一、限制性定語從句
1、形式上：不用逗號“，”與主句隔開。
2、意義上：是先行詞不可缺少的定語，如刪除，主句則失去意義或意思表達不完整。
3、譯法上：譯成先行詞的定語：“．．．的”
4、關系詞的使用上：A．作賓語時可省略 B．可用that C．可用who 代替whom
5、限制性定語從句舉例：
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。
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。
二、非限制性定語從句
1、形式上：用逗號“，”與主句隔開。
2、意義上：只是對先行詞的補充說明，如刪除，主句仍能表達完整的意思。
3、譯法上：通常譯成主句的并列句。
4、關系詞的使用上：A．不可省略 B．不用that C．不可用who 代替whom
5、非限制性定語從句舉例 ：
His mother, who loves him very much, is strict with him. 他媽媽十分地愛他，對他要求很嚴格。
China, which was founded in 1949, is becoming more and more powerful.
中國是1949年成立的， 現在正變得越來越強大。
Last summer I visited the People’s Great Hall, in which many important meetings are held every year.
去年夏天，我參觀了人民大會堂，在那兒每年都要舉行許多重要會議。
注意：as和which 引導的非限定性定語從句的比較：
1）非限定性定語從句位于句未，而且as 和which 在從句中作主語、賓語、表語時可互換。
He is a farmer, as/which is clear from his manner.
This elephant is like a snake, as/which anybody can see.
2）which 引導的非限定性定語從句一般放在句未，而as 引導的非限定性定語從句可放在句未，也可放在句中、句首。放在句首時不能用which 替換,只能用as。
Crusoe lost his dog, which made him very sad
Taiwan is part of China, as/which is known to all.
As we have seen, oceans cover more than 70 percent of the earth.
3）as引導非限定性定語從句時，意為“這一點、這件事” “正如…”，常與see，hope，expect，know，guess等動詞搭配；而which引導非限定性定語從句時與主句有一種因果關系，可譯為“所以……”。
The color, as you all know, is dark red.
Bamboo is hollow, which makes it very light.
二、綜合練習
（一）先行詞是人的定語從句：
1. Is he the man__________ wants to see you?
2. He is the professor ____________ I met yesterday.
3. The famous film star, _______ has played many roles, will act as a blind woman in her next film.
4. The man _____ _____ I would turn when I am in trouble is my Chinese teacher.
5. This is the student _____ ____ I like to play.
6. The girl _____ ____ I didn’t agree is one of the students ________study hard in our class.
7. He is the teacher ______ son is a soldier.
8. He is the teacher ______ ____ son we often like to argue.
9 He is the teacher _____ _____class my son study.
10. There are about 15 teachers in our grade, some_____ ____ are women teachers.
11. She is one of the students _____ ______(know) my secret.
12. She is the only one of the students ______ _______ (know) my secret.
（二）先行詞是物的定語從句：
1. The house _______ is in the back of our classroom is the teacher’s office.
2. The house________ door faces north is our teachers’ office.
3. The house ________ you saw is a library.
4. The house_____ ____ door there is “ Be Quiet” is our teachers’ office.
5. These are all the things______ I can get for you.
6. The only thing _______ I can do is to wait.
7. I can still remember the first toy ________my mother bought for me.
8. There is nothing ______can keep me back..
9. They are the very things______ make us interested.
10. We should care more about the people and the things ______are around us.
11. These are the situations ________ we often feel nervous.
12. This is the way ___________ I solve problems.
（三）先行詞是時間的定語從句：
1. I always remember the days __________we spent together.
2. I always remember the days __________ we played together.
3. I always remember the days ___________ are my family’s birthday.
4. I always remember the days ___________I lived with my grandparents.
5.I will remember the date ___________I joined the Party.
6.It is Oct, 1 1949 _________ new china was founded.
7.It is on Oct, 1 1949__________new china was founded.
（四）先行詞是地點的定語從句：
1. Xiamen ,_______ lies in the south east of China is a beautiful city.
2. Xiamen________ we live in is a beautiful city.
3. Xiamen __________many foreigners come to visit is a beautiful city.
比較：Xiamen _____ _______ many foreigners come to pay a visit is a beautiful city.
It is Xiamen _______ people have special mid-autumn game.
It is in Xiamen _______people have special mid-autumn game.
（五）先行詞是原因的定語從句：
1. I quite agree with the reason ________ you told me.
2. I don’t believe the reason ________ you were late this morning.
3. The reason ______ I didn’t know the answer is _____I didn’t review my lesson.
The reason ______ I got up late is that I stayed up too late, doing my homework.
This is the reason _________ caused me late for school today.
（六）修飾整個句子的定語從句：
1. He is always talking in class, ______often makes the teacher angry.
2. That question was too hard to answer,______ cost me much time.
3. There are many books in the bag, _______makes it heavy to carry.
4. You gave me much help, ________is very kind of you.
（七）其他形式的定語從句：
1. I like such students ____you talked about.
2. Such things_____ they did are not welcome.
3. ____ we can guess from the way he speaks, he is from America.
4. Taiwan, ____ we all know, is one part of China.
5. Some people like it while some dislike it, _______ is always the case.
6. ____ is known to everybody, the moon travels round the earth once every month.
7. He passed the exam,______ we had expected.
8. _____ was said above, many people have realized the importance of learning English.
9. I like the same pen _____ you have.
參考答案：
（一）who / whom / who / to whom / with whom / with whom; who / whose /
with whose / in whose / of whom / who know / who knows
（二）which / whose / which / on whose / that / that / that / that / that / that / where / in which (that / 省略)
（三）which / when / which / when / when / when / that
（四）which / which / which / to which / where / that
（五）which / why / why; that / why / which
（六）which (全部)
（七）as (全部)
