受者被动语态的构成主语+be + donebe负责时态变化相当于助动词The flowers are planted by Jimdone体现被动，过去分词恒定不变被动语态的构成The dog bit the man.bitebitbittenThe man bit the dog.The man was bitten by the dog.被动语态的构成The boy ate my egg.eat-ate-eatenMy egg _ by the boy.was eaten 被动语态的构成People speak English in Canadaspeaks

3、pokespoken English _ by people in Canada. is spoken被动语态的构成People speak English in Canadaspeakspokespoken English _ by people in Canada. is spoken被动语态的思路判断句子的时态判断主语与动词之间的关系（即主语是动作的发出者还是承受者，如果主语是动作的发出者则是主动语态。如果主语是动作的承受者则是被动语态）主语的单复数直接决定be动词的单复数形式。被动语态的思路1) You have to be 18 years old before you _ to d

4、rive a car.allow B. are allowed C. allowed2) Many accidents _ by careless drivers last year. are caused B. caused C. were caused3.Cotton (棉花)_ in the southeast of China.is grown B. are grown C. grows D. grow4.A lot of things_ by people to save the little girl now.A. are doing B. are being done .C. h

5、as been done D. will be done5.Last year a large number of trees_(cut) down.BCACwere cut被动语态的思路1.They make machines in that factory.2.Everybody likes this song.被动语态的时态被动语态的时态一般现在时现在进行时一般过去时一般将来时现在完成时被动词体现时态bebebebebeam, is, aream/is/are beingwas, werewill behave/has beendonedonedonedonedonedone被动语态的时态被动语态的时态过去进行时过去完成时过去将来时情态动词被动词体现时态