一、定语从句
1．定语从句三步：第一找出先行词；第二看先行词在定语从句中的语法功能（做主语、宾语或状语）；第三选择合适的关联词。
2．定语从句在选择关连词that 与which时，常常容易出错，所以应记住什么时候只能用that，什么时候只能用which.
（1）．只能用 that 的情况归纳4种：即先得词被序数词最高级修饰过；先行词为all 、everything、nothing等不定代词；先行词同时是人和物并列时；最后先行词分别被the only 、the very the same、the last 修饰。请看下列四组例句，注意其先行词：
①．The first thing that we should do is to work out a plan .
②．I t almost seemed as if the good man were trying to teach us all that he knew at this lesson .
③．Later my father and Mr.Crosset talked for about half an four of things and persons that they remembered in school.
④．This is the very dictionary that I want to find .
（2）．只用which is 情况有两种情况：一是非限制性定语从句，关连词要用which；二是做介词宾语时只能用which。请看下列两组例句：
I said nothing , which made him more angry .
I have the book about which you are talking .
三、在定语从句的非限制性定语中，which 和as 是容易混淆的。在很多情况下两者兼可互换，但在下列情况中不可互换：
1、通常As 可以放在整句的句首，而which，只能在逗号之后，as 本身含有“正如”，as 在定语从句中既可是主语也可做宾语
As appear from her paper ,she has read widely in Romantic literature.
She is remarkable, as I have told you .
2、 which 在做非限制性定语从句关联词时可以无明确先行词，指前句整个的意思，如：she has warried again,which surprises us .
四、在定语从句中，许多人往往分不清all that 和what,what 实际上只引导名词性从句，它相当于all that两个字，例如：
All that I know is that he has made up his mind to heave the country for a new place.
= what I know is that ……
一、限定性定语从句：
种类 先行词 关联词 例句 说明
定语从句 （人）在从句中做主语或宾语物在从句中做主语或宾语 whowhich This is the doctor who saved the boy’s life .这就是救了孩子生命的医生。She is the new student whom I want to introduce to you .她就是我要介绍给你的新学生Please pass me the book which is lying on the table.请递给我摆在桌上的那本书。The novel which Tom bought is very interesting.汤姆买的小说很有意思。Can you lend me the magazine about which you talked yesterday?你能把昨天谈到的那本杂志借给我吗？ who在从句中做主语whom在从句中做宾语，口语中who可以代替whom，也可以被省去，但做介词宾语时只能用whomwhich在从句中做主语。which充当宾语时可以省去。which做介词宾语不可省

种类 先行词 关联词 例 句 说 明
定语从句 人或物的 whose The professor whose daughter teaches you English is Dr. Williams那位教授是威廉斯他的女儿教你英语。The professor, the daughter of whom teaches you English is Dr. Williams. The bike whose brake was damaged has now been repaired.那辆坏了闸的自行车现在已经修好了。=The bike the brake of which was damaged has now been repaired whose在从句中做定语指某人的也可以用…of whom代替whose指物时也可以用…of which 代替 whose
人或 that The woman that is playing the piano is Miss Zhang.正在弹钢琴的那位妇女是张小姐。I’d like to see the films that are just on show.我想看那些刚上映的电影。 that指人做主语that指物做主语
种类 先行词 关联词 例 句 说 明
物all, little much和some,any every ,no 构成的合成代词人或物 thatthat They talked for about an hour of things and persons that they remember in the school. 他们谈起他们所记得起的学校里的人和事，谈了大约有半个小时。I’ll tell you all(that )I know about it .我要告诉你我所知道这件事的一切情况。Is there anything (that) I can do for you?有什么我可以帮助做的事吗？I’ve brought everything (that )you need.我把你需要的东西都拿来了。This is the best film that I have seen .这是我看过的最好的一部电影。The first place that we’ll visit is Beijing Library.我们要参观的第一个地方是北京图书馆 先行词分别表示人和物，关系代词要用that，不用who或which先行词表示物，关系代词用that不用which, 在从句中做宾语可省去 。如果先行词是人时，关系代词不受制约，用that或who (whom)均可先行词被形容词最高级或序数词修饰时定语从句用that引导。
定语从句 人或物 that He is the only person that is believable.他是唯一可*的人。John is the very person that she wants to see.约翰正是她要见的人。Who is the man that is talking with Tom ?正在和汤姆谈话的人是谁？Which of the books that you bought is easy to read?你买的那些书中哪一本容易读。 先行词被the only, the very,the same 等修饰时用关系代词that.当主句以who、which开头的特殊疑问句时，定语从句要用that
时间 when He came at a time when we. needed him most.他在我们最需要的时候来了。We’ll never forget the day when the People’s Republic of China was founded.我们永远不会忘记中华人民共和国成立的那一天。 在定语从句中作时间状语
注：先行词是time, minute, moment, next tim很少用关系副词when,可用that 但通常省去。
地点 where This is the room where he put up for the night.这就是他渡过夜晚的那房子。 在定语从句中作地点状语
原因理由 why I know the reason why she studies so well .我知道她学习好的原因。 在定语从句中作原因状语

（2）非限制性定语从句
种类 先行词 关联词 例 句 说 明
非限制性定语从句 人物没有固定的先行词而是一个句子 whowhomwhichwhichas George ,who is my classmate, has won a scholarship.乔治获得了奖学金，他是我的同学。Dr. Li , whom I know very well, will come here tomorrow.李大夫明天将来这儿，我跟他很熟悉。I gave him a New Year card ,which he enjoyed very much.我给他一张贺年卡，他很喜欢它。He studies hard at school when he was young, which leads to his success in his later life .他年轻时在校学习努力，这导致了他后来生活中的成功。He gets up early ，as is always his habit.他总是早起床，这是他的习惯。John was admitted into the college, as we had expected.约翰被大学录取了，这是我们期待的。The earth ,as is known to all ,is round.人人皆知，地球是圆的。 who, whom不能省去，也不能用that代替which指物，不可省去，也不能用that代替which作主语指它前面的整个句子，不可用that代替，强调结果。as指全句，在从句中做主语。as指全句意思，在从句中做宾语。as引导的定语从句可以放在句首，句中或句末。
This is the same book as I lost yesterday.这本书与我昨天丢失的那本书一样。 用于the same… as, such… as ,as…as等结构中。

（3）限制性定语从句与非限制性定语从句的区别
限制性定语从句 非限制性定语从句
从句与先行词的关系 从句是先行词不可缺少的定语，如果省去，主句的意思就会不完整或不明确。 从句只是对先行词的附加说明，如果省去,主句的意思仍然清楚或完整
标 点 从句和主句之间不用逗号分开 从句和主句之间通常用逗号分开
关系代词 指人who (that) whom指物which (that)人和物whose关系代词在从句中作宾语时可以省去 指人who（作主语）whom（做宾语）指物which人和物的whose关系代词一般不可省
修饰 从句只修饰一个名词或代词 可以修饰一个名词或代词也可修饰整个主句
翻译 定语从句译在被修饰词的前面 定语从句通常被译成另一个独立的句子
【专项训练】
1．Football is a very interesting game , is played all over the world．
A．that B．which  C．it D．who
2．Is there anything else you require?
A．which B．that  C．who D．what
3．The last place we visited was the Great Wall．
A．which B．that  C．where D．it
4．He talked happily about the men and books interested him greatly in the school．
A．which B．who  C．it D．that
5．The reailway tunnel,though the train goes, will be completed soon．
A．which B．that  C．it D．whom
6．His uncle works in a factory bicycles are made．
A．that B．which  C．where D．there
7．There is no dictionary you can find everything．
A．that B．which  C．where D．in that
8．Next month, you’ll spend in your hometown is coming．
A．which B．that  C．when D．where
9．Next month, you’ll be in your hometown is coming．
A．which B．that  C．when D．where
10．I often thought of my childhood , I lived on a farm．
A．which B．where  C．when D．who
11．He wanted to know the time he needed to know ．
A．that B．when  C．where D．what
12．There isn’t so much noise in the country in big cities．
A．that B．which  C．where D．as
13．They could only read such stories had been rewritten in simple English ．
A．that B．which  C．as D．what
14．The stems of bamboo are hollow makes them very light．
A．which B．as  C．that D．it
15．Crusoe’s dog hecame ill and died , made him very lonely ．
A．as B．which  C．that D．this
16．They’ve invited me to their party , is kind of them．
A．as B．which  C．That D．this
17． we know now ,bats come out only at night ．
A．As B．Which  C ．That D．What
18．John got beaten in the game , had been expected ．
A．as B．that  C．what D．who
19． has been said above ,grammar is a set of dead rules．
A．Which B．What  C．That D．As
20．Do you know the reason he was late?
A．that B．which  C．for what D．for which
21．He built a telescope he could study the skies．
A．in which B．with that  C．through which D．by it
22．I have bought two ballpens , writes well ．
A．none of which B．neither of which  C．none of them D．neither of them
23．There are two thousand students in our school , are girls ．
A．of whom two thirds B．two -thirds of them
C．two -third in them D．two -thirds in which
24．Do you know the man ?
A．whom I spoke B．to who I spoke  C．I spoke to D．that I spoke
25．The factory we’ll visit next week isn’t far from here ．
A．where B．in which  C．which D．to which
26．This is one of the best films this year．
A．have been shown B．that have shown  C．that have been shown D．which has been shown
27．Can you lend me the book the other day ?
A．you talked about B．about that you talked  C．that you talked D．which you talked
28．Is there any one in you class family is in the city ．
A．who B．who’s  C．which D．whose
29．I’ll never forget the days we stayed together．
A．when B．in which  C．which D．what
30．Is some German friends visited last week ?
A．this school B．this the school  C．this school one D．this school where
31．I’ll tell you he told me last month ．
A．all which B．all what  C．that all D．all
32．Do you know the reason she got so angry yesterday?
A．for why B．for that  C．which D．why
33．I still remember the day she first wore that pink dress．
A．which B．in which……  C．on that D．on which
34．I’ll show you a store you may buy all you need ．
A．in which , / B．where , which  C．which , that D．that , that
35．Winter is the time of year the days are short and nights are long．
A．where B．when  C．that D．on which
36．The train she was travelling was late．
A．which B．on which  C．for which D．on that
37．The second World War millions of people were killed ended in 1945．
A．during which B．in that  C．where D．on which
38．Is oxygen the only gas helps fire burn ?
A．that B．/  C．which D．it
39．This is the best hotel in the city I know ．
A．which B．that  C．where D．it
40．I’ve read all the books were borrowed from the library ．
A．that B．/  C．which D．they
41．The scientist and his achievements you told me about are admired by us all．
A．which B．who  C．that D．whose
42．She hasn’t got enough money to buy the rings ．
A．which B．that  C．with which D．for which
43．Finally came the day he bad to beging his study for the next term．
A．which B．since  C．that D．till
44．We hope to get such a tool he is using ．
A．which B．as  C．that D．where
45．Is there anything to you ．
A．that is belonged B．that belongs  C．which belongs D．that belong
46．You can take any seat is free ．
A．which B．where  C．that D．in which
47．The old woman has two sons ,one is a teacher．
A．of them B．of which  C．of whom D．of who
48．My hometown is no longer the same it used to be ．
A．which B．as  C．that D．like
49．You may take anything useful ．
A．you want B．what you want  C．you want them D．which you want
50．He tore up my photo and upset me ．
A．that B．it  C．which D．what
51．During the days , he worked as a servant at the Browns．
A．followed B．following  C．to follow D．that followed
52．The beautiful dress Miss Jones went to the ball was borrowed from a friend of hers ．
A．that B．wearing which  C．worn by D．in which
53．The clever boy made a hole in the wall , he could see what was going on inside the house．
A．in which B．through which  C．at which D．on which
54．The brave man , the tiger was shor is a good bunter．
A．by which B．by whom  C．by that D．of whom
55．The knife we used to cut the bread is very sharp ．
A．with which B．with it  C．with that D．which
【答案】：
1 B 2 B 3 B 4 D 5 A 6 C 7 C 8 A 9 C 10 C
11 A 12 D 13 C 14 A 15 B 16 B 17 A 18 A 19 D 20 D
21 C 22 B 23 A 24 C 25 C 26 C 27 A 28 D 29 A 30 B
31 D 32 D 33 D 34 A 35 B 36 B 37 A 38 A 39 B 40 A
41 C 42 C 43 C 44 B 45 B 46 C 47C 48 B 49 A 50A
51 D 52 D 53 B 54 B 55 A