Unit7_Teenagers_should_be_allowed_to_choose_their_own_clothes_语法课件(人教新课标九年级).ppt

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1、（The Passive Voice).主动语态与被动语态主动语态与被动语态： 英语动词有两种语态，即主动语态英语动词有两种语态，即主动语态(The Active Voice)与被动语态（与被动语态（The Passive Voice)。主动语态表示主语是动作的执行者主动语态表示主语是动作的执行者;被动语态表示被动语态表示主语是动作的承受者。主语是动作的承受者。 e.g. 1.They make trains in Zhuzhou . (答案答案） Trains are made in Zhuzhou. （答案答案）2.The farmers grow cotton every year. （

2、答案答案） Cotton is grown by the farmers every year. （答答案案）主动语态主动语态被动语态被动语态主动语态主动语态被动语态被动语态e.g many people speak English.Englishis spokenby manypeople. 主动语态变被动语态的步骤：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；、主动语态的宾语变为被动语态的主语；2、主动句的谓语动词变为被动结构；、主动句的谓语动词变为被动结构；3、主动句的主语变为被动句的宾语，由、主动句的主语变为被动句的宾语，由by 引出，引出，当不强调动当不强调动 作

3、的执行者时，常省略。作的执行者时，常省略。 一般现在时被动语态的构成：一般现在时被动语态的构成： am/is/are+及物动词的过去分词及物动词的过去分词 动词过去分词的构成规则（与动词过去式构成规则一样）：1、一般在动词原形末尾加、一般在动词原形末尾加-ed，looked played2、结尾是、结尾是e的动词加的动词加-d ， lived used3、末尾只有一个辅音字母的重读闭音节词，先、末尾只有一个辅音字母的重读闭音节词，先双写双写 这个辅音字母，再加这个辅音字母，再加-ed， planned ripped4、结尾是、结尾是“辅音字母辅音字母+y”的动词，先变的动词，先变“y”为为“i

4、” ， 再再 加加-ed ， study-studied， carry-carried1、They speak English in Canada .(English.)2、People use wood for making tables. （wood.）3、They make computers in the USA.（Computers）4、They grow rice in South China.（Rice）English is spoken in Canada.Wood is used for making tables.Computer are made in the USA.R

5、ice is grown in South China. 一般过去时被动语态的构成：一般过去时被动语态的构成： was/were+及物动词的过去分词及物动词的过去分词 e.g 1、The bridge was built last year. 2、It was used in the old days. 3、The PRC was founded on October1，1949.were planted The bridge waswas invitedplay把下列句子变成被动语态的句子；把下列句子变成被动语态的句子；1、They planted these trees on weeken

6、ds . These trees on weekends.2、The workers built the bridge in 1968 built by the workers in 1968.3、People invited Yao Ming to play basketball in The USA. Yao Ming to basketball in the USA.4、IBM produced this new type of laptop computer. This new type of laptop computer by IBM.was produced 含情态动词的被动语态

7、构成：含情态动词的被动语态构成： 情态动词（情态动词（can/may/must/should）+be+及物及物动词过去分词动词过去分词 e.g 1、This bike can be repaired. 2、The tree must be put straight in the hole. 3、The classroom should be cleaned every day.把下列主动句变被动句：把下列主动句变被动句：1、We should plant the trees around the lake 2、We must repair the computer now .3、Student

8、s should correct their mistakes .4、We must water the trees well.The trees should be planted around the lake .The computer must be repaired now .Their mistakes should be corrected .The trees must be watered well.翻译下列句子：翻译下列句子：1.去年这里产橘子。去年这里产橘子。2. 他经常受到老师的帮助。他经常受到老师的帮助。3. 昨天晚上昨天晚上8点钟他的家庭作业做完了。点钟他的家庭作业

9、做完了。4.我们学校上美术课。我们学校上美术课。5.前天他掉到河里，但被救了。前天他掉到河里，但被救了。6. 他经常被看见在操场上打篮球。他经常被看见在操场上打篮球。7.刚才他们受到杨老师的表扬。刚才他们受到杨老师的表扬。1。盐产在哪儿？。盐产在哪儿？2。马路两边种了许多树。马路两边种了许多树。3。邮票是用来传送消息的。邮票是用来传送消息的。4。工作一般什么时候完成的。工作一般什么时候完成的。Where is salt produced?Many trees are planted on both sides of the road.Stamps are used for sending me

10、ssage.When is the work finished?5。杯子坏了。杯子坏了。6。椅子放在哪儿？。椅子放在哪儿？7。茶叶种植在哪儿？。茶叶种植在哪儿？8。作业通常在什么时候完成。作业通常在什么时候完成。The cup is broken.Where is the chair put?Where is tea grown?When is the work usually done ?1. Mirrors are used for looking at yourselves.Are mirrors used for looking at yourselves?Mirrors are no

11、t used for looking at yourselves.What are mirrors used for?2.Silk is produced in Suzhou.Is silk produced in Suzhou?Silk isnt produced in Suzhou.Where is silk produced?三、单项选择题：三、单项选择题：1.Woolen clothes are used _keeping us warm. A.of B.by C.for D.in ( )2.Are these fridges made_? A.in China B. in Chine

12、se C.of China D.from Chinese ( )3.-Where are bananas _? - _ grown in South China. A. grow, Its B.grown, Its C.grown, Theyre D.grew, TheyreCAC( )4.The League _ in May , 1922. A. is founded B.was founded C. is built D. was built( )5.The strange thing with three legs_. A.used to drink B. are used for d

13、rinking C. is used for drinking D. used for drinking 6.TV programmes can_ to the other side of the world. A.send B. be sent C.make D.be made7.Older people must_ politely. A. speak to B. be spoken C.be spoken to D. say to8.The moon always _ around the earth. A. goes B. travels C. turns D. A,B and C.(

14、 )9.Many people _English in the world. A.speak B. speaks C. spoke D. are spoken.( )10.We must _ our homework every day. A. be finished B. finish C. are finished D. finished四、把下列句子变成被动句：四、把下列句子变成被动句：1.Chinese people built the Great Wall 2,000 years ago. 2. We must plant more trees next year. 3.Dalian produces big ships. 4.Farmers harvest rice in autumn . 5.We should clean our classroom every day.The Great Wall was built by Chinese people 2000 years ago.More trees must be planted next year.Big ships are produced in Dalian.Rice is harvested in autumn.Our classroom should be cleaned every day.