九年级英语全册 Unit 3 Could you please tell me where the restrooms are被动语态课件

1、被动语态 The Passive Voice1.Teenagers should be allowed to choose their own clothes.2.Anna is allowed to wear her own clothes. 4.I am not allowed to go out on school nights. 3. Sixteen-year-olds should be allowed to drive5.Rice is planted in South China.语态：表示主语和谓语动词之间的关系。英语有两种语态，即主动语态和被动语态。 主动语态：表示主语是动作

2、的执行者。被动语态：表示主语是动作的承受者。如：Many students study English.(主动语态) English is studied by many students. (被动语态)语态 助动词be有人称、数的变化,其变化规则与be作为连系动词时一样。如：The desk is made of wood. The desks are made of wood.He is asked a question by the teacher.被动语态的结构助动词be+及物动词的过去分词不同的时态有不同的被动语态结构1.一般现在时的被动语态结构：waterwatered water

3、eduseused usedstudystudied studiedstopstopped stoppeddodid doneriderode riddenFor exampleby many students.主动语态变被动语态的方法1.Many students study English.Englishis studied2.They make shoes in that factory.Shoesare madeby themin that factory.主动语态变被动语态的方法1.把主动语态的宾语变为被动语态的主语。2.把主动语态的谓语变为被动语态的谓语。3.把主动语态的主语变为被

4、动语态的by 短语。（ by短语可以省。 by短语 后跟代词的宾格。）by the teacher.3.The teacher often asks him questions.Heis askedquestions1. 找宾语 -即动作的承受者They make shoes in that factory. Shoes2. 判断宾语的单复数 -即be动词的单复数.are made3. 判断动词的时态 -即be动词的时态.4. 修改谓语的形式 -即原句动词改为过去分词 5. 修改原句的主语 -即by+ 宾语（原主语）. by them.主变被解题步骤主变宾,宾变主, 谓动be done 时不变

5、,人称、数、格随着变She waters the flowers every day.The flowersWhat does she do every day?every day.are wateredby herThey do their homework after school.Their homework is done by them after school.He plays basketball every week. Basketball is played by him every week.They play football on Sunday.Lucy does th

6、e homework in the evening.They often use computers in class.We make these machines in Beijing.Football is played by them on Sunday.The homework is done by Lucy in the evening.Computers are often used by them in class.These machines are made in Beijing.Practice1. They bought ten computers last term b

7、y them last term.2.一般过去时的被动语态结构：was/were +过去分词last year.2.We planted many trees last year.Many treeswere plantedTen computerswere bought3. I bought a computer last term A computer was bought (by me) last term.The students planted many trees yesterday.Many trees were planted by the students yesterday

8、.They built the tall building last year.He took good care of his little brother yesterday.We cleaned our classroom just now.They used this room for resting.The tall building was built by them last year.His little brother was taken good care of by him yesterday.Our classroom was cleaned by us just no

9、w.This room was used for resting by them.3.一般将来时的被动语态结构：will be+过去分词1.They will finish the work in ten days.by them in ten days.The workwill be finished2.Tom will clean the room tomorrow.The roomwill be cleanedbyTom tomorrow.We will have a sports meeting next week.Children will take some photos in t

10、he schoolyard tomorrow.The headmaster will give a talk this afternoon.A sports meeting will be had by us next week.Some photos will be taken by children in the school tomorrow.A talk will be given by the headmaster this afternoon.4.含有情态动词的被动语态结构：can/may/must/should + be+过去分词1.Amy can take good care

11、of Gina by Amy.Ginacan be taken good care of2.You should drink more water.More water should be drunkby you. Ann can take good care of the cats The cats can be taken good care of by Ann.情态动词(model verb)： S+ can/must/should等情态动词 + be+过去分词We should clean the classroom every day.The classroom should be

12、cleaned by us every day. He can carry the basket. The basket can be carried by him.1.He can take care of the baby.2.Lucy may draw the pictures.3.You must turn off the lights.4.They should learn English well. The baby can be taken care of by him.The picture may be drawn by Lucy.The lights must be tur

13、ned off by you.English should be learned well by them.5.现在进行时的被动语态的结构is / am / are + being 过去分词1.Some workers are painting the rooms nowby some workers now.The roomsare being painted2.He is watching TV.TVis being watched by him.6.现在完成时的被动语态的结构have / has been 过去分词1.We have made twenty more keysby us.

14、Twenty more keyshave been made2.We have finished our compositions.Our compositionshave been finishedby us.表格：被动态基本结构时态被动语态结构一般现在时一般过去时现在进行时过去进行时一般将来时过去将来时现在完成时过去完成时am/is/are donewas/were doneam/is/are being donewas/were being doneshall/will/be going to be donewould be donehave/has been donehad been

15、doneSuch books are written for children. 这些书是为儿童写的。I havent been told about it . 没有人告诉我这件事被动语态的用法（1）不知道或没有必要说明动作的执行者是谁.Its / was said / believed / reported / + that Its reported that about three hundred people were killed in this earthquake. 据报道，这次地震中大约有三百人死亡。 （2）强调动作的承受者，这时应用by短语。The cup was broken

16、 by David.（3）作客观说明时，常采用一种被动语态句型.填空（完成被动语态填空） 1. They often clean their classroom after school . （改为被动语态） Their classroom _ often _ by them after school. 2. Li Lei gave Tom a new pen last week . （同上） A new pen _ _ _ Tom last week . iscleanedwas given byPractice3. A lot of people in China can speak En

17、glish now . （同上） English _ _ _ by a lot of people in China now. 4. I have learned English for about two years. （同上） English _ _ _ for about two years. 5. They will publish these story-books next month. （同上） These story-books _ _ _ next month. can be spokenhas been learnedwill be publishedPractice 1.

18、Our school _in 1993.(open)2.The young trees must_ _ _ well. (look after)3. _ this building_(build)last year?4.The book _ _(write)by him last year.5.The 29th Olympic Games will_ _ (举行) in UK in 2012.was openedbe looked afterWas built was writtenbe held完成下列句子：Practice如：1.He gave me a book. I was given

19、 a book by him. （以I做主语） A book was given to me by Tom. （以物book作主语） 2.He teaches us English. We are taught English by him. （以人当主语） English is taught to us by him. （以物作主语）被动语态的几种类型1.带双宾语句子的被动语态.（指物的宾语叫直接宾语， 指人的宾语叫间接宾语）常见的接双宾语的动词有: to: pass, give, teach, show, bring, hand for: make, buy, draw, sing, ge

20、t,以“人”当主语时，变法和一般的变法一样；以“物”当主语时，在保留的间接宾语前必须加to或for.keep, make 三类的动词常常有宾语补足 语，在被动语态中，宾语补足语位置不变。 We keep food fresh in the fridge. 主 谓 宾 宾补 Food is kept fresh in the fridge. I saw him go into the office building. He was seen to go into the office building. 2.含有宾语补足语的句子的被动语态 不及物动词没有宾语，因此没有被动语态。但有的不及物动词后面加上介词及其他一些词类构成短语动词之后，其作用相当于及物动词，可以接宾语，因而也可以变为被动语态。在变成被动语态时，不能去掉构成短语动词的介词或副词.They take good care of my