1、定语从句,限制性定语从句 与 非限制性定语从句,定语从句有限制性和非限制性两种。 限制性定语从句是先行词不可缺少的部分，去掉它主句意思往往不明确；与先行词之间不能用逗号分开; 非限制性定语从句是先行词的附加说明，去掉了也不会影响主句的意思，它与主句之间通常用逗号分开。,例如： This is the house which we bought last month. 这是我们上个月买的那幢房子。（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）,非限制性定语从句,当先行词是专有名
2、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。,非限制性定语从句,非限制性定语从句还能
3、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。,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 an
4、gry. 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.,which,which,who,whom,在非限制性定语从句中，指事物用which，指人用who或whom。,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
5、系代词which,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 .which,C,B,3. The girl you want to see is the one _ lives next to me .A. she B.who C. whom D. which 4 .Those _
6、 the magazines out of the reading room please gave birth to a baby .A. who has taken B. that took C. who have taken,C,D,5. Our monitor is the one _ you can turn to for help. A whom B .who C which D that 6. Mr. Brown was the first one _ came into the room in _ we held the meeting.A that, that B which
7、, which C which, that D that, which7. He , _is one of the boys, knows the language. A. who B. that C. whom D. which,A,A,D,8.Mary will never forget these days _ she lived in China with her mother, _ has a great effect on her life. A. that ; which B. when ; that C. which ; that D. when ; which9. Limin
8、g got the first place, _ made his parents happy.A. so B. which C. as D. this,B,D,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 center, _ is helpful for them to learn simple games a
9、nd songs. A.then B.there C.where D. which,D,D,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.,Goodbye !,