定語(yǔ)從句（Attributive Clauses）在句中做定語(yǔ)，修飾一個(gè)名詞或代詞；被修飾的名詞,詞組或代詞即先行詞。定語(yǔ)從句通常出現(xiàn)在先行詞之后，由關(guān)系詞（關(guān)系代詞或關(guān)系副詞）引出。
關(guān)系代詞有：who, whom, whose, that, which等。
關(guān)系副詞有：when, where, why等。
☆ 關(guān)系代詞和關(guān)系副詞的選用取決于先行詞及它們?cè)诙ㄕZ(yǔ)從句中的語(yǔ)法成份
關(guān)系代詞 先行詞 在定語(yǔ)從句中充當(dāng)?shù)恼Z(yǔ)法成份
Who 人 主語(yǔ)
Whom 人 賓語(yǔ)
Whose 人或物 定語(yǔ)
Which 物 主語(yǔ)或賓語(yǔ)
That 人或物 主語(yǔ)或賓語(yǔ)
關(guān)系副詞 先行詞 在定語(yǔ)從句中充當(dāng)?shù)恼Z(yǔ)法成份
When 表時(shí)間的名詞 時(shí)間狀語(yǔ)
Where 表地點(diǎn)的名詞 地點(diǎn)狀語(yǔ)
Why 表原因的名詞 原因狀語(yǔ)
That用于表示時(shí)間、地點(diǎn)、方式、理由的名詞后取代when, where, why和"介詞+ which"可作關(guān)系副詞
1 關(guān)系代詞引導(dǎo)的定語(yǔ)從句
關(guān)系代詞所代替的先行詞是人或物的名詞或代詞，并在句中充當(dāng)主語(yǔ)、賓語(yǔ)、定語(yǔ)等成分。關(guān)系代詞在定語(yǔ)從句中作主語(yǔ)時(shí)，從句謂語(yǔ)動(dòng)詞的人稱和數(shù)要和先行詞保持一致。
1）who, whom, that
這些詞代替的先行詞是人的名詞或代詞，在從句中所起作用如下：
Is he the man who/that wants to see you?
他就是你想見的人嗎？（who/that在從句中作主語(yǔ)）
He is the man whom/ that I saw yesterday.
他就是我昨天見的那個(gè)人。（whom/that在從句中作賓語(yǔ)）
2) Whose 用來(lái)指人或物，(只用作定語(yǔ), 若指物，它還可以同of which互換）, 例如：
They rushed over to help the man whose car had broken down. 那人車壞了，大家都跑過(guò)去幫忙。
Please pass me the book whose (of which) cover is green. 請(qǐng)遞給我那本綠皮的書。
3）which, that
它們所代替的先行詞是事物的名詞或代詞，在從句中可作主語(yǔ)、賓語(yǔ)等，例如：
A prosperity which / that had never been seen before appears in the countryside. 農(nóng)村出現(xiàn)了前所未有的繁榮。（which / that在句中作賓語(yǔ)）
The package (which / that) you are carrying is about to come unwrapped. 你拿的包快散了。(which / that在句中作賓語(yǔ))
☆ 當(dāng)關(guān)系代詞在定語(yǔ)從句中充當(dāng)賓語(yǔ)時(shí)，可把關(guān)系代詞省掉
2 關(guān)系副詞引導(dǎo)的定語(yǔ)從句
關(guān)系副詞可代替的先行詞是時(shí)間、地點(diǎn)或理由的名詞，在從句中作狀語(yǔ)。
1）when, where, why
關(guān)系副詞when, where, why的含義相當(dāng)于"介詞+ which"結(jié)構(gòu)，因此常常和"介詞+ which"結(jié)構(gòu)交替使用，例如：
There are occasions when (on which) one must yield. 任何人都有不得不屈服的時(shí)候。
Beijing is the place where (in which) I was born. 北京是我的出生地。
Is this the reason why (for which) he refused our offer? 這就是他拒絕我們幫助他的理由嗎？
2）that代替關(guān)系副詞
that可以用于表示時(shí)間、地點(diǎn)、方式、理由的名詞后取代when, where, why和"介詞+ which"引導(dǎo)的定語(yǔ)從句，在口語(yǔ)中that常被省略，例如：
His father died the year (that / when / in which) he was born. 他父親在他出生那年逝世了。
He is unlikely to find the place (that / where / in which) he lived forty years ago. 他不大可能找到他四十年前居住過(guò)的地方。
3 判斷關(guān)系代詞與關(guān)系副詞
方法一： 用關(guān)系代詞，還是關(guān)系副詞完全取決于從句中的謂語(yǔ)動(dòng)詞。及物動(dòng)詞后面無(wú)賓語(yǔ)，就必須要求用關(guān)系代詞；而不及物動(dòng)詞則要求用關(guān)系副詞。例如：
This is the mountain village where I stayed last year.
I'll never forget the days when I worked together with you.
判斷改錯(cuò)
This is the mountain village where I visited last year.
I will never forget the days when I spent in the countryside.
This is the mountain village (which) I visited last year.
I'll never forget the days (which) I spent in the countryside.
方法二： 準(zhǔn)確判斷先行詞在定語(yǔ)從句中的成分(主、謂、賓、定、狀)，也能正確選擇出關(guān)系代詞/關(guān)系副詞。
例1. Is this museum ___ you visited a few days age?
A. where B. that C. on which D. the one
例2. Is this the museum ____ the exhibition was held.
A. where B. that C. on which D. the one
4 限制性和非限制性定語(yǔ)從句
1) 定語(yǔ)從句有限制性和非限制性兩種。限制性定語(yǔ)從句是先行詞不可缺少的部分，去掉它主句意思往往不明確；非限制性定語(yǔ)從句是先行詞的附加說(shuō)明，去掉了也不會(huì)影響主句的意思，它與主句之間通常用逗號(hào)分開，例如：
This is the house which we bought last month. 這是我們上個(gè)月買的那幢房子。（限制性）
The house, which we bought last month, is very nice.這幢房子很漂亮，是我們上個(gè)月買的。（非限制性）
2) 當(dāng)先行詞是專有名詞或物主代詞和指示代詞所修飾時(shí)，其后的定語(yǔ)從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，他曾經(jīng)是我的老師。
My house, which I bought last year, has got a lovely garden. 我去年買的的那幢房子帶著個(gè)漂亮的花園。
This novel, which I have read three times, is very touching. 這本小說(shuō)很動(dòng)人，我已經(jīng)讀了三遍。
3) 非限制性定語(yǔ)從句還能將整個(gè)主句作為先行詞, 對(duì)其進(jìn)行修飾, 這時(shí)as和which代替的是整個(gè)主句，相當(dāng)于and this或and that。As一般放在句首，which在句中。并且從句謂語(yǔ)動(dòng)詞要用第三人稱單數(shù)，例如：
He seems not to have grasped what I meant, (=and that)which greatly upsets me. 他似乎沒(méi)抓住我的意思，這使我心煩。
Liquid water changes to vapor, which (=and that) is called evaporation. 液態(tài)水變?yōu)檎羝�，這就叫做蒸發(fā)。
☆ As還在以下幾種結(jié)構(gòu)中作關(guān)系代詞引導(dǎo)定語(yǔ)從句
① the same as : He is just the same as he use to be.他還是和過(guò)去一樣
② such…as : Such passengers as survived the explosing were drowned.象那些在爆炸中幸免遇難的乘客都被淹死了
③ as…as : As many as we found were taken to the hospital.我們找到多少就送到醫(yī)院
☆關(guān)系代詞that和關(guān)系副詞why不能引導(dǎo)非限制性定語(yǔ)從句。
5 介詞+關(guān)系詞 (介詞前置：關(guān)系代詞如果在定語(yǔ)從句中充當(dāng)介詞的賓語(yǔ)，可把介詞前置到關(guān)系代詞的前面，形成介詞+關(guān)系代詞的結(jié)構(gòu))
1）介詞后面的關(guān)系代詞不能省略。
2）that前不能有介詞。
3）如果關(guān)系代詞是動(dòng)詞短語(yǔ)的賓語(yǔ)，動(dòng)詞短語(yǔ)的介詞不能前置
錯(cuò)誤用法：This is the girl of whom he will take care.
正確用法：This is the gril whom he will take care of
4）某些在從句中充當(dāng)時(shí)間，地點(diǎn)或原因狀語(yǔ)的"介詞+關(guān)系詞"結(jié)構(gòu)可以同關(guān)系副詞when 和where 互換。
This is the house in which I lived two years ago.
This is the house where I lived two years ago.
Do you remember the day on which you joined our club?
Do you remember the day when you joined our club?
☆另外還應(yīng)注意的是:
①way后常用that代替in which，也可省略that
I really don't like the way (that) he talks.
That was the way in which the old lady looked after us.
②of which起形容詞的作用，相當(dāng)于whose（用來(lái)指物）
They live in a house whose door (the door of which) opens to the south.
③相同的先行詞在表示不同的含義時(shí)，要根據(jù)其含義用不同的介詞。
I can't remember the age at which he won the prize.我記不起他獲得獎(jiǎng)金的年紀(jì)
That is the age in which people live in peace and happiness. 那正是人們生活在和平幸福的時(shí)期
age在前句中意為"年歲"，與at搭配，在后句中意為"時(shí)期"，與in搭配。
④先行詞或定語(yǔ)從句中的動(dòng)詞、形容詞要根據(jù)不同的具體語(yǔ)境選擇適當(dāng)?shù)慕樵~。 This is the bus on which the accident happened. 這是發(fā)交通意外的那輛巴士
This is the bus by which I came to this town. 這是我搭程去鎮(zhèn)上的巴士
6 Which和that 的選用
1）當(dāng)先行詞是不定代詞(everything , something , anything , littlt , much)時(shí)，只能用that
Is there anything that I can help you? 有什么我可以幫你的嗎？
2)當(dāng)先行詞被序數(shù)詞所修飾時(shí)，只能用that
This is the second book that was written by the writter. 這是那個(gè)作者寫的第二本書
3)當(dāng)先行詞被形容詞的最高級(jí)修飾時(shí)，只能用that
This is the best film that I have ever seen. 這是我所看過(guò)的最好的電影
4)當(dāng)先行詞前有限定詞(or , every , a few , noly , some , very等)修飾時(shí)，只能用that
This is the only film that I wanted to see. 那正是我唯一想看的電影
5）在there be句型中，只用that，不用which
6）先行詞既有人，又有物時(shí)，只能用that
5)當(dāng)介詞前置時(shí)，只能用which(P5-2)
6)在非限制定語(yǔ)從句，只能用which(并在前用 ，號(hào)與主句隔開)
7 But引導(dǎo)的定語(yǔ)從句相當(dāng)于一個(gè)否定從句
There is no one but knows about the matter. 沒(méi)有人不知道這事
8定語(yǔ)從句和同位語(yǔ)從句的區(qū)別
1）同位語(yǔ)從句與前面的名詞是同位關(guān)系，即說(shuō)明它前面名詞的內(nèi)容；而定語(yǔ)從句與前面的名詞是修飾與被修飾關(guān)系，即限定它前面的名詞范圍，或補(bǔ)充一些情況。
The news that l hove passed the exam is true．我通過(guò)了考試這一消息是真的。（同位語(yǔ)從句，即從句所表達(dá)的意思就是前面名詞的內(nèi)容。）
The news that he told me just now is true．他剛才告訴我的消息是真的。 （定語(yǔ)從句，從句對(duì)前面名詞起修飾限制作用，即“他告訴我的”那個(gè)消息，而不是別的消息。）
2) 引導(dǎo)同位語(yǔ)從句的that是連詞，在從句中不充當(dāng)任何成份，而引導(dǎo)定語(yǔ)從句的that是關(guān)系代詞，除起連接作用外，還在從句中充當(dāng)主語(yǔ)、賓語(yǔ)或表語(yǔ)等。如：
The idea that computers can recognize human voices surprises many people. 計(jì)算機(jī)能夠識(shí)別人的聲音的想法使許多人感到驚奇。（that在從句中不充當(dāng)任何成份。）
The idea that he gave surprises many people． 他提出的觀點(diǎn)令許多人感到吃驚。 �。╰hat在從句中作gave的賓語(yǔ)。）
定語(yǔ)從句練習(xí)
1易混易錯(cuò)定語(yǔ)從句練習(xí)
有些定語(yǔ)從句方面的題，如果不仔細(xì)審題、不弄清句意和句子結(jié)構(gòu)，就很可能把一些似是而非的東西搞混，從而降低解題的準(zhǔn)確性。要想解決這個(gè)問(wèn)題就得從準(zhǔn)確理解句意和理清句子結(jié)構(gòu)入手。
1．①Who lives in the house ＿＿＿ windows face south？
② Who lives in the house ＿＿＿ the windows face south？
A．whose B．which C．of which D．that
解析：答案是①A②C。在句①中windows前沒(méi)有定冠詞，它所缺的是定語(yǔ)形容詞，而whose的用法就是在定語(yǔ)從句中作定語(yǔ)且既可指人也可指物。在句②中windows前有定冠詞，所以要填的內(nèi)容不能作前置定語(yǔ)，又因?yàn)椤胺孔拥拇皯簟庇糜⒄Z(yǔ)表達(dá)是“the windows of the house”，故可用of which引導(dǎo)定語(yǔ)從句。
2．①Is this factory ＿＿＿ you visited last year？
②Is this the factory ＿＿＿＿＿＿you visited last year？ A．that B．of which C．the one D．wher
解析：答案是①C②A。在句①中factory前沒(méi)有定冠詞，這說(shuō)明this是作它的定語(yǔ)。這樣，句中就缺少表語(yǔ)，也就是說(shuō)定語(yǔ)從句缺少先行詞，故選C（the one后省略了that）。在句②中this作主語(yǔ)，the factory作表語(yǔ)，其后帶一個(gè)that引導(dǎo)的定語(yǔ)從句，故選A
3．①John is the only one of the students who＿＿＿French．
②John is one of the students who ＿＿＿ French．
A．know B．knows C．knowing D．known
解析：答案是①B②A。在句①中的句意是“約翰是學(xué)生中唯一懂法語(yǔ)的那個(gè)學(xué)生”，其重心是the only one故從句謂語(yǔ)動(dòng)詞應(yīng)與one一致。在句②中的句意是“約翰是懂法語(yǔ)的學(xué)生中的一個(gè)”，也就是“懂法語(yǔ)的學(xué)生不止一個(gè)，約翰只是其中之一”，其重心是the students，故從句中謂語(yǔ)動(dòng)詞應(yīng)與students一致。
4．①When I have trouble，he is the only one ＿＿＿I can ask for help．
②When I have trouble，he is the only one ＿＿＿I can go for help．
A．whom B．to whom C．which D．to who
解析：答案是①A②B。句①中，在結(jié)構(gòu)上所要添的內(nèi)容在從句中作ask的賓語(yǔ)其句式是ask sb．for sth．，故用whom引導(dǎo)定語(yǔ)從句。在句②中，go是不及物動(dòng)詞其句式是go to sb．for sth．，故用to whom引導(dǎo)定語(yǔ)從句。
5．①This is the knife ＿＿＿I usually cut my pencil．
②This is the knife ＿＿＿I usually use to cut my pencil．
A．with which B．which C．by which D．with that
解析：答案是①A②B。在句①中，定語(yǔ)從句的句式是cut my pencil with the knife，故用with which引導(dǎo)定語(yǔ)從句。在句②中，定語(yǔ)從句的結(jié)構(gòu)是use the knife to cut my pencil，故用which引導(dǎo)定語(yǔ)從句。
6．①Last summer he went to Beijing，＿＿＿ he had visited twice．
②Last summer he went to Beijing，＿＿＿ he visited a lot of places of interest．
A．which B．where C．that D．there
解析：答案是①A或B②B。在句①中，所要填的內(nèi)容在定語(yǔ)從句中應(yīng)作visited的賓語(yǔ)，故應(yīng)填關(guān)系代詞which或that。在句②中，所要填的內(nèi)容在定語(yǔ)從句中作地點(diǎn)狀語(yǔ)，故應(yīng)填關(guān)系副詞where。 7．①He still remember the days ＿＿＿we spent together．
②He still remember the days ＿＿＿we spent the summer holidays together．
A．which B．when C．where D．that
解析：答案是①A②B。在句①中，所要填的內(nèi)容在定語(yǔ)從句中應(yīng)作spent的賓語(yǔ)，故應(yīng)填關(guān)系代詞which。在句②中，所要填的內(nèi)容在定語(yǔ)從句中作時(shí)間狀語(yǔ)，故應(yīng)填關(guān)系副詞when。
8．①The reason ＿＿＿ he gave us was that his car broke down on the way．
②The reason ＿＿＿ he was late was thathis car broke down on the way．
A．why B．which C．how D．what
解析：答案是①B②A。在句①中，所要填的內(nèi)容在定語(yǔ)從句中應(yīng)作gave的賓語(yǔ)，故應(yīng)填關(guān)系代詞which。在句②中，所要填的內(nèi)容在定語(yǔ)從句中作原因狀語(yǔ)，故應(yīng)填關(guān)系副詞why。
2高考真題練習(xí)
1. (’03北京24)York, ________ last year ,is a nice old city.
A. that I visited B. which I visited C. where I visited D. in which I visited
【解析】 考查非限制性定語(yǔ)從句。是用關(guān)系代詞或者是用關(guān)系副詞引導(dǎo)定語(yǔ)從句，要根據(jù)他們?cè)诙ㄕZ(yǔ)從句中的成份來(lái)確定，visit是及物動(dòng)詞，后面需要用關(guān)系代詞作賓語(yǔ)，排除C，D。that 不用于非限制性定語(yǔ)從句中，排除A。答案為B。
2.(’03上海41)I can think of many cases _________ students obviously knew a lot of English words and expressions but couldn't write a good essay.
A. why B. which C. as D. where
【解析】 考查定語(yǔ)從句。此句的先行詞是many cases，單看從句與先行詞的關(guān)系應(yīng)是：students obviously knew a lot of English words and expressions but couldn't write a good essay in many cases.因此應(yīng)用in which或where引導(dǎo)定語(yǔ)從句，備選答案中沒(méi)有in which，于是選where。答案為D。
3. (’03上海44)There is a new problem involved in the popularity of private cars _________ road conditions need_________.A. that ...to be improved B. which...to be improved C. where ...improving D .when...improving
【解析】 考查同位語(yǔ)從句。因?yàn)橄刃性~在從句中不作任何成份，因此用關(guān)系詞that，故B、C、D均不正確。對(duì)于第2個(gè)空，need既可作實(shí)義動(dòng)詞，又可作情態(tài)動(dòng)詞。作實(shí)義動(dòng)詞時(shí)后跟動(dòng)詞不定式，即need to do sth，另外 road conditions與improve之間是被動(dòng)關(guān)系，因此是need to be improved(need to be done=need doing)。譯文：私家車受歡迎所涉及到的新問(wèn)題是道路狀況需要改善。答案為A。
4.(’03北京春季31)We are living in an age ________ many things are done on computer.
A. which B. that C. whose D. when
【解析】 這是定語(yǔ)從句，先行詞是age,表時(shí)間，所以用when引導(dǎo)。答案為D。
5.(’03安徽春季24)People have heard what the President has said; they are waiting to see _________he will do.
A. how B. what C. when D. that 【解析】 考查賓語(yǔ)從句。what引導(dǎo)賓語(yǔ)從句，在從句中作do的賓語(yǔ)。排除A、C、D。答案為B。
6.(’03上海春季32)_________ has been announced ,we shall have our final exams next month.
A. That B. As C. It D. What
【解析】 as引導(dǎo)定語(yǔ)從句表示“正如……”，并非某個(gè)名詞或代詞是先行詞，而是整個(gè)主句所表達(dá)的內(nèi)容是定語(yǔ)從句所修飾的。譯文：正如所宣布的那樣，下月我們將進(jìn)行期末考試。答案為B。
7.(’02北京22)We will be shown around the city :schools ,museums ,and some other places, ________ other visitors seldom go. A. what B. which C. where D. when
【解析】 這是一個(gè)定語(yǔ)從句，先行詞是places，表示地點(diǎn)，非限定性定語(yǔ)從句中缺少狀語(yǔ)，因此用where來(lái)引導(dǎo)定語(yǔ)從句，故要填where。譯文：我們被帶領(lǐng)著參觀了這座城市：學(xué)校、博物館和其他一些游人很少去的地方。答案為C。 8.(’02上海31)Alec asked the policeman _______ he worked to contact him whenever there was an accident.
A. with him B. who C. with whom D. whom
【解析】 這是一個(gè)定語(yǔ)從句，the policeman是先行詞。work是不及物動(dòng)詞，“work with sb”意為“與某人共事”，所以定語(yǔ)從句應(yīng)為with whom he worked。譯文：無(wú)論何時(shí)發(fā)生事故時(shí)，Alec要求與他一起工作的警察與他聯(lián)系。答案為C。
9.(’02上海35)There's a feeling in me _______we'll never know what a UFO is-not ever.
A. that B. which C. of which D. what
【解析】 同位語(yǔ)從句that we'll never know what a UFO is-not ever作a feeling的同位語(yǔ)，解釋a feeling的具體內(nèi)容。that連接同位語(yǔ)從句時(shí)，只起連接作用不作從句的任何成分。譯文：我有一個(gè)這樣的感覺(jué)，我們不會(huì)知道什么是UFO--永遠(yuǎn)不會(huì)。答案為A。
10.(’02京、蒙、皖春季35)The famous basketball star, ______tried to make a comeback, attracted a lot of attention.
A. where B. when C. which D. who
【解析】 先行詞是The famous basketball表示人，非限定性定語(yǔ)從句中缺少主語(yǔ)，因此要填who。who在定語(yǔ)從句中作主語(yǔ)。答案為D。
11.(’02上海春季35)Is this the reason _______at the meeting for his carelessness in his work?
A. he explained B. what he explained C. how he explained D. why he explained
【解析】 the reason后接定語(yǔ)從句。因?yàn)橄刃性~the reason作explained的賓語(yǔ)，用that或which引導(dǎo)定語(yǔ)從句在從句中作賓語(yǔ)時(shí)省略。譯文：這就是他在會(huì)議上對(duì)他為什么在工作上粗心大意的理由所作的解釋嗎?答案為A。
12.(’01全國(guó)22)The film brought the hours back to me_________I was taken good care of in that far-away village.
A. until B. that C. when D. where
【解析】 when引導(dǎo)定語(yǔ)從句(the hours的定語(yǔ))，修飾先行詞the hours,when在從句中作狀語(yǔ)。譯文：這部電影使我回憶起我在那偏遠(yuǎn)的村莊得到無(wú)微不至的照顧的時(shí)光。答案為C。
13.(’01上海35)Information has been put forward ________ more middle school graduates will be admitted into universities. A. while B. that C. when D. as
【解析】 這是一個(gè)同位語(yǔ)從句。that引導(dǎo)從句作information的同位語(yǔ)，解釋information的具體內(nèi)容。注意：that和what引導(dǎo)名詞性從句(主語(yǔ)、賓語(yǔ)、表語(yǔ)和同位語(yǔ)從句)的區(qū)別：that引導(dǎo)名詞性從句，只起引導(dǎo)作用，在從句中不作成分。that引導(dǎo)賓語(yǔ)從句時(shí)，that可省略，而在其他三個(gè)從句中，that雖不作成份，一般也不省略；what在這四個(gè)名詞從句中一定作成分，作主語(yǔ)、賓語(yǔ)、表語(yǔ)或補(bǔ)語(yǔ)。譯文：有消息說(shuō)，更多的中學(xué)畢業(yè)生將進(jìn)入大學(xué)。答案為B。
14.(’01上海37)He's got himself into a dangerous situation ________ he is likely to lose control over the plane.
A. where B. which C. while D. why
【解析】 這是一個(gè)定語(yǔ)從句。先行詞是a dangerous situation。因?yàn)閟ituation的意思是“位置”，所以要填where。譯文：他已陷入飛機(jī)似乎失去控制的危險(xiǎn)境地。答案為A。
15.(’01京、蒙、皖春季11)John said he’d been working in the office for an hour, ______was true.
A. he B. this C. which D. who
【解析】 考查非限定性定語(yǔ)從句。which引導(dǎo)非限定性定語(yǔ)從句，修飾整個(gè)主句所表達(dá)的內(nèi)容。答案為C。
16.(’01上海春季30)Have you seen the film “Titanic”, ________leading actor is world famous?
A. its B. it's C. whose D. which
【解析】 這是一個(gè)定語(yǔ)從句，因?yàn)橄刃性~the film “Titanic”和leading actors是所屬關(guān)系，所以要填寫whose。答案選C。
17.(’00全國(guó)17題)Dorothy was always speaking highly of her role in the play, _________,of course , made the others unhappy. A．who B．which C．this D．what
【解析】 這是一個(gè)非限制性定語(yǔ)從句，which指代Dorothy夸大自己在劇中角色的作用這件事。答案選B。
18.(’00上海28)Recently I bought an ancient Chinese vase, ________ was very reasonable. A. which price B. the price of which C. its price D. the price of whose
【解析】 這是一個(gè)非限定性定語(yǔ)從句。根據(jù)句意可知是花瓶的價(jià)格。在定語(yǔ)從句中表示“誰(shuí)的”，可以這樣表達(dá)，如：I live in the room whose windows face south(名詞前沒(méi)有冠詞，用whose)=I live in the room the windows of which face south(如果名詞前有冠詞就用of which)，答案為B。
19.(’00上海30)She found her calculator ________ she lost it.
A. where B. when C. in which D. that
【解析】 這是一個(gè)地點(diǎn)狀語(yǔ)從句，意思是“東西是在丟的地方找到的�！眎n which用于定語(yǔ)從句中，其前必須有先行詞。這個(gè)句子中沒(méi)有先行詞，所以不能填in which。答案為A。
20.(’00上海35)Greenland, ________island in the world, covers over two million square kilometres.
A. it is the largest B. that is the largest C. is the largest D.the largest
【解析】 有些考生把這個(gè)句子理解成了定語(yǔ)從句，誤選了選項(xiàng)B。如果這是非限制性定語(yǔ)從句，必須用關(guān)系代詞which引導(dǎo)，而不用that，即which is the largest islad in the world。實(shí)際上，the largest island in the world作Greenland的同位語(yǔ)。答案選D。
21.(’00京、皖春季10)The result of the experiment was very good, ________we hadn't expected.
A. when B. that C. which D. what 【解析】 這是一個(gè)非限制性定語(yǔ)從句，which在定語(yǔ)從句中作hadn't expected的賓語(yǔ)。這句話的意思是“實(shí)驗(yàn)的結(jié)果很好，是沒(méi)有預(yù)想到的”。答案選C。
22.(’00京、皖春季16)It was an exciting moment for these football fans this year,________for the first time in years their team won the World Cup.
A. that B. while C. which D. when 【解析】 根據(jù)句子的結(jié)構(gòu)可以排除that和which。再根據(jù)所提供的情境It was an exciting moment可以看出是一個(gè)時(shí)間狀語(yǔ)從句。注意：while的意思是during the time that表示一段時(shí)間內(nèi)；when的意思是of that time that表示某個(gè)時(shí)刻，與an exciting moment相對(duì)應(yīng)。這句話的意思是“當(dāng)他們的隊(duì)首次進(jìn)入世界杯時(shí)，對(duì)于這些足球迷來(lái)說(shuō)是今年的一個(gè)令人激動(dòng)的時(shí)刻”。答案為D。
23.(’99年全國(guó)19)Carol said the work would be done by October, ________personally I doubt very much.
A. it B. that C. when D. which 【解析】 在這個(gè)非限制性定語(yǔ)從句中，關(guān)系代詞which代替Carol所說(shuō)的話。這句話的意思是“Carol說(shuō)工作將在十月完成，我個(gè)人對(duì)此表示懷疑�！贝鸢高xD。