定语从句既是英语语法的一个重点，同时又是一个难点。说它是难点，主要难在两点上：一点是如何正确判断什么样的汉语句子要译为英语的带定语从句的复合句；另一点是定语从句的引导词较多(包括关系代词who, that, which, as 和关系副词when, where, why)，而且其用法也较复杂。那么到底什么情况下用when和where来引导定语从句呢它们又该怎么用呢下面就举例说明：
一、when：当主句中的先行词(即主句中被后面定语从句修饰的词)是表示时间意义的名词时，它只能作定语从句的时间状语，放在定语从句句首。如果定语从句的引导词是作该定语从句的主语或宾语，则要改用关系代词that或which来引导。例如：
The days when we used foreign oil are gone. 我们用洋油的日子一去不复返了。
I'll never forget the day when I was born. (=I'll never forget my birthday.) 我永远不会忘记我出生的日子。
It happened in November when the weather was wet and cold. 这事发生在天气又湿又冷的十一月。
In the years that (which) followed, Marx kept on studying English and using it. 在这之后的几年中，马克思继续学习和使用英语。(that作定语从句"that followed"的主语)
The day (that) I always remember in all my life is my birthday. 我一生中最难忘的日子是我的生日。(that作定语从句"that I always remember in all my life"的宾语，that可以省略)
二、where：当主句中的先行词是表示地点意义的名词时，它只能作其所在
的定语从句的地点状语，放在定语从句的句首。如果定语从句的引导词作该定语从句的主语或宾语时，也要改用关系代词that或which来引导。例如：
This is the room where(＝in which)I lived last year. 这就是我去年住过的房间。
Is this the classroom where(=in which) the old worker is going to make/give us a report 这就是那位老工人要给我们做报告的教室吗
Let's look for a place where we can swim. 咱们找一个可以游泳的地方吧。
The building that is being built over there will be a new hospital. 正在那边建的楼房将是一家新医院。(引导词that作定语从句"that is being built over there"的主语)
That is the factory (that) they visited last month. 那就是他们上个月参观过的工厂。(引导词that作定语从句"(that) they visited last month"的宾语，that可以省略)
Where 引导的从句 【教学目标】让学生掌握八种状语从句的基本用法 【教学难点】where 引导的状语从句和正确运用where的注意事项 【教学重点】where 引导的状语从句 【教学过程】 一．where 的用法与高考难点 where的用法灵活多变,表现在它可以引导多种从句，请看下面的句子： Where he was born is unknown to us. He told me where he was born. This is where he was born. I have no idea where he was born. This is the place where he was born. He works where he was born. No matter where you go ,I’ll wait for you here. （一）．作连接副词，引导名词性从句 I. 引导主语从句 we shall spend our holiday this summer ____ decided. A. why, is not B. when , has not C. where, has not been D. That, hadn’t 有时为了平衡句子，避免句子头重脚轻，使用形式主语it，指代where引导的主语从句。如：It’s really no business of yours where I spent my summer. 我们在哪里度假确实与你无关。 II. 引导宾语从句 you make sure ____ the gold ring A. where Alice had put B. where had Alice put C. where Alice has put D. where has Alice put graduation he asked to be sent to _____. he is most needed B. where he needed C. where he is mostly needed D. where is he mostly needed III. 引导表语从句 and get your coat. It’s ____ you left it. A. there B. where C. there where D. where there 有时where表抽象的含义，不同的情况下译法也不同。 That’s where we differ. 这就是我们的分歧所在。 That’s where we stand. 这就是我们的立场。 That’s where you are wrong. 你的错就在这儿。
where引导的定语从句修饰抽象名词。 一、where定语从句修饰抽象名词point You reach a point where medicine can’t help. 你已到了药物无法治疗的地步。 The crisis has reached a point where the receiver will have to be called in. 危机已达到非把破产管理人叫来不可的地步。 We have reached a point where a change is needed. 我们到了必须改一改的地步。 注：有时point也可以是具体的地点： Let the point where AB cuts CD be called E. 设AB线与CD线的相交点为E。 The accident happened at the point where the A15 joins the M1. 事故发生在A15与M1交叉的十字路口。 二、where定语从句修饰抽象名词case There are cases where the word “mighty” is used as an adverb. 在一些情况下，mighty一词可用作副词。 Today, we’ll discuss a number of cases where beginners of English fail to use the language properly. 今天，我们将讨论一些英语初学者对英语使用不当的问题。 三、where定语从句修饰抽象名词activity Those successful deaf dancers think that dancing is an activity where sight matters more than hearing. 那些失聪的成功舞蹈演员们认为，舞蹈是一种让人看胜过让人听的活动。 四、where定语从句修饰抽象名词situation He got into a situation where it is hard to decide what is right and wrong. 他陷入一种难以分辨是非的局面。 If you risk something important, you cause it to be in a dangerous situation where you might lose it. 你如果拿重要的东西去冒险，那你就是将它置于一种可能会失去它的危险境地。 五、where定语从句修饰抽象名词position It’s put me in a position where I can’t afford to take the job. 这使我陷入一种不能接受此工作的境地。 六、where定语从句修饰抽象名词job
when 和 where 引导定语从句的用法 定语从句既是英语语法的一个重点，同时又是一个难点。说它是难点，主要难在两点上：一点是如何正确判断什么样的汉语句子要译为英语的带定语从句的复合句；另一点是定语从句的引导词较多(包括关系代词who, that, which, as 和关系副词when, where, why)，而且其用法也较复杂。那么到底什么情况下用when和where来引导定语从句呢？它们又该怎么用呢？下面就举例说明： 一、when：当主句中的先行词(即主句中被后面定语从句修饰的词)是表示时间意义的名词时，它只能作定语从句的时间状语，放在定语从句句首。如果定语从句的引导词是作该定语从句的主语或宾语，则要改用关系代词that或which来引导。例如： The days when we used foreign oil are gone. 我们用洋油的日子一去不复返了。 I'll never forget the day when I was born. (=I'll never forget my birthday.) 我永远不会忘记我出生的日子。 It happened in November when the weather was wet and cold. 这事发生在天气又湿又冷的十一月。 In the years that (which) followed, Marx kept on studying English and using it. 在这之后的几年中，马克思继续学习和使用英语。(that作定语从句"that followed"的主语) The day (that) I always remember in all my life is my birthday. 我一生中最难忘的日子是我的生日。(that作定语从句"that I always remember in all my life"的宾语，that可以省略)
Where引导定语从句,先行词不一定都表 示地点 1、We will discuss a number of cases __ beginners of English fail to use the language preperly、A、which B、as C、why D、where 2、He was driving so fast as to get himself into a dangerous situation ___he is likely to lose the control over his car、 A、which B、as C、why D、where 两道题都选where ,但就是case, situation都不就是地点,如何理解？ 在“先行词不就是表示地点的名词”的前提下,如何判断就是否使用关系副词where来引导定语从句的问题就是一个高频考点。就就是说,关系副词where 所指代的先行词不只就是表示地点的名词。
用Where引导定语从句,先行词不一定都表示地点按照通常的理解,当where 引导定语从句时,它的先行词就就是表示地点的名词,但事实并不就是我们想象的那么简单。很多情况下,where所指代的先行词并不表示地点。请瞧以下几个例句: Other research, where siblings have been asked to say who their mother and father favor, suggests that mothers do tend to show a preference for their first-born son, but fathers often show great affection for their youngest daughters、 1、Remember that the best relationship is one where your love for each other is greater than your need for each other、请记住,最深的感情关系表现为彼此间的爱超过彼此间的需要。
一、从句是如何出题的？ 1. 时态 2. 考连接词 3. 考语言顺序 二、学好从句的两个基本条件 1. 时态 2. 从句的三个必须:①必须是句子；②必须有连接词；③必须是陈述句 三、状语从句、宾语从句、定语从句重点 1.如何判断何种从句 2. 从句的时态 3. 从句的连接词与扩展 4. 经典单选、从句与选词、长句子分析 四、如何判断三种从句 1. 状语从句无先行词 2. 宾语(表语)从句无先行词有动词或词组 3. 定语从句先行词多为名词或代词 一、When引导的定语从句与时间状语从句的区分 1. when的译法不同。在时间状语中，when 翻译成“当……的时候” I want to be a teacher when I grow up. 当我长大的时候，我要做一名老师。在定语从句中，when不翻译。I won't forget the day when he says he loves me. 我不会忘记他说爱我的那一天。 2. 在时间状语中，when从句前面或后面是句子；定语从句中，when 从句不能位于句首，且通常when前为表示时间的名词day、year等。 3. when在从句的作用不同。在时间状语从句中，when是连词，只起连接主句和从句的作用，不做从句的任何成分。不过when引导的时间状语从句修饰主句的谓语，做主句的时间状语。 在定语从句中，when是关系副词，在从句中代替先行词做从句的时间状语，修饰从句的谓语。 例1 I will always remember the days when I lived with my
grandparents in the country. 例2 I always remember the days in the country when I see the photo of my grandparents. 点评：例1意为“我会永远记得跟我祖父母一起住在乡下的那些日子”，其中when 引导的是一个定语从句, 修饰the days, when在从句中作时间状语。例2意为“当我看到祖父母的照片时，总是会想起在乡下的那些日子”，其中when 引导的从句并不修饰前面的名词the country，因此可判定为时间状语从句。 例1中的when可用in which替代，即从句可改为...in which I lived with my grandparents in the country. 例2中从句前有名词，但根据句意可 知并不是从句所修饰的对象，也不能用“介词+ which”来替代。 二、判断关系代词与关系副词 方法一：用关系代词，还是关系副词完全取决于从句中的谓语动词。及物动词后面无宾语，就必须要求用关系代词；而不及物动词则要求用关系副词。例如： This is the mountain village where I stayed last year. 这是我去年呆过的山村。 I'll never forget the days when I worked together with you. 我永远不会忘记与你共事的日子。 判断改错： 1. This is the mountain village where I visited last year. 2. I will never forget the days when I spent in the countryside. 3. This is the mountain village （which）I visited last year.
Where 引导的名词性从句，定语从句和状语从句 一．Where 引导特殊疑问句，翻译成“哪里，什么地方” Where are you from? Where are you going to work? 二. where引导地点状语从句：where 通常翻译为“在…..的地方，哪里，在哪里” Stay where you are! （待着在你所在的地方） Where you are happy, you can find a job.（在哪里你是开心的，你就可以找一份工作）Where there is a will, there is a way. 在有意志的地方，就有一条道路。（有志者，事竟成）。wherever 引导让步状语从句，通常翻译为“无论哪里，无论什么地方” Wherever you go, I’ll follow you. 我无论你去什么地方，我将会追随你。 三. where 引导的名词性从句：where 翻译成“.......的地方，哪里，什么地方” 1. 主语从句：Where he will go is uncertain now. 从句作主语 2.宾语从句：I don’t know where he will go. 从句作宾语 3.表语从句：You are saying that everyone should be equal, and this is where I disagree. 句中where是连接副词，引导表语从句，而本身在从句中做状语 4.同位语从句：I really have no idea where she has gone. 从句作同位语，对idea进行解释说明。 四．where引导定语从句：where 翻译成“在那里” 通常是表示地点的名词+ where（=介词+which） Beijing is the place where（in which）I was born.北京是我的出生地。 先行词position，situation，case，point，stage是表示“位置，情况, 境遇，地步，形势”等抽象概念的名词，有定语从句修饰时用where 或in which引导。 Can you think out a situation where this word can be used? 你能设想这个单词被使用的场合吗? Her illness has developed to the point where nobody can cure her. 她的病发展到没人能治的地步。e.g. I work in a business ______ almost everyone is waiting for the great chance. A. how B. which C. where D. that 五. 地点状语从句与定语从句的区别： 主要区别在于从句在主句中作什么成分。如果作状语，是状语从句；如果作定语修饰名词，是定语从句. where引导定语从句时，从句前应有一个表示地点的名词作先行词，where 通常可以由“介词+ which”来替代；而状语从句前则无需先行词，直接修饰整个句子。
、先行词指人,在句中作主语who: John,who is only five,has an inborn talent for music. (约翰是一外5岁大的孩子,有着天生的音乐才能。) 2、先行词指人,在句中作宾语whom: His wife,whom you met at my home,was a teacher. (他的妻子，就是你在我家遇见的那个，是一位老师。) 3、先行词指物,在句中作主语或宾语which: Her house,which was built a hundred years ago,stood still in the earthquake.(那座房子在地震中依然耸立，它是一百多年前建造的。) 注意：无论先行词指人或者指物,在句中作主语或者作宾语，非限制性定语从句的引导词都不能用that。 4、先行词在句中作定语，无论指人或者指物,引导词都用whose: The girl,whose name is Kate,is the top of the students in our school.(那个女孩是我们学校最优秀的学生，她的名字叫Kate。) The book,whose cover is red,is mine.(封面是红色的那本书是我的。) 5、先行词指物，在句中作时间状语用when： The sports meeting will be put off till next month,when we will have made all the preparations.(运动会将被推迟到下个月，那时我们做好一切准备。) 6、The next day we arrived in New York,where we were inerviewed on the radio.（第二天我们到达纽约，在那里我们接受了电台的采访。） 7、如果先行词作介词的宾语，先行词指人，介词提前的结构是：介词＋whom；先行词指物，介词提前的结构是：介词＋which: President Wilson,with whom he had not the same intimate relations,is treated much less sympathetically.(威尔逊总统与他没有同样的亲密关系，所以就没有被很同情地对待。) The Second World War,in which millions of people were killed,ended in 1945.(第二次世界大战造成数百万人的死亡，于1945年结束。) 8、as也可以引导定语从句，常与such连用： Such people as you describe are rare nowadays.(象你所描绘的那种人现在已经很少见了。) Let's disscuss only such questions as concern us.(让我们只讨论那些和我们有关的问题吧。) 注意：the same that+从句，意思是：正是那一个人或物；the same as+从句，意思是：就像某个人或物： He is the same man that you are looking for.(他就是你要找的那个人。) He is the same man as you met in the street.(他很象你昨天在街上遇见的那个人。实际上并不是那个人。) This is the same pen that I lost yesterday.(这就是我昨天丢失的那支笔。) This is the same pen as I lost yesterday.(这很像昨天我丢失的那支笔。)
where在定语从句中引导的先行词 一、where定语从句修饰抽象名词point You reach a point where medicine can’t help. 你已到了药物无法治疗的地步。The crisis has reached a point where the receiver will have to be called in. 危机已达到非把破产管理人叫来不可的地步。 We have reached a point where a change is needed. 我们到了必须改一改的地步。 注：有时point也可以是具体的地点： Let the point where AB cuts CD be called E. 设AB线与CD线的相交点为E。The accident happened at the point where the A15 joins the M1. 事故发生在A15与M1交叉的十字路口。 二、where定语从句修饰抽象名词case There are cases where the word “mighty” is used as an a dverb. 在一些情况下，mighty一词可用作副词。 Today, we’ll discuss a number of cases where beginners of English fail to use the language properly. 今天，我们将讨论一些英语初学者对英语使用不当的问题。 三、where定语从句修饰抽象名词activity Those successful deaf dancers think that dancing is an activity where sight matters more than hearing. 那些失聪的成功舞蹈演员们认为，舞蹈是一种让人看胜过让人听的活动。 四、where定语从句修饰抽象名词situation He got into a situation where it is hard to decide what is right and wrong. 他陷入一种难以分辨是非的局面。 If you risk something important, you cause it to be in a dangerous situation where you might lose it. 你如果拿重要的东西去冒险，那你就是将它置于一种可能会失去它的危险境地。 五、where定语从句修饰抽象名词position
which引导的定语从句的用法 WHICH可以引导定语从句，修饰表示事物的先行词，在定语从句中充当主语、宾语或者表语。例如：HEWASREADINGABOOK， WHICHWASABOUTWAR.他正在读一本关于战争的书。（关系代词WHICH在修饰BOOK的定语从句中充当主语。） HEWASREADINGABOOK，WHICHHEHADBOUGHTFROMLONDON.他正在读一本书，这本书是从伦敦买回来的。（关系代词WHICH在修饰BOOK的定语从句中充当宾语。） WHICH引导非限定性定语从句时有一个特殊用法，即它所引导的非限定性定语从句修饰主句中更多的部分甚至整个主句（这时被定语从句所修饰的“先行词”要作广义理解），WHICH仍在定语从句中作主语、宾语或表语。例如：HESETFREETHEBIRDSHAPPILY， WHICHWASACELEBRATIONFORHISSUCCESS.他开心地把鸟放了，这是对他成功的一种庆祝。 把非限定性定语从句“WHICHWASACELEBRATIONFORHISSUCCESS”的先行词视为主句中的“THEBIRDS”显然不符合整句的语境，被 “WHICHWASACELEBRATIONFORHISSUCCESS”所修饰的是整个主句，WHICH所引导的这类特殊的非限定性定语从句对主句所叙述的情况进行某种意义的补充说明，WHICH常可译为“这一点，这件事”。 ［考题1］ YOUCANFINDWHATEVERYOUNEEDATTHESHOPPINGCENTRE， ____ISALWAYSBUSYATTHEWEEKEND.（2006上海春） A.THAT B.WHERE C.WHAT D.WHICH ［答案］D
介词+关系代词引导的定语从句 “介词+关系代词”引导的定语从句是定语从句的一种复杂形式，这类定语从句的关系代词主要有which ,whom , whose , 它们既可以引导限定性定语从句，也可以引导非限定性定语从句。关系代词前该选用什么样的介词，要根据不同的语境、习语、惯用法等来决定。一．介词选择的主要标准 1.介词与定语从句的先行词是一种习惯性搭配 Human facial expressions differ from those animals in the degree to which they can be controlled on purpose.人类的面部表情和动物的面部表情就可控制的程度来说是不一样的。( to a degree ) The English play in which my students acted at the New Year’s party was a great success.那场在新年晚会上我学生参加表演的英语剧很成功。( in the play ) The schools themselves admit that not all children will be successful in the jobs for which they are being trained.学校本身承认，并不是所有的孩子都能在他们所接受的培训的职业成功。( be trained for the job ) 2.介词与定语从句中的动词是一种习惯性搭配 Who is the man with whom our teacher is shaking hands? 我们的老师与之握手的那个男士是谁？( shake hands with sb. ) Last month , part of Southeast Asia was struck by floods , from whose effects the people are still suffering. 上个月，东南亚的部分地区发生洪水，人们还在遭受着洪水所带来的影响。(suffer from sth. ) 3.介词与定语从句中的形容词构成一种习惯性的搭配 Ours is a beautiful country , of which we are greatly proud . 我们的国家是一个美丽的国家，我们为之感到很自豪。( be proud of ) The woman to whom Spielberg is married is an actress. 同斯皮尔伯格结婚的女人是一位演员。( be married to ) The woman to whom he was engaged was a doctor. 他与之订婚的那个女士是位医生。(be engaged to ) 4.有时关系代词前用什么介词，要根据句子的意思来决定，此时不但要注意其前的搭配，也要注意其后的搭配 I was a woman running toward me in the dark. Before I could recognize who she was, she had run back in the dark.Before I could recognize who she was , she had ran back in the direction from which she had come.看见一位妇女在黑暗中像我走来，我还没来得及认清她是谁，她已经从她来的方向跑回去了。（如果仅注意先行词，很容易受习惯心里的影响而使用in this direction 的搭配，但考虑到语境后的come ，则应该使用from。） He was educated at the local high school, after which he went on to Beijing University. 他在当地一所高中上学，之后他上了北京大学。（after which 的意思就是“在当地一所高中接受完教育之后”）。 In the office I never seem to have time until after 5:30 pm. by which time many have got home.在 办公室我好像总是没时间，只有等到下午五点半，而那个时候大家都已经回家了。（此句不能受at 5:30 pm 的通常表达的影响而选用介词at, 而应该依据整个句子的语意来确定介词。）5.表示“所有格”或“整体与部分关系”时，用介词of The journey around the world took the old sailor nine months, of which the sailing time was 226 days.这次环球旅行老水手用了9个月，其中航行的时间是226天。 The factory produces half a million pairs of shoes every year, 80% of which are sold abroad. 这个工厂每年生产50万双鞋，其中的（指50万双鞋）80%销往海外。 I was told that there were about 50 foreign students studying Chinese in the school, most of whom
when，where，why引导的定语从句 when，where，why作为定语从句的引导词，总称为关系副词。下面用句子合并的方法分析它们的使用。 一、where引导的定语从句 请分析下面两个简单句： 句①I know a garden. 句②You can find wild strawberries there. 把句②变为句①的定语从句，句①中的agarden做定语从句的先行词。在句②中there指句①中提到的agarden也就是定语从句的先行词，there在句中做地点状语，因此要用where 引导定语从句，代替句②中的there，也就是说there就不能出现在定语从句中了。由此得到句③I know a garden where you can find wild strawberries. 句②还可以写作句④You can find wild strawberries in it(it指句①中的garden，“在花园中”要使用介词短语in the garden)。把句④变为句①的定语从句，因为it做介词in 的宾语，先行词是agarden，指物。在这种定语从句中介词常常提到定语从句的开始，这时关系代词只能使用which替代it，it就不能在定语从句中出现了。由此得到句⑤即：I know a garden in which you can find wild strawberries. 请把下面每组的两句话合并为一句，把第二句话变为第一句的定语从句。 第一组： This is the village. I was born there. →This is the village where I was born. 第二组： The lab is not far from here. The chemist often does experiments there. →The lab where the chemist often does experiments is not far from here.
W h e r e引导从句的用法总结-标准化文件发布号：（9556-EUATWK-MWUB-WUNN-INNUL-DDQTY-KII
Where引导从句的用法总结 Where引导从句分为引导定语从句、状语从句、名词性从句三种，用法如下： 1.where引导定语从句—形容词性从句 where引导定语从句时，其先行词是表示地点的名词，where 引导的从句修饰先行词，Where是关系副词，它在定语从句中作地点状语，此时 where 相当于at/in/on+which。如： This zoo is not the only place where the animal can be seen. 这个动物园并不是唯一能够看到这种动物的地方。 She’s got herself into a dangerous situation where she’s likely to lose her life. 她将自己置于了危险的境地，而且很有可能丢掉性命。 2. where引导状语从句—副词性从句 where引导状语从句时，Where前没有表示地点的先行词，Where是从属连词，Where引导的从句修饰主句的谓语动词，它相当于 in/at the place where。如： My father grew up where he was born. 我父亲是在他出生的地方长大的。 Take him where it is safe. 把他带到安全的地方去。 3.where引导名词性从句—名词性从句 where引导的名词性从句主要有宾语从句、表语从句、主语从句以及同位语从句，此时where相当于the place where，可译为：“……的地 方”,where是疑问副词。如： Can you tell me where you found it? 你能告诉我你是在哪儿找到它的吗？ That’s where I was when the accident happened. 那就是事故发生时我所在的地方。
一 先行词指物的特殊情况： 一．必须用that的情况： 1. 先行词被序数词、形容词的最高级修饰时， eg. This is the first job that I have taken up. This is the most interesting novel that I have ever read. 2. 先行词是不定代词,something somebody nothing anything 等或是all little much 时， eg. There is something that I want to tell you. 3. 先行词被all/ any/ every/ each/ few /little/ no/ some/ much/ only/ none/ both/ either/ neither 等修饰时， eg. I have read all the books that you lent me. 4. 先行词被the only, the last, the very…修饰时, eg. This is the only method we can use. 5. 先行词又有人又有物时， eg. They talked about things and persons that they know in the school. 6. 主句以who 或which开头时， eg. Who is the old man that speak to you just now ? 二、修饰物时只用which不用that的情况 1，引导非限制性定语从句时。例如： Bamboo is hollow, which makes it light.竹子是空心的，这使得他很轻。2，当关系词前有介词时。例如： This is the room in which Chairman Mao once lived.这就是毛主席曾经住过的地方。 3，在一个句子中有两个定语从句，其中一个定语从句的关系代词用了that, 另一个宜用which。例如： Let me show you the novel that I borrowed from the library which was newly open to us.我来给你看我从新开的图书馆里借来的那本小说。 4、当关系代词后面有插入语时。例如： Here is the English grammar which, as I have told you, will help improve your English.这就是我跟你说过的会有助于你学好英语的那本英语语法书。5、先行词为that时。例如： The clock is that which can tell us the time.钟是报时的装置。 三、修饰人时只用who不用that的情况 1、先行词为one, ones, anyone, those指代人时。如： The person I want to learn from is one who studies hard and works well.我最羡慕的是学习勤奋，工作出色的人。
如何选择定语从句的引导词? *限制性定语从句 限制性定语从句修饰先行词，对先行词起修饰作用，紧接先行词之后，无逗号，若省去，原句意思不完整。引导定语从句的关系代词有who,whom,whose,which,that等。who,whom,whose用于指人，whose有时也可指物，相当于of which；which用于指物；that 既可指人也可指物，但只用于限制性定语从句中。关系代词除了引导定语从句，替代先行词外，还在从句中担任主语、宾语、定语等。 *非限制性定语从句 非限制性定语从句既可修饰先行词，也可修饰整个主句，起补充说明作用，与主句之间有逗号隔开，若省去，原句意思不受影响。不可用that引导非限制性定语从句。关系词不可省 略。 一、定语从句的引导词有关系代词who， whom，whose，which，that， as；关系副词when，where，why。定语从句中引导词的选用主要看先行词在定语从句中作什么成分或者是定语从句中缺什么成分。 1．定语从句中缺主语，修饰人时用who ／that，修饰物时用which ／that引导。如： Is this the factory which ／that makes TV sets？ The man who ／that visited our school is from Australia． 2．从句中缺宾语，修饰人时用 who ／whom ／that或省略引导词；修饰物时用which ／that 或省略引导词。如： Gone are the days which ／that we spent together in the village． He is the man who ／whom ／that I think to be worthy of our praise． 3．从句中缺时间状语，用when或介词＋which引导。如： The day finally came when ／on which I was given a job． We'll put off the outing until next week，when we won't be so busy． 4．从句中缺地点状语，用where或介词＋which引导。如： Please put the letter on the desk where ／on which he can easily find it． 5．从句中缺原因状语或先行词是 reason时，引导词用why ／for which ／ that。如： This is the reason why ／for which ／ that he didn't come to the meeting．
when/where/why引导的定语从句的用法 when， where， why属于关系副词，都在其引导的定语从句中充当状语，其具体用法如下： 1. 关系副词 when引导定语从句（包括限定性定语从句和非限定性定语从句）修饰表示时间的先行词，在定语从句中充当时间状语。例如： I still remember the day when I first met Jennifer.我仍然记得第一次见到詹妮弗的那一天。// Next month, when you’ll spend your summer holidays in your hometown, is approaching. 下个月即将来临，届时你们将在家乡度暑假。 2. 关系副词where引导定语从句（包括限定性定语从句和非限定性定语从句）修饰表示地点的先行词，在定语从句中充当地点状语。例如： This is the office where he worked. 这就是他工作过的办公室。// She is going to live in Macao, where she has some close friends. 她要到澳门去定居，在那里她有几个密友。 3. 关系副词why引导限定性定语从句修饰先行词reason，在定语从句中充当原因状语。例如： I don’t know the reason why he came so late. 我不知道他来得那么晚的原因。// That is the reason why I don’t want to go. 那就是我不想去的理由。// He didn’t tell me the reason why he was so upset.他没有告诉我他为什么那样心烦意乱。 注意：关系代词与关系副词之间并非毫无关联，两者之间存在密切的联系。在备考中尤其要注意以下几点： 1. 很多情况下关系副词用“介词＋which/whom”来代替，其中的介词由先行词或定语从句中谓语动词的形式来决定，例如： The day when I met the famous pop star was the greatest day of my life. = The day on which I met the famous pop star was the greatest day of my life. 见到这位著名歌星的那天是我一生中最重要的日子。 I shall never forget those years when I lived with her. = I shall never forget those years during which I lived with her. 我将永远不会忘记我跟她生活的那些岁月。 This is a hall where the medical conference will be held. = This is a hall in which the medical conference will be held. 这是礼堂，医学会议将在此召开。 2. 并非先行词表示时间或地点时都分别用when或where来引导相应的定语从句，若关系词在修饰表示时间或地点的先行词的定语从句中充当主语、宾语等而不是状语时，需用which或that 引导相应的定语从句。例如： Do you still remember the days which/that we spent together in school? 你还记得我们一起在学校度过的那些日子吗？ 先行词the days表时间，但是其定语从句的引导词在定语从句中作宾语而不是状语，因此不能用when而应该用which或that。 3. that有时可以代替定语从句中的关系副词when， where， why，且that常可以省略，例如： This is the time （when/that） he arrived. 这是他到达的时间。 ［考题1］ We are living in an age ____ many things are done on computer. （2003北京春） A. which B. that C. whose D. when ［答案］ D ［解析］本题中下划线处所引导的限定性定语从句修饰表示时间的先行词age，其引导词在该定语从句中充当时间状语，因此只能填入关系副词when。 ［考题2］ The film brought the hours back to me ____ I was taken good care of in that far*9鄄away village. （2001） A. until B. that C. when D. where ［答案］ C ［解析］本题中下划线处所引导的限定性定语从句修饰表示时间的先行词hours，其引导词在该定语从句中充当时间状语，因此只能填入关系副词when。 ［考题3］ It was an exciting moment for these football fans this year, ____ for