（一）定義及相關(guān)術(shù)語
1.定語從句：修飾某一名詞或代詞的從句叫定語從句。定語從句一般緊跟在它所修飾的先行詞之后赁温。
2.先行詞：被定語從句修飾的詞叫先行詞坛怪。
3.關(guān)系詞：引導定語從句的詞叫關(guān)系詞。關(guān)系詞有關(guān)系代詞和關(guān)系副詞股囊。關(guān)系代詞有that, which, who, whom, whose, as等袜匿；關(guān)系副詞有when, where, why等。
關(guān)系詞通常有三個作用：
A稚疹、引導定語從句居灯；B、代替先行詞内狗；C穆壕、在定語從句中擔當一個成分。
The man who is shaking hands with my father is a policeman.?
該句中其屏，who is shaking hands with my father是定語從句喇勋，修飾先行詞the man，"who"是引導定語從句的關(guān)系詞偎行，代替先行詞the man川背，在定語從句中作主語贰拿。
（二）關(guān)系代詞引導的定語從句
1.who 指人，在定語從句中作主語熄云。
The boys who are playing football are from Class One.
?正在踢足球的男孩是一班的膨更。
Those who want to go to the museum must be at the school gate at 7 tomorrow morning.?
想去博物館的人必須在明晨7點到大門口集合。
Yesterday I helped an old man who had lost his way.
?昨天我?guī)椭艘晃幻月返睦先恕?/p>
That is the teacher who teaches us physics.?
那就是教我們物理的老師缴允。
2.whom 指人荚守，在定語從句中做賓語，沉钒悖可省略矗漾。
Mr Liu is the person ( whom ) you talked about on the bus.?
劉先生就是你們在公共汽車上談?wù)摰哪莻€人。
Li Ming is just the boy ( whom ) I want to see.?
李明正是我想要見的男孩薄料。
The professor ( whom ) you are waiting for has come.
?你正在等的教授已經(jīng)來了敞贡。
The girl ( whom ) the teacher often praises is our monitor.?
老師經(jīng)常表揚的那個女孩是我們的班長。
注意：關(guān)系代詞whom 在口語或非正式文體中成阒埃可用who 來代替誊役，也可省略。
The man ( whom / who )you met just now is my old friend.
3.Which 指物谷市，在定語從句中做主語或賓語蛔垢，做賓語時常可省略迫悠。
Football is a game which is liked by most boys.
?足球是大多數(shù)男孩所喜歡的運動啦桌。
The factory which makes computers is far away from here.?
制造計算機的那家公司離這很遠。
He likes to read books which are written by foreign writers.?
他喜歡外國作家寫的書及皂。
The house which is by the lake looks nice.
?湖邊的那幢房子看上去很漂亮甫男。
This is the pen ( which ) he bought yesterday.
?這是他昨天買的鋼筆。
The film ( which ) they went to see last night was not interesting at all.?
他們昨晚看的電影一點意思也沒有验烧。
4.That 指人時板驳，相當于who 或whom；指物時碍拆，相當于which若治。在定語從句中作主語或賓語，作賓語時掣谢欤可省略端幼。
The number of people that / who come to visit this city each year reaches one million.?
每年來參觀這座城市的人數(shù)達一百萬。
Where is the man that / whom I saw this morning??
我今天早上看到的那個人在哪兒弧满？
The person that /whom you introduced to me is very kind.?
你介紹給我的那個人很友好婆跑。
The season that / which comes after spring is summer.?
春天以后的季節(jié)是夏季。
Yesterday I received a letter that / which came from Australia.
?昨天我收到了一封來自澳大利亞的信庭呜。
5.Whose 通常指人滑进，也可指物犀忱，在定語從句中做定語。
I visited a scientist whose name is known all over the country.?
我拜訪了一個全國知名科學家扶关。
He has a friend whose father is a doctor.?
他有一個爸爸當醫(yī)生的朋友阴汇。
I once lived in the house whose roof has fallen in.?
我曾經(jīng)住在那幢屋頂已經(jīng)倒塌了的房子里。
注意：指物時节槐，常用下列結(jié)構(gòu)來代替：
The classroom whose door is broken will soon be repaired.
The classroom the door of which is broken will soon be repaired.
Do you like the book whose cover is yellow? Do you like the book the cover of which is yellow?
（三）“介詞+關(guān)系代詞”引導的定語從句
關(guān)系代詞在定語從句中作介詞賓語時搀庶，從句常常由“介詞+關(guān)系代詞”引出。
The school (which / that) he once studied in is very famous.
The school in which he once studied is very famous.?
他曾經(jīng)就讀過的學校很出名铜异。
Tomorrow I'll bring here the magazine (which / that) you asked for.
Tomorrow I'll bring here the magazine for which you asked.
明天我將把你要的雜志帶來哥倔。
This is the boy (whom / who / that) I played tennis with yesterday.
This is the boy with whom I played tennis yesterday.?
這是我昨天跟他打臺球的男孩。
We'll go to hear the famous singer (whom / who / that) we have often talked about.
We'll go to hear the famous singer about whom we have often talked.?
我們將去聽那位我們經(jīng)常談?wù)摰闹璩已莩?/p>
注意：
1.含有介詞的短語動詞一般不拆開熙掺，介詞仍放在短語動詞的后面。如：look for, look after, take care of等咕宿。
This is the watch (which / that) I am looking for.（正）這是我正在找的手表币绩。
This is the watch for which I am looking.（誤）
The babies (whom / who / that) the nurse is looking after are very healthy.（正）
那個保姆照看的小寶寶們都很健康。
The babies after whom the nurse is looking are very healthy.（誤）
2.若介詞放在關(guān)系代詞前府阀，關(guān)系代詞指人時只可用whom缆镣，不可用who, that；關(guān)系代詞指物時只可用which试浙，不可用that董瞻。關(guān)系代詞是所有格時用whose。
The man with whom you talked just now is my neighbour.（正）你剛才跟他談話的那個人是我的鄰居田巴。
The man with that / who you talked just now is my neighbour.（誤）
The plane in which we flew to Canada was really comfortable.（正）我們?nèi)ゼ幽么笏俗娘w機實在很舒服钠糊。
The plane in that we flew to Canada was really comfortable.（誤）
3．“介詞+關(guān)系代詞”前還可有some, any, none, all, both, neither, many, most, each, few 等代詞或者數(shù)詞。如：
He loves his parents deeply, both of whom are very kind to him.?
他深深地愛著他的父母壹哺，他們倆待他都很好抄伍。.
In the basket there are quite many apples, some of which have gone bad.?
籃子里有好些蘋果，有些已經(jīng)壞了管宵。
There are forty students in our class in all, most of whom are from big cities.?
我們班總共有40個學生截珍，大多數(shù)來自大城市。
Up to now, he has written ten stories, three of which are about country life.?
迄今為止箩朴，他寫了10部小說岗喉，其中3部是關(guān)于農(nóng)村生活的。
（四）關(guān)系副詞引導的定語從句
1.when 指時間炸庞，在定語從句中作時間狀語钱床。
I still remember the day when I first came to this school.
?我仍然記得我第一次來到這所學校的那一天。.
The time when we got together finally arrived.?
我們團聚的時刻終于到了埠居。
October 1, 1949 was the day when the People's Republic of China was founded.?
1949年10月1日是中華人民共和國成立的日子诞丽。
Do you remember the years when he lived in the countryside with his grandparents.?
你還記得在農(nóng)村和你祖父母一起生活的那些年嗎鲸拥？
2.where 指地點，在定語從句中作地點狀語僧免。
Shanghai is the city where I was born.?
上海是我出生的城市刑赶。
The house where I lived ten years ago has been pulled down.?
我十年前住的房子已被拆掉了。
I visited the farm where a lot of cows were raised.?
我參觀了那個飼養(yǎng)了許多奶牛的農(nóng)場懂衩。
Is this the place where they fought the enemy??
這是他們當初打敵人的地方嗎撞叨？
3.why指原因，在定語從句中作原因狀語浊洞。
Please tell me the reason why you missed the plane.
?請告訴我你誤機的原因牵敷。
The reason why he was punished is unknown to us.?
他受懲罰的原因我們都不知道。
I don't know the reason why he looks unhappy today.?
我不知道他今天為何看上去不愉快法希。
注意：關(guān)系副詞引導的定語從句經(jīng)臣喜停可以用“介詞+關(guān)系代詞”引導的定語從句來表示。
如：From the years when / in which he was going to primary school in the country he had known what he wanted to be when he grew up.?
自從他在農(nóng)村讀小學時苫亦，他就已經(jīng)知道長大后要做什么毛肋。
Great changes are taking place in the city where / in which they live.?
他們生活的城市正發(fā)生巨大的變化。.
The reason why / for which he refused the invitation is quite clear.?
他為什么拒絕接受邀請的原因是十分明了的屋剑。
（五）限制性定語從句和非限制性定語從句
1润匙、限制性定語從句：
The teacher told me that Tom was the only person that I could depend on.?
老師告訴我說湯姆是我唯一的可以依靠的人。.
China is a country which has a long history.?
中國是一個歷史悠久的國家唉匾。
In the street I saw a man who was from Africa.?
在街上我看到一個來自非洲的人孕讳。
2、非限制性定語從句舉例
Last summer I visited the People's Great Hall, in which many important meetings are held every year. 去年夏天巍膘，我參觀了人民大會堂厂财，在那兒每年都要舉行許多重要會議。
注意區(qū)分下列幾組句子的不同含義：Her brother who is now a soldier always encourages her to go to college. 她那當兵的哥哥總是鼓勵她上大學峡懈。（意含： 她還有其他哥哥蟀苛。）
Her brother, who is now a soldier, always encourages her to go to college. 她哥哥是當兵的，他總是鼓勵她上大學逮诲。（意含： 她只有一個哥哥帜平。）
難點釋疑：
（一）限制性定語從句中只能用that 引導定語從句的情況。
1．當先行詞是everything, anything, nothing（something 除外）, all, none, few, little, some等代詞時梅鹦，或當先行詞受every, any, all, some, no, little, few, much等代詞修飾時裆甩。如：
Have you taken down everything that Mr. Li said??
李老師講的你都記下來了嗎？
There seems to be nothing that is impossible to him in the world.?
對他來說似乎世界上沒有什么不可能的事齐唆。
All that can be done has been done.?
所有能做的都做好了嗤栓。
There is little that I can do for you.
?我不能為你干什么。
He stayed in the library and looked up any information that they needed.?
他呆在圖書館查找所需的資料。.
注意：當先行詞指人時茉帅，偶爾也可用關(guān)系代詞who叨叙，如：
Any man that / who has a sense of duty won't do such a thing.?
任何有責任感的人都不會做這樣的事。
All the guests that / who were invited to her wedding were important people.
?所有應(yīng)邀來參加她婚禮的客人都是重要人物堪澎。
2.當先行詞被序數(shù)詞修飾時擂错。
如：The first place that they visited in London was the Big Ben.?
在倫敦他們參觀的第一個地方是大本鐘。
3.當先行詞被形容詞最高級修飾時。
如：This is the best film that I have ever seen.?
這是我看過的最好的電影。
4.當先行詞被the very, the only修飾時荣德。
如：This is the very dictionary that I want to buy.
?這正是我要買的詞典。
After the fire in his house, the old car is the only thing that he owns.?
家里發(fā)生了火災(zāi)過后爽醋，那輛舊車成了他的唯一擁有。.
注意：當先行詞指人時便脊，偶爾也可用關(guān)系代詞who蚂四。如：
Wang Hua is the only person in our school who will attend the meeting.?
王華是我校唯一出席會議的人。
5.當先行詞前面有who, which等疑問代詞時哪痰。
如：Who is the man that is standing by the gate??
站在門口的那個人是誰遂赠？
Which is the T-shirt that fits me most??
哪件T恤衫最合我的身？
6．當先行詞為人與動物或人與物時妒御。
如：They talked about the persons and things that they remembered at school?
他們談?wù)撝麄兯苡浧鸬脑谛r的人和事解愤。
Look at the man and his donkey that are walking up the street.?
瞧瞧那個沿街走來的人和他的毛驢镇饺。
（二）關(guān)系代詞as和which 引導的定語從句
as 和which 引導非限制性定語從句時乎莉， 其用法有相同之處，也有不同之處奸笤。
1. as 和which都可以在定語從句中做主語或賓語惋啃，代表前面整個句子。如：
He married her, as / which was natural.?
他跟她結(jié)婚了监右，這是很自然的事边灭。
He is honest, as / which we can see.?
他很誠實， 這一點我們看得出來健盒。
2. as 引導的非限制性定語從句可以放在主句之前绒瘦、主句之后，甚至還可以分割主句扣癣。which引導的非限制性定語從句只可放在主句之后惰帽。另外，as 常常有“正如父虑、正像”的含義该酗。如：
As is known to all, China is a developing country.?
眾所周知，中國是發(fā)展中國家。
He is from the south, as we can know from his accent.?
他是南方人呜魄，這一點我們從他的口音可以知道悔叽。
John, as you know, is a famous writer.
?正如你所知， 約翰是個著名作家爵嗅。
Zhang Hua has been to Paris more than ten times, which I don't believe.?
張華已去過巴黎十多次了娇澎，這一點我不相信。
注意：當主句和從句之間存在著邏輯上的因果關(guān)系時操骡，關(guān)系詞往往只用which九火。如：
Tom was late for school again and again, which made his teacher very angry.?
湯姆老是遲到，這使得老師很惱火册招。.
These tables are made of metal, which made them very heavy.
?這些桌子是金屬的岔激，這使得這些桌子很重。
3. 當先行詞受such, the same 修飾時是掰，關(guān)系詞常用as虑鼎。如：
I've never heard such stories as he tells.?
我從未聽過象他講的這樣的故事。
He is not such a fool as he looks.?
他可不象他看上去的那樣傻键痛。
This is the same dictionary as I lost last week.?
這部詞典跟我上星期丟失的一樣炫彩。
(三) 以the way為先行詞的限制性定語從句通常由in which或that引導，而且通承醵蹋可以省略江兢。
The way (that / in which ) he answered the questions was surprising.?
他回答這些問題的方式令人驚奇。
I don't like the way (that / in which) you laugh at her.?
我不喜歡你沖她的樣子丁频。
（四）關(guān)系代詞與關(guān)系副詞的選擇
用關(guān)系代詞還是關(guān)系副詞引導定語從句主要看關(guān)系詞在定語從句中的作用（即所擔當?shù)某煞郑┥荚省Ｔ嚤容^：
A. I know a place where we can have a picnic.?
我知道一個我們可以野炊的地方。
I know a place which / that is famous for its beautiful natural scenery.?
我知道一個以自然景色優(yōu)美而聞名的地方席里。
B. I will never forget the days when we spent our holidays together.?
我永遠忘不了我們一起度假的日子叔磷。
I will never forget the days that / which we spent together.?
我永遠忘不了我們一起度過的日子。
C. This is the reason why he was dismissed.?
這就是他被解雇的原因奖磁。
This is the reason that / which he explained to me for his not attending the meeting.?
這就是他向我解釋的他沒有參加會議的原因改基。.
（五）定語從句與同位語從句的區(qū)別
1.定語從句修飾限定先行詞，它與先行詞是修飾關(guān)系咖为；同位語從句說明先行詞的具體內(nèi)容秕狰，
它與先行詞是同位關(guān)系。
The plane that has just taken off is for Paris.（定語從句）
剛起飛的那架飛機是開往巴黎的躁染。
The fact that he has already died is quite clear.（同位語從句）
他已去世了鸣哀，這個事實很明了。
2.定語從句由關(guān)系代詞或關(guān)系副詞引導褐啡，關(guān)系詞在從句中擔當相應(yīng)句子成分诺舔，關(guān)系代詞在從句中作賓語時經(jīng)常可省略。同位語從句主要由連詞that 引導低飒，在從句中一般不擔當成分许昨；有時由where, when, how, who, whether, what等連詞引導，這些連詞則在從句中擔當成分褥赊。
The news that he told me is true. （定語從句）他告訴我的消息是真的糕档。
The news that he has just died is true. （同位語從句） 他剛剛?cè)ナ懒耍@個消息是真的拌喉。
The problem that we are facing now is how we can collect so much money. （定語從句）我們現(xiàn)在面臨的問題是如何籌集這么多資金速那。
The problem how we can collect so much money is difficult to solve. （同位語從句）我們?nèi)绾位I集這么多資金，這個問題很難解決尿背。
The question that he raised puzzled all of us. （定語從句）他提出的問題讓我們很為難端仰。
The question whether he is sure to win the game is hard to answer. （同位語從句）他是否一定會贏得那場比賽，這個問題很難回答田藐。
3.同位語從句與先行詞一般可以用動詞be發(fā)展成一個完整的句子,定語從句則不能荔烧。
A. The idea that he we could ask the teacher for advice is wonderful. （同位語從句）我們可以向老師請教，這個主意不錯汽久。
The idea was that we could ask the teacher for advice.
B. The fact that the earth moves around the sun is known to all. （同位語從句）地球圍繞太陽轉(zhuǎn)鹤竭，這個事實人人皆知。
The fact is that the earth moves around the sun.
C. Pay attention to the problem how we can protect the wild animals. （同位語從句）請注意如何保護野生動物這個問題景醇。
The problem is how we can protect the wild animals.
