九年级英语定语从句讲解及习题 定语从句
一. 定语从句的功用和结构
在复合句中，修饰某一名词或代词的从句叫做定语从句（以下简称定从）。被定从句修饰的词叫做先行词。定从必须放在先行词之后。引导定从的关联词有关系代词that, which, who, whom, whose和关系副词when, where, why。含定从的复合句的基本结构为：先行词+关系词+定从。
二. 关系代词和关系副词的功用：关系代词和关系副词用来引导定从，在先行词和定从之间起纽带作用，使二者联系起来。关系代词和关系副词又在定从中充当一个成分。关系代词做主语，宾语，定语，关系副词可作状语。
1. 作主语：关系代词在定从中作主语时，从句的谓语动词的人称和数须和先行词一致。I don’t like people who talk much but do little.
2. 作宾语： She is the person that I met at the school gate yesterday.
3. 作定语：关系代词whose在定从中作定语用。例如： The girl whose father is a teacher studies very hard. 4. 作状语： This is the house where I was born.
九年级英语定语从句专项练习题及答案 定义：
在复合句中作定语，修饰主句中的某一名词或代词的从句，叫做定语从句。
被定语从句所修饰的词叫先行词，位于从句之前。定语从句有关系代词that、which、who、whose、whom和关系副词when 、where、why引导.
定语从句的基本结构为： 先行词 + 关系代/副词 + 句子
Do you know the boy who is wearing a blue jacket?
The skirt that /which is made of silk is very expensive. I can’t afford it.
The number of the people who/that own cars is increasing.
The house that(which、/) the famous person once lived in is very old now.
考点1. 关系代词: that, which, who, whom, whose 关系副词: when, where, why.
a. that－既可指人，也可指物，作主语，不能省略；作宾语，可以省略；不引导非限定性定语从句
There are lots of things ________ I need to prepare before the trip. （10河北）
A. who B. that C. whom D. whose (答案: B)
b. which－指物，作主语，不能省略；作宾语，可以省略.可引导非限定性定语从句。
This is the dictionary ________ Mum gave me for my birthday. (08河北)
A. which B. what C. whose D. whom (答案：A)
Sorry, we don’t have the coat ________ you need. (09河北) A. what B. who C. whom D. which (答案：D)
c. who－般指人，作主语，不能省略；作宾语，可以省略（常用,whom） Jamie is a young cook ________ wants to improve school dinners. (10天津)
A. who B. whose C. whom D. which (答案：A)
d. whose 作定语,表示所属关系。
I like the teacher ________ classes are very interesting and creative. (09兰州)
A. which B. who C. what D. whose (答案：D)
e. when 作时间状语:When =介词 + which
She will never forget the day when (=on which) she was married. f. where 作地点状语 where = 介词 + which
I want to know the place where (= in which) I was born. g. why 作原因状语, 其先行词常常是the reason. why = for which That is the reason why(= for which) I’m late.
2. 当关系代词在定语从句中作主语时,定语从句的谓语动词形式由先行词定。
1. I prefer shoes that are cool. 2. I like a pizza that is really delicious.
3. 有时只能用 that , 不用 which, 常见的情况有六种：
1).当先行词是 all, any, few, little, none, anything, everything, nothing ,或被它们修饰时。 That’s all that I know.
Is there anything that I can do for you?
2).当先行词被形容词最高级或序数词修饰That is the most interesting book that I have ever read.
3).当先行词有the very, the only, the same等修饰时。
That’s the only thing that I can do now. These are the very words that he used.
4).当主句以 who 或 which开头时，定语从句的关系词用 that, 而不用 which 或 who.
Who is the girl that spoke to you just now? Which is the pen that
you lost ?
5).先行词同时包括人或物时，关系词用that.
The man and his dog that I always meet are standing by the gate. 6).当关系代词在从句中作表语时。 China is not the country that it was. 4. 只用 which ,不用that 的情况： 1).关系代词前有介词时。
This is the cage that / which Polly lives in. = This is the cage in which(where) Polly lives . 2).先行词本身为 that.
The clock is that which tells the time. 3). 在非限制性定语从句中。
His English, which used to be poor , is excellent now. 定语从句专项练习
1.Sorry, we don’t have the coat ________ you need. A. what B. who C. whom D. which
2.This is the dictionary ________ Mum gave me for my birthday. A. which B. what C. whose D. whom 3.Do you know the man ________ is sitting behind Nancy? A. what B. which C. who D. whom
4.The book ________ he bought yesterday is very interesting. A. / B. why C. when D. what