初中被动语态的奥秘ppt课件.ppt

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1、初中被动语态的奥秘,中考必考的重点语法,.主动语态与被动语态：英语的动词有两种语态，即主动语态(The Active Voice)与被动语态（The Passive Voice)。主动语态表示主语是动作的执行者;被动语态表示主语是动作的承受者。,主动语态,被动语态,主动语态,被动语态,一般现在时被动语态的构成：主语+am/is/are+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-ed，looked played,2、结尾是e的动词加-d，lived used,3、末尾只有一个辅音字母的重读闭音节词，先双写 这个辅音字母，再加-ed，pla

2、nned tripped,4、结尾是“辅音字母+y”的动词，先变“y”为“i”，再 加-ed，study-studied，carry-carried,写出下列动词的过去式，过去分词：,sing-sang-sung,build-built-built,1、speak（）2、use（）3、make（）4、write（）5、grow()6、plant（）7、produce（）8、ask（）9、plan（）10、send（）11、build（）12、invite（）,1、speak spoke spoken 2、use used used3、make made made 4、write wrote w

3、ritten5、grow grew grown 6、plant planted planted7、produce produced produced 8、ask asked asked9、plan planned planned 10、send sent sent11、build built built 12、invite invited invited,请写出下列动词的过去式和过去分词：,sing-sang-sung,build-built-built,e.g many people speak English.,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

4、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by引出，当不强调动 作的执行者时，常省略。,把下列的句子变为被动语态的句子：1、They speak English in Canada.(English.)2、People use wood for making tables.（wood.）3、The 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.,Comput

5、er are made in the USA.,Rice is grown in South China.,1、结构 be+过去分词(及物的),2、各种时态的被动结构：一般现在时：主语+am/is/are+过去分词 The Chinese food _ to be the healthiest in the world.A.considers B.is considering C.is considered D.has considered,1、结构 be+过去分词,一般过去时：was/were+过去分词John _,for he went swimming yesterday without

6、 permission.A.would punished B.had punished C.punished D.was punished,were planted,The bridge was,was produced,一般将来时：主语+will+be+过去分词The new school _ when the new term begins.A.finishes B.will finish C.will be finished D.would finish,1、结构 be+being+过去分词,现在进行时：主语+am/is/are+being+过去分词-Have you moved int

7、o the new house?-Not yet.Rooms _.A.are painting B.are painted are being painting D.are being painted,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.,1、一般现在时的被动语态2、一般过去时的被动语态3、一般将来时的被动语态4、现在进行时的被动语态5、情

8、态动词的被动语态,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 Chinese 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,Theyre()4.The League _ in May,1922.A.is founded

9、 B.was founded C.is built D.was built()5.The strange thing with three legs_.A.used to drink B.are used for drinking C.is used for drinking D.used for drinking,C,A,C,B,C,()6.TV programmes can_ to the other side of the world.A.send B.be sent C.make D.be made()7.Older people must_ politely.A.speak to B

10、.be spoken C.be spoken to D.say to()8.The moon always _ around the earth.A.goes B.travels C.turns D.A,B and C.()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,B,C,D,A,B,四、把下列句子变成被动句：1.Ch

11、inese people built the Great Wall 2,000 years ago.2.We must plant more trees next year here.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 here next year.,Big ships are produced in Dalian.,Rice is harvested in autumn.,Our classroom should be cleaned every day.,Thank you for your attention!,Goodbye!,