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1、限制性定语从句限制性定语从句与与非限制性定语从句非限制性定语从句第1页/共15页定语从句有限制性和非限制性两种。限制性定语从句限制性定语从句是先行词不可缺少的部是先行词不可缺少的部分，去掉它主句意思往往不明确；与先行分，去掉它主句意思往往不明确；与先行词之间不能用逗号分开词之间不能用逗号分开;非限制性定语从句非限制性定语从句是先行词的附加说明，是先行词的附加说明，去掉了也不会影响主句的意思，它与主句去掉了也不会影响主句的意思，它与主句之间通常用逗号分开之间通常用逗号分开。第2页/共15页例如：This is the house which we bought last month.这是我们上个
2、月买的那幢房子。（限制性）The house,which we bought last month,is very nice.这幢房子很漂亮，是我们上个月买的。（非限制性）第3页/共15页非限制性定语从句当先行词是专有名词或物主代词和指示代词所修饰时，其后的定语从句通常是非限制性的。例如：Charles Smith ,who was my former teacher,retired last year.查理史密斯去年退休了，他曾经是我的老师。My house ,which I bought last year,has got a lovely garden.我去年买的的那幢房子带着个漂亮的花
3、园。This novel,which I have read three times,is very touching.这本小说很动人，我已经读了三遍。第4页/共15页非限制性定语从句非限制性定语从句还能将整个主句作为先行词,对其进行修饰,这时从句谓语动词要用第三人称单数。例如：He seems not to have grasped what I meant,which greatly upsets me.他似乎没抓住我的意思，这使我心烦。Liquid water changes to vapor,which is called evaporation.液态水变为蒸汽，这就叫做蒸发。第5页/
4、共15页非限制性定语从句中不用that，而用which，who，whom的情况He made the same mistakes again,_ made his parents very angry.Yesterday I bought a dictionary,_ cost me more than 100 yuan.Mr Smith,_ gave a talk several months ago,will come again.My uncle has come back from abroad,_ I havent met for along time.whichwhichwhowh
5、om在非限制性定语从句中，指事物用which，指人用who或whom。第6页/共15页注意说明：关系代词that和关系副词why不能引导非限制性定语从句。先行词为前面的整个主句时只能用关系代词which第7页/共15页练习:1.l lived in the house,_ was destroyed(破坏)yesterday.A,where B,at the where C,which D.that.2.Our class has 67 students,_ are Party members.A.them B.who C.whom D.whichCB第8页/共15页3.The girl yo
6、u want to see is the one _ lives next to me.A.she B.who C.whom D.which4.Those _ the magazines out of the reading room please gave birth to a baby.A.who has taken B.that took C.who have takenCD第9页/共15页5.Our monitor is the one _ you can turn to for help.A whom B.who C which D that6.Mr.Brown was the fi
7、rst one _ came into the room in _ we held the meeting.A that,that B which,which C which,that D that,which 7.He,_is one of the boys,knows the language.A.who B.that C.whom D.whichAAD第10页/共15页8.Mary will never forget these days _ she lived in China with her mother,_ has a great effect on her life.A.tha
8、t;which B.when;thatC.which;that D.when;which 9.Liming got the first place,_ made his parents happy.A.so B.which C.as D.thisBD第11页/共15页10.Some pre-school children go to a day care center,_ they learn simple games and songs.A.then B.there C.while D.where11.Some pre-school children go to a day care cen
9、ter,_ is helpful for them to learn simple games and songs.A.then B.there C.where D.whichDD第12页/共15页Join the two sentences into one,using who,that or which.1.The fish were not fresh.We bought the fish yesterday.2.The foreigner is from Canada.He visited our school yesterday.3.The boy is called Michael.He broke the window.The fish(which)we bought yesterday were not fresh.The foreigner who visited our school yesterday is from Canada.The boy who broke the window is called Michael.第13页/共15页Goodbye!第14页/共15页感谢您的观看！第15页/共15页