定語從句，一個簡單句跟在一名詞或代詞後（先行詞）進行修飾限定，就叫做定語從句。
會考定語從句易錯題
命題角度1
正確區分關係代詞與關係副詞的用法
1.(典型例題精選 )I walked in our garden,Tom and Jim were trying a big sign onto one of the trees.
A. whichB. whenC. whereD. that
[考場錯解]B
[專家把脈]以句意來看，很容易把本題當作是一個時間狀語從句或是等立連詞when引導的從句。根據題幹分析，後者是用來說明Tom and Jim要做的事情的地點．也就是說應該用定語從句來修飾和說明情況，故填 where來引導非限制性定語從句。
[對症下藥]C
2.(典型例題精選 ) If a shop has chairswomen can park their men, women will spend more time in the shop.
A. thatB. whichC. whenD. where
[專家把脈]本題考查了對定語從句及其引導詞的判斷。該句句意為“如果商店裡有椅子供和婦女來購物的男人們使用。婦女們在商店中會待更長的時間。”chairs在句中作先行詞表示地點，後跟定語從句須用where引導，where在從句中作狀語。
[對症下藥]D
3.(典型例題精選 )You can find whatever you need at the shopping center,is always busy at the weekend.
A. thatB. whereC. whatD. which
[考場錯解]A
[專家把脈]本題考查非限制性定語從句。that， what不引導非限制性定語從句，where表示地點。
[對症下藥]D
4.(典型例題精選 ) Her sister has become a lawyer,she wanted to be.
A. whoB. thatC. whatD. which
[考場錯解]A
[專家把脈]考生乍一看先行詞“a lawyer"指人，誤選 A。分析從句及根據題意“她姐姐已當了一名律師，那是她過去曾想從事的一種職業(律師)”故選D。which引導非限制性定語從句，而B that不能引導非限制性定語從句。這是有關定語從句的題，故不選c。
[對症下藥]D
5.(典型例題精選Womendrink more than two cups of coffee a day have a greater chance of having heart dis ease than thosedon' t.
A．who；不填B．不填；who
c．who；whoD．不填表；不填
[考場錯解]B
[專家把脈]本題考查who引導的定語從句。第一個空who在從句中做主語，women為先行詞；第二空中， who引導的從句省略了“drink two cups of coffe a day”，先行詞為those。
[對症下藥]C
6.(典型例題精選We' re just trying to teach a pointbeth sides will sit down together and talk.
A. whereB. thatC. whenD. which
[考場錯解]B或C
[專家把脈]考生易把此題理解為when引導的時間狀語從句，而誤選C。本題考查where引導的'定語從句， where在從句中作狀語；而that引導定語從句時，在從句中做主語或賓語。因此本題應選A。
[對症下藥]A
專家會診
1．定語從句相當於一個形容詞，起定語作用，修飾名詞或代詞。
2．定語從句的引導詞的三種功用：(1)引導定語從句；(2)替代先行詞；(3)在定語從句中充當一定的成分。
3．解題要領：根據定語從句中所缺成分來確定是用關係代詞還是關係副詞，決不要因先行詞是時間名詞就用when，是地點名詞就用where。
4．當先行詞指物時，許多情況下既可以用關係代詞which，也可以用關係代詞that，但在下列情況下，只能使用關係代詞that(1)當先行詞是不定代詞all，much，little，something, everything, anything, nothing, none, the one時。如: Do you have anything that you want to say for youraelf ?You should hand in all that you have.
(2)當先行詞前面有only，any，few，little，no， all，very等詞修飾時。如：
This is the very book that I' m looking for.
The only thing that we can do is to give you some mane),.
(3)當先行詞是形容詞最高階時或它的前面有形容詞最高階修飾時。如：
This is the best that has been wasted against pollution.
This is the most interesting film that I' ve ever seen.
(4)當先行詞是序數詞或它前有一個序數詞時，如：
This train is the last that will go to Huangzhou.
What is the first American film that you have seen?
(5)當先行詞既有．人又有物時，如：
Do yon know the things and persons that they are talking about?
(6)當主句的主語是疑問詞who或which時。如：Which is the bike that you lost? Who is the boy that won the gold medal?
(7)有兩個定語從句時，其中一個關係代詞已用which，另外一個空用tbato如：
They secretly built up a small factory which pro- duced things that could cause pollution.
