定語從句是中學英語教學的語法重點，也是高考熱點，現歸納如下。
考點一：考查關系代詞which引導的定語從句
1.which 引導的非限制性定語從句。
1）Dorothy was always speaking highly of her role in the play ,_____ ,of course ,made the others unhappy.(NMET2000)
A.who B.which C.this D.what
解：這道題考查which 引導的非限制性定語從句，從句被插入語of course所割開，答案選B.
2）：Whenever I speak to him, _____was fairly often ,he would talk on and on without giving me a chance to speak.
A. which B. what C. that D.when
解：可以把題目還原成Whenever I speak to him, he would talk on and on without giving me a chance to speak, ____ was fairly often.很容易判斷這是由which 引導的非限制性定語從句，答案選A.
注意：which引導非限制性定語從句，指代整個句子時，有可能置于句中，將指代的完整的句子分割開。
考點二：考查關系代詞as引導的定語從句.
1. as引導的限制性定語從句。
例如：These houses are sold at such a low price _____people excepted.(Shanghai 2000 spring)
A. like B. as C .that D. which
解：這道題考查是such -----as 句型在定語從句中的運用，答案選B。
注意：關系代詞as在限制性定語從句中常運用于句型such -----as 和the same ----as----句型。
2. as引導的非限制性定語從句。
例如：_____is known to everybody, the moon travels around the earth once every month.(NMET 2001)
A.It B.As C.That D.What
解：這道題要求學生搞清楚兩個句型It is known to everybody that ------（everybody knows that------）和As is known to everybody ( as指代整個句子the moon travels around the earth once every month) 的區別。答案選B.
思考：which和as作為關系代詞引導定語從句有何區別？
（1） as 作為關系代詞，引導非限制性定語從句，起先行詞必須是整個句子，而Which作為關系代詞，引導非限制性定語從句， 其先行詞既可以是整個句子也可以是名詞
（2） 當as和which都指代整個句子時，as可以置于主句的前、中、后,位置較靈活；但which 不能引導定語從句置于句首。
考點三：考查關系代詞whose 的用法。
例如：1)Have you seen the film “Titanic”, ______leading actor is world famous? (Shanghai 2000 spring )
A.its B.it’s C. whose D.which
解： 這道題考查這一考點：whose 在定語從句中充當定語，其先行詞為物，(等同于所修飾的名詞+of which)。原句可以轉化成：Have you seen the film “Titanic”, the leading actor of which is world famous? 答案選C.
2) His parents wouldn’t let him marry anyone ____family was in the country.
A. of whom B. whom C. of whose D. whose
解：這道題考查這一考點：whose 在定語從句中充當定語，其先行詞為人，(等同于所修飾的名詞+of whom)。原句可以轉化成: His parents wouldn’t let him marry anyone, the family of whom was in the country.答案選D.
注意：whose 在定語從句中充當定語時，其先行詞既可以為人也可以為物。
考點四：考查關系副詞where
例如：He’s got himself into a dangerous situation _____he is likely to lose control over the plane. (Shanghai 2001)
A.where B.which. C.while D.why
解：在這一定語從句中，其先行詞不是表示一個具體地點的名詞，而是一個抽象名詞situation。那么這道題考查where 在從句中表示抽象概念的情況，其常見的先行詞有 situation，point, position ,condition 等。
考點五：考查關系副詞when
例如：1）The film brought the hours back to me ____I was taken good care of in that far –away village. (NMET 2001)
A. until B. that C. when D. where
解：這道題 when 作為關系副詞，引導限制性定語從句，.意為“-----的時候”。常用的先行詞有moment,day, time ( hour, week, month, year)。
2）It was an exciting moment for these football fans this year, ______ for the first time in years their team won the World Cup.(2000 spring)
A.that B.while C.which D.when
解：從從句的意思“這是他們隊多年來第一次贏得世界杯”。可以推知：從句是對表示時間的先行詞加已說明，先行詞是an exciting moment，所以這道題考查 when 作為關系副詞，引導非限制性定語從句，.意為“在那時”“屆時”。
考點六：非謂語動詞在定語從句中的運用。
例如：1）The manager discussed the plan that they would like to see ____ the next year.(NMET 2000)
A. carry out B. carrying out C. carried out D. to carry out
解：可以把原句這一復雜句轉化為兩個簡單句
1． The manager discussed the plan.
2． They would like to see the plan carried out the next year.很顯然，運用了see sth done 這個結構。所以選C.
2)A-------- The electrical fan she ________in town yesterday works well again.
B-------- Thanks to the repairman ,it does work well again.
A. repaired B. had repaired C. has repaired D. had had repaired
解：這道題解題的關鍵在于分析句子的成分。A句可以分解為
1) The electrical fan works well again.
2) She had it repaired in the town yesterday. 很顯然have sth done 這個詞匯運用其中，所以選B.
由此可見，只要學生在平時加以歸納和總結，定語從句這個考點一定會不難攻破。
配套練習 [參考答案1]A 2] D 3] B 4] A 5] B 6] C 7] D 8] A 9]C 10] D 11] D 12] B 13] C]
1.______ is known to all ,China has set up good relations with all the neighboring countries.
A. As B. It C. What D. Which
2.It is better to have someone smoke outside than indoors, ____there is less space for smoke to disappear.
A. which B. at which C. that D. where
3.Please think up a situation ____you can use the daily expression.
A. which B. where C. on which D. there
4.These countries would join one another against terrorism, ____ was agreed to at the international conference.
A. as B. it C. that D. what
5.A: Are you familiar with the music?
B: Yes. There was a time ____this kind of music was quiet popular.
A. that B. when C. with which D. about which
6.You are quite right on this point, ______ most of us were lacking understanding.
A . while B. but C. where D. to which
7.We must learn to deal with the condition ______ there is neither weight nor gravity ,neither up nor down.
A. which B. by which C. that D. where
8.He reached London in 1996,______some time later, he became a famous actor.
A. where B. when C.which D.that
9.The result of the experiment was very good , _____ we hadn’t expected.
A. when B. that C. which D. what
10.Don’t trust such people ____ praise you to your face but speak ill of you behind your back.
A. who B. that C. whoever D. as
11.He has reached the point ____ a change is needed.
A. which B. on which C. that D. where
12. More and more people would like to live in the countryside ________ there is fresher air and lower price of housing.
A. that B. where C. which D. when
13. My father bought an old Chinese painting, _______ was very reasonable.
A. the price of whose B. which price C. the price of which D. its price
（小周）