定语从句中as与which的区别.ppt

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1、which 和和as引导非限制性定语从句的引导非限制性定语从句的区别区别which 和和as引导非限制性定语从句的引导非限制性定语从句的区别区别熟读深思熟读深思朗读以下各句朗读以下各句,注意划线部分注意划线部分,并思考：并思考：which和和as引导的非限制性定语从句引导的非限制性定语从句有何有何区别区别？（位置，含义）？（位置，含义）1.As is known to us all,the earth moves round the sun.众所周知众所周知,地球是围绕太阳运动的地球是围绕太阳运动的.2.David,as you know,is a photographer.戴戴维是个摄影师维

2、是个摄影师,如你所知。如你所知。(不可用不可用which)3.Li Ming is late,as is often the case.李明迟李明迟到了到了,这是经常发生的。这是经常发生的。(可用可用which)4.Li Ming was late,which(=and this)made Mr.Zhang very angry.李明迟到了李明迟到了,这使张先这使张先生非常生气。生非常生气。(不可用不可用as)5.He married her,which was unexpected.他他和她结婚了和她结婚了,这是出乎意料的。这是出乎意料的。(不可用不可用as)主语主语宾语宾语主语主语主语主语

3、主语主语主句前主句前主句中主句中主句后主句后主句后主句后主句后主句后 相同之处：相同之处：当先行词指当先行词指整个主句整个主句的意思时的意思时,这类这类非限制性非限制性_只只能由能由_或或 _来引导。来引导。两者的区别在于：两者的区别在于：1.which引导的定语从句只能位于引导的定语从句只能位于_,而而as引导的定语引导的定语从句可从句可位于位于_。（位置）。（位置）2._常译作常译作“这这”;而而_常译作常译作“正如正如”,且多与且多与see,expect,imagine,know,hope等动词连用。（含义）等动词连用。（含义）3.在定语从句中在定语从句中作主语作主语时时,若用若用_,其

4、谓语部分一般有其谓语部分一般有be;若若谓语谓语是是不含不含be的行为动词时的行为动词时,要用要用_。4._引导的定语从句只表示一个引导的定语从句只表示一个众所周知或意料之中众所周知或意料之中的事的事,而而which不受此限制。不受此限制。5.as常用于固定搭配中常用于固定搭配中:as is often the case(这是常有的事这是常有的事),as we expected(不出所料不出所料);as often happens(正如经常发生的正如经常发生的那样那样)；as is known to all(众所周知众所周知);as has been said before(正如以前所说正如以

5、前所说);as is mentioned above(正如上面所正如上面所提到的提到的)等。等。主句后主句后主句前、中、后主句前、中、后whichasaswhichas定语从句定语从句whichas灵活运用灵活运用:名师名师P219 一、单句填空一、单句填空 用用which 或或 as 填空填空灵活运用灵活运用:名师名师P219 一、单句填空一、单句填空 用用which 或或 as 填空填空1.After graduating from college,I took some time off to go traveling,_turned out to be a wise decision.

6、2.I looked into their eyes,I found they didnt care,_told me it would be useless,but when I looked into yours,I saw kindness.3.Jim passed the driving test,_ surprised everybody in the office.whichwhichwhich灵活运用灵活运用:名师名师P219 一、单句填空一、单句填空 用用which 或或 as 填空填空4._ is often the case,we have worked out the p

7、roduction plan.5._ is mentioned above,paper is first made in China.7._ is reported in the newspapers,talks between the two countries are making progress.10._is known to all,the moon travels round the earth once every month.AsAsAsAs灵活运用灵活运用:名师名师P219 一、单句填空一、单句填空 用用which 或或 as 填空填空6.Helen was much kin

8、der to her youngest son than to the others,_,of course,made the others envy him.8.The result of the experiment was very good,_we hadnt expect.9.The weather turned out to be very good,_was more than we could expect.whichwhichwhich灵活运用灵活运用:名师名师P219 三、写作运用三、写作运用1.我有一个同学叫我有一个同学叫Kate,她的她的妈妈是我以前的英语老师妈妈是我以

9、前的英语老师；I have a classmate called Kate,_2.Kate是一个容易相处的是一个容易相处的人人,我们都喜欢她；我们都喜欢她；Kate is a girl _ and we all like her.3.Kate在此次口语竞赛中获得第一名在此次口语竞赛中获得第一名,这这使得她妈妈很高兴；使得她妈妈很高兴；Kate took the first place in the Speech Contest,_4.新年就要到了新年就要到了,到时到时Kate会和她妈妈一起去香港会和她妈妈一起去香港；The New Year is coming,_5.众所周知众所周知,香港是一

10、个购物天堂香港是一个购物天堂,Kate打算在那里买她打算在那里买她需要的需要的东西东西。_,Hongkong is a shopping paradise,_whose mother is my former English teacherwho is easy to get along withwhich made her mother very happy.when Kate will go to Hongkong together with her mother.As we all knowwhere Kate intends to buy all that she needs.I ha

11、ve a classmate called Kate,whose mother is my former English teacher.Kate is a girl who is easy to get along with and we all like her.Kate took the first place in the Speech Contest,which made her mother very happy.The New Year is coming,when Kate will go to Hongkong together with her mother.As we all know,Hongkong is a shopping paradise,where Kate intends to buy all that she needs.