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初中英语定语从句知识点整理

2020-11-19 15:40:54
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定语从句即指在主从复合句用作定语的从句。初中英语的定语从句知识点你知道多少?以下是小编收集整理的一些关于初中英语定语从句知识点整理_2021中考定语从句重点知识,作为参考,希望你喜欢。

初中定语从句知识点:

定语从句的三种功能

定语从句在句中相当于一个形容词,起定语的作用,修饰说明名词、代词或主语的全部内容。通常在被修饰的词语(即先行词)之后,由关系词引导。定语从句的三种功能:

1.连接功能:连接从句,引导一个定语从句

2.指代功能:指代先行词

3.语法功能:在定语从句中充当句子成分

限定性定语从句

1. that即可代表事物也可代表人,which代表事物;它们在从句中作主语或宾语,that在从句中作宾语时常可省略关系词,which在从句中作宾语则不能省略。而且,如果which在从句中作不及物动词+介词的介词的宾语,注意介词不要丢掉,而且介词总是放在关系代词which的前边,但有的则放在它原来的位置

2. which作宾语时,根据先行词与定语从句之间的语义关系,先行词与which之间的介词不能丢

3. 代表物时多用which,但在带有下列词的句子中用that而不用which,这些词包括all, anything, much等,这时的that常被省略

4. who和whom引导的从句用来修饰人,分别作从句中的主语和宾语,whom作宾语时,要注意它可以作动词的宾语也可以作介词的宾语

5. where是关系副词,用来表示地点的定语从句

6. when引导定语从句表示时间

〔注〕值得一提的是,表示时间time一词的定语从句只用when引导,有时不用任何关系代词,当然也不用that引导

By the time you arrive in London, we will have stayed there for two weeks.

I still remember the first time I met her.

Each time he goes to besiness trip, he brings a lot of living necessities, such as towers, soap, toothbrush etc.

7. whose是关系代词,修饰名词作定语,相当于所修饰成分的前置所有格

8. 当从句的逻辑主语是some, any, no, somebody, anybody, nobody, something, anything, everything或nothing时,常用there is来引导

that在定语从句中的用法

(1)不用that的情况

(a) 在引导非限定性定语从句时。

(错)The tree, that is four hundred years old, Is very famous here.

(b) 介词后不能用。

We depend on the land from which we get our food.

We depend on the land that/which we get our food from.

(2) 只能用that作为定语从句的关系代词的情况

(a) 在there be 句型中,只用that,不用which。

(b) 在不定代词,如:anything, nothing, the one, all等作先行词时,只用that,不用which。

(c) 先行词有the only, the very,the same,the last,just修饰时,只用that。

(d) 先行词为序数词、数词、形容词最高级时,只用that,不能用which。.

(e) 先行词既有人,又有物时。

(f) 先行词指物,在主句中作表语时.

(g) 为了避免重复.

(h)先行词是the way或the reason时,that可作关系副词,也可省略

(i) 主句的主语是疑问词who /which时

关系副词用法

1. where指地点,在定语从句中做地点状语用来表示地点的定语从句。

(1) Shanghai is the city where I was born.

(2) The house where I lived ten y ears ago has been pulled down.

2. when引导定语从句表示时间。在定语从句中做时间状语也可做连接词用

(1) I still remember the day when I first came to the school.

(2) The time when we got together finally came.

[注]表示时间time一词的定语从句只用when引导,有时不用任何关系代词,当然也不用that引导。

By the time you arrived in London, we had stayed there for two weeks.

到你到达伦敦的时候,我们在那里已经待了两个星期。

I still remember the first time I met her. 我仍然记得我第一次见到她。

Each time he goes to business trip, he brings a lot of living necessities, such as towels, soap, toothbrush etc。

每一次他去出差,他带来了生活必需品,如毛巾,肥皂,牙刷等,很多。

3. why指原因 在定语从句中做原因状语

(1) Please tell me the reason why you missed the plane.

(2) I dont know the reason why he looks unhappy today.

注意:关系副词引导的从句可以由介词+关系代词引导的从句替换

(1) The reason why/ for which he refused the invitation is not clear,

(2) From the year when/in which he was going to school he began to know what he wanted when he grew up.

注:1)介词后面的关系代词不能省略。

2)that前不能有介词。

3) 某些在从句中充当时间,地点或原因状语的介词+关系词结构可以同关系副词when ,where和why 互换。

This is the house in which I lived two years ago.

This is the house where I lived two years ago.

Do you remember the day on which you joined our club?

Do you remember the day when you joined our club?

This is the reason why he came late.

This is the reason for which he came late.


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