Unit 13 We are trying to save the earth-被动语态.ppt

1、Passive Voice,Unit 13 We are trying to save the earth,一、何时使用被动语态,1. 不知道谁是动作的执行者或没有必要,Paper is made from wood.,He was wounded in the fight.,2. 需要强调动作的承受者时,Books and newspapers in the reading room mustnt be taken away.,He was awarded first prize in that contest.,3为了使语气婉转，避免提及自己或对方而使 用被动语态，或由于修饰的需要，使用被

2、动 语态，使句子得以更好的安排。,The construction of the new lab must be completed by the end of next month.,Electricity is used to run machines.,Discusion: the active voice 主动语态 & the passive voice被动语态,什么时候用主动语态或被动语态？ 主动语态和被动语态的动词结构是怎样的？ 3. 主动语态句子变成被动语态句子哪三个部分要变？怎么变？,什么时候用主动语态或被动语态？,主语是动作的执行者就用主动语态 主语是动作的承受者就用被动语态

3、,We study English at school. English is studied by us at school.,我们用木头做家具。 那只老鼠被猫抓住了 相机是用来照相的。,Discusion 1: the active voice 主动语态 & the passive voice被动语态,主动语态,被动语态,被动语态,p.t.,Discusion 2: the active voice 主动语态 & the passive voice被动语态,We call the doctor. People dont play football here. The truck was c

4、leaned yesterday.,Decide if these sentences are active or passive.,Mr Chen teaches us English. The classroom was cleaned.,active,active,passive,active,passive,Exercise ：,1.The key _for locking the classroom door. A.uses B. is used C.is using D.use 2.A new school _over there two years ago. A. built B

5、. was built C. build D. builds 3.The lost child _ on October 7,1998. A.was found B. is found C. found D. find 4.A talk on Chinese history_in the school hall yesterday. A.is given B.give C.was given D. gave,B,B,A,C,Disscusion 3: the active voice 主动语态 & the passive voice被动语态,主动语态句子变成被动语态句子哪三个部分 要变？怎么变

6、？,1. 把原句的宾语改为主语。,2. 把原句的谓语动词改为被动语态结构( be + p.p.)。,3. 把原句的主语改为by的宾语（用宾格）,可省略。,e.g. She cleaned the room.,The room was cleaned ( by her).,1.They play basketball in their school.(改为被动语态) Basketball_ _in their school by them.,is played,2. The naughty boy broke the window. The window _ _ by the naughty b

7、oy. 3. People speak English all over the world. English _ _ by people all over the world.,Exercise ：,was broken,is spoken,Exercise ：translate the following sentences,这些照片是上星期拍的 。 这本书是鲁迅写的。 史密斯一家被邀请参加了派对。,These photos were taken last week.,This book was written by Lu Xun.,The Smiths were invited to the party.,Summary：,什么时候用主动语态或被动语态？ 主动语态和被动语态的动词结构是怎样的？ 3. 主动语态句子变成被动语态句子哪三个部分要变？怎么变？,1.I washed my clothes once a day.,My clothes was washed (by me) once a day.,I was washed my clothes once a day.,X,2.They took Jim to the hospital.,3.Tom closed the shop just now.,They was took Jim to t