定语从句

Harry potter is a boy （who has magic power.)-----定语从句

先行词 关系代词

This is the place (where I live.)---定语从句

先行词 关系副词

一、限制性定语从句和非限制性定语从句。

Teachers who are kind are popular with the students.

Mr Wang, who is kind, is popular with the students.

二、认真观察，关系代词（ that/which/ who/whom/whose/as）实际上是先行词的复指。

1). A plane is a machine ( that can fly.) A machine = that

2). The boy ( who broke the window) is called Tom.

The boy = who 关系代词实际上是先行词的复指

3).The boy(whose parents are dead )was brought up by his grandfather

The boy’s =whose 关系词whose实际上是先行词的所有格

4).The man (who lives next to us) sells vegetables. The man = who

5). You must do everything (that I do.) everything=that

6). I have found the book (which I lost.) which = the book

7).He is the only one of the teachers (who comes from Qingdao.)

三、观察一下以下定语从句的位置和上面七个定语从句的位置有什么不同。（定语从句的位置）

8). The day came at last (when I went to college.) when= in the day

9).He laughs best( who laughs last.) He=who

四、观察两个句子如何合并为一个复合句。

10).The eggs were not fresh. I bought them yesterday.

The eggs (that/which) I bought were not fresh.

11).The friend was not hungry. He came to supper last night.

The friend who/ that came to supper last night was not hungry.

12).He prefers the cheese. It comes from his parent’s farm.

He prefers the cheese that / which comes from his parent’s farm.

13).The noodles were delicious. You cooked them.

The noodles ( which/ that )you cooked were delicious.

14).I don’t like the people. They smoke a lot.

I don’t like the people that / who smoke a lot

五、什么情况下用关系副词（ when/where/why）关系副词实际上是介词＋先行词

1).The school (where /in which I study ) is far from my home.

in the school = In which=where

2).I still remember the day (when/on which I came here.)

on the day=on which =when

3).This is the house( where/inwhich I lived last year.)

in the house=in which= where

4).There are many reasons (why/for which people like traveling.)

for the reasons =for which=why

5). I visited the school (where/ in which I studied.)

where=in which= in the school

六、whose的用法

The house is mine. The house’s window is broken.

The house ( whose window is broken ) is mine.

The house is mine. The window of the house is broken.

The house (the window of which is broken) is mine.

of which the window is broken

七、介词+关系代词的情况

The man （who/whom you spoke to） was a scientist.

The city （that/which she lives in） is far away.

The man (to who/whom you spoke) was a scientist.

The city (in that/which she lives) is far away.

八、as引导限制性定语从句

1).主要结构有：the same…as as…as such…as so…as

主句中出现the same, as, such, so修饰先行词，需选择as做关系代词在定语从句中做主语或宾语。

1.  It’s the same person (was we wanted to find yesterday .)

2.  Such girls ( as he knows ) are good at English .

3.  Do you have such books( as we like ?)

4.  She will marry as healthy a man (as she can find .)

5.  There is so warm a house( as we want to live in .)

2).which引导的定语从句只能位于主句后，但as引导的从句可位于主句前、中、后。as在定语从句中作主语时，从句谓语通常要有be或别的系动词，但which不受此限制。

如： Li Ming was late, which (=and this) made Mr. Zhang very angry.

1． As everyone knows, China is a beautiful country with a long history .

2．  The earth, as we know , moves round the sun .

3．  Tom works hard and is willing to help others, as we all know.

3). 非限制性定语从句中的谓语为被动式时，常用as做主语

As is/was said /known/announced /reported/mentioned/expected

/discussed, as has been said before, as is not a set of dead rules.

As is known to all , TaiWan is part of China .

4)  as引导非限制性定语从句，有“如，似，正像”的含义，因此，下列句式多用as

as has been said above 如上所说

as anybody can see正像每个人所看到的那样

as we had expected正如我们所预料的那样

The boy has as much progress as we had expected.

A plane is a machine