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1、Teachers who are kind are popular with the students.Mr.Wang,who is kind,is popular with the students.,分析两种定语从句省略后的结果:,限制性定语从句省略后主语所指就不明确，所以不能省略。,非限制性定语从句省略后意义 仍然完整，所以可以省略。,逗号隔开,修饰限定,补充解释,能,不能,的,两个句子,无 逗号,定语从句,Teachers who are kind are popular with the students.友善的老师受学生欢迎。Mr.Wang,who is kind,is popul
2、ar with the students.王老师很受学生欢迎，他很友善。,非限制性定语从句是先行词的附加说明,去掉了也 不会影响主句意思,它与主句之间通常用逗号分开。引导“非限定”的关系词有：1.指人时：2.指物时：which（可指某个词也可指整个主句，从句只能位于主句之后）as（表示正如，可位于主句前或主句后）3.指地点时：4.指时间时：5.指原因时：,非限制性定语从句的用法 See Vic.En.P66-67,who,whom,whose,which,as,where=相应介词+which,when=相应介词+which,for which（切不可用why）,1.The famous ba
3、sketball star,_ is an American,came to China yesterday.2.In those days,she used to go to Mr.Black,with _ she had a wonderful time.3.I bought a car yesterday,_ cost me a lot.4.Xian,_ I visited last year,is a nice old city.5.He will come to see me next July,_ he wont be so busy.6.The school,_ I once s
4、tudied,was built thirty years ago.7.John said hed been working in the office for an hour,_ was true.8.The managers daughter,_ name is Ann,gave me a patient smile.,who,whom,which,which,课堂练习,when,where,which,whose,在 of which/whom 之前可以使用表达数量或定位的数词或代词,1.I am doing different types of exercises,all of _ a
5、re quite helpful to my health.2.Many people,some of _ are not overweight,are going on diets.3.There are 54 students in my class,three of _ come from US.,Other examples:,which,whom,whom,“非限定”使用须知1.从句中所有的关系词都不可省略2.从句通常不能用that引导3.在“非限定”中,指人的关系代词作宾语时,只能用宾格whom,不能用who替换,也不能省略。4.从句不能用why引导,要用 for which 代替
6、why5.从句置于句首时,不能用which引导;而要用关系代词 as 引导(as可放主句前,也可放主句后),要点归纳,1)I have a sister who works in a hospital.,我有一位在医院工作的姐姐。（不只一位姐姐）,2)I have a sister,who works in a hospital.,我有一位姐姐，她在医院工作。（只有一位姐姐）,注意1：有时同一个限制性从句变为非限制性从句会改变全句的意思。,His father,who works in Beijing,came back yesterday.,Shanghai,which is in East
7、 China,is developing rapidly.,注意2:当先行词是地名人名、世界上独一无二的事物或家庭唯一成员时，通常只用非限制性定语从句。,as 和 which 可指代整个主句(=and this/and that)as 可放在句中或句首,which 只放在句中_ we know,smoking is harmful to ones health.The sun heats the earth,_ is very important to us.,As,which,注意3:as/which 引导非限定性定语从句的区别,关系代词as在定语从句中指代整件事，充当句中的主语或者宾语，它
8、经常和the same,such,as一起搭配使用，共同构成一个固定词组。As we all know,he is a famous scientist.As is expected,he is a diligent boy.She has the same book as you have.,as 引导非限制性从句，常意为“正如”。可出现在句首、句中、句末。常见结构有：,as is known to all as is often the caseas might/could be expected as has been said beforeas has been mentioned a
9、boveas has been pointed out as can be imaginedas can be seen(from these figures)as often happens as will be shown,这是常有的事,正如人们所预料的,正如上面所提到的,正如前面所说的,正如所指出的,正如所示,The earth is round._ is known to all.The earth is round,_ is known to all._ is known to all,the earth is round._ is known to all that the ear
10、th is round._ is known to all is that the earth is round.,It,which/as,As,It,Compare:,(定从),(形式主语),What,（主语从句）,_ we expected,he made a long speech A As B That C Which D ItHe made a long speech,_was unexpected.A as B that C which D it,当主句和从句语义一致时，用as；反之，用which来引导非限制性定语从句。,A,C,This is the same book as I
11、 lost.This is the same book that I lost.,这本书和我丢的那本一模一样。,这本书就是我丢的那本。,注意4：非限制性定语从句和简单句的比较,1)He failed in the exam._ made his parents angry.2)He failed in the exam,_ made his parents angry.,3)He has two sons.Both of _ are teachers.4)He has two sons,both of _ are teachers.,This,which,whom,them,注意5：定语从句和
12、其他从句的比较,Put the book _ it is when you have finished reading.A.which B.where C.in which D.at the place,(地点状语从句),When you read the book,youd better make a mark _ you have any questions.A.at which B.at where C.the place where D.where,(地点状语从句),Practice,高考链接,1.It is reported that two schools,_ are being
13、built in my hometown,will open next year.(2007四川)A.they both B.which both C.both of them D.both of which 2.I have many friends,some _are businessmen.(2005全国)A.why B.from which C.who of D.of whom,3.Last week,only two people came to look at the house,_ wanted to buy it.(07安徽)A.none of them B.both of t
14、hem C.neither of whom D.none of whom 4.The factory produces half a million pairs of shoes every year,80%_ are sold abroad.(2004辽宁)A.of which B.which of C.of them D.of that,5.I walked in our garden,_ Tom and Jim were tying a big sign onto one of the trees.(05辽宁)A.which B.when C.where D.that 6.Great changes have taken place in that school.It is no longer what it was 20 years ago,_ it was so poorly equipped.(05安徽)A.when B.which C.what D.that7.Jim passed the driving test,_ surprised everybody in the office.(05浙江)A.which B.that C.this D.it,Summary,
