人教版九年级英语unit9 period2.ppt

1、人类的每一次改革都是社会前进的步伐，每一次思想的升华都越来越接近文明。发明使人类由黑暗走向光明。正因为如此，社会离不开发明。让我们一起走向发明的前源吧。,When was it invented ?,发明使人类由黑暗走向光明。,神七飞天,A: Who was the _ invented by? B: It was invented by _.,Revision,Carl Benz,Bell,Revision,A: Who were the _ invented by? B: They were invented by _.,Edison,Grammar Focus,When was the

2、car invented? It was invented in 1885. When were electric slippers invented?They were invented last year. Who were they invented by?They were invented by julie Thompson. What are they used for?Theyre used for seeing in the dark.,The passive voice.,被动语态,英语中动词有主动语态和被动语态两种语态. 主动语 态表示主语是动作的执行者,被动语态表示主语是

3、动作的 承受者, 在被动语态中动作的执行者有时用by短语表示 出来.,各种时态的被动语态的构成:,助动词be+ (及物动词的) 过去分词,一般现在时,一般过去时,各种时态的被动语态的构成：,一般将来时态 will/am.is.are going to + be +过去分词 过去将来时态 would/was.were going to + be + 过去分词 现在完成时态 have, has + been +过去分词 过去完成时态 had + been +过去分词 现在进行时态 am, is, are + being +过去分词 过去进行时态 was, were + being +过去分词 含情

4、态动词的 情态动词 + be +过去分词,The passive voice.,被动语态,被动语态的用法:,不知动作执行者时,常用被动语态. eg. My bike was stolen yesterday. This car is made in American. 2. 不必要说出动作执行者时,常用. eg. Rome was not built in a day. 3. 为了突出强调动作的承受者时,常用被动语态. eg. Thousands of beaches are polluted (污染).,主动语态变被动语态的步骤： 1、主动语态的宾语变为被动语态的主语； 2、主动句的谓语动词

5、变为被动结构； 3、主动句的主语变为被动句的宾语，由by 引 出，当不强调动作的执行者时，常省略。 4. 其它成分不变。,The passive voice.,被动语态,主动语态变被动语态的结构图:,Bell invented the telephone in 1876.,主语,谓语动词过去时,宾语,时间状语,主语,谓语动词的过去分词,宾语,时间状语,The telephone was invented by Bell in 1876.,变被动语态时需要注意的事项,一变 二套 三注意,宾变主，主变宾，宾语前面by跟，谓语动词变过分，不忘前面be动词跟,套时态，主被动时态一致,注意因人称的变化而

6、引起的主谓一致问题。,所有时态的被动语态否定就是在 最前面的助动词后加 not 疑问就是把最前面的助动词提前。,Many trees are not being planted now,Are many trees being planted now?,把下列的句子变为被动语态的句子： 1、They speak English in Canada . 2、People used wood for making tables. 3、They are making computers in the USA.,English is spoken in Canada(by them).,Wood wa

7、s used for making tables.,Computers are being made in the USA.,把被动句变否定,Computers arent being made in the USA.,4、They have grown rice in South China. 5. We must plant more trees next year. 6.I am going to clean our classroom tomorrow.,More trees must be planted next year.,Our classroom is going to be

8、 cleaned tomorrow.,Rice has been grown in South China.,把被动句变疑问.,Has rice been grown in South China？,变被动语态的特殊情况,一、双宾语,buy/make sb sth,=buy/make sth for sb,give sb sth,=give sth to sb,1.My father bought me a computer.,A computer was bought for me by my father.,I was bought a computer by my father.,2.H

9、e gives me a book.,A book is given to me by him.,I am given a book by him,Sth+be+ 过去分词+ for/to sb+ by sb.,Sb + be+ 过去分词 sth + by sb,二、无to不定式,一感 二听 三让 四看,feel,listen to.hear,let.have.make,watch. see.look at. notice,变为被动时加上to,eg. We often see him play basketball.,He is often seen to play basketball by

10、 us.,The boss made the children work for long.,The children were made to work for long by the boss.,三、注意动词短语的,常考到的动词短语有,完整性,take care of,look after,listen to,speak to,eg. 1.We should speak to the old politely.,The old should be spoken to politely.,2. The nurse takes good care of the baby.,The baby i

11、s taken good care of by the nurse.,四、无被动语态的动词。,不及物动词及系动词,happen,take place,die,rise,come true,come out,eg.1. An accident (happen) just now.,happened,2. Im sure that my dream . (come true) some day in the future,will come true,常用的被动语态短语,be made of from into be used to do for doing as,由-制成的,看出原材料,看不出原

12、材料,原材料制成成品,be filled with be covered with,eg. 1.Paper is made wood.,from,2.Tables are made wood.,3.Wood is made paper and tables.,of,into,被用来-,被用作,用-充满,被-覆盖,用所给动词的正确形式填空：,1) The bike _(fix) up by Xiao Ming yesterday. 2) Sunglasses _ (use) for protecting peoples eyes. 3) A picture _(put) up on the bl

13、ackboard. 4) French_ (speak) in France. 5) Teenagers should _(allow) to choose their own clothes.,was fixed,are used,is put,is spoken,be allowed,就下列句子的画线部分提问：,1.Q:_ A: The stove was invented in 1896. 2.Q: _ A: The Wright brothers invented the plane. 3.Q: _ A: The washing machine is used for washing

14、clothes.,When was the stove invented ?,Who invented the plane ?,What is the washing machine used for ?,就下列句子的画线部分提问：,4.Q: _ A: The helicopter was invented in 1939. 5Q: _ A: The washing machine was invented by Fisher.,When was the helicopter invented ?,Who was the washing machine invented by ?,Choose

15、 the best answer 1). It suddenly snowed while Mary _for the bus. A. waited B. waits C. was waiting D. was waited. 2). Stamps _by people for sending letters. A. use B. using C. used D. are used. 3). The woman fell off the bike and _on the road. A .lay B. was lain C. lied D. has lain 4). Granny Wang t

16、old the little children that the sun _ from the east .A. has risen B. rise C .rises D. is risen 5)._I think the shop_. _ No, its open. It _ at six. A. is closed; is closed B closed; is closed C. closed; close D .closes ;is closed,C,D,A,C,A,4.将下列句子变为被动句. 1). Tom found the lost book two days ago. 2). The students in Class 4 didnt sweep the floor last Friday. 3) .He reads the story book every evening. 4) Betty gave me an eraser a moment ago. 5). We take good care of the old woma