定语从句基本概念讲解

更新时间:2022-12-22 07:47:00 阅读: 评论:0

定语从句基本概念

定语从句是由关系代词和关系副词引导的从句,其作用是作定语修饰主句的某个名词性成分,定语从句分为限制性和非限制性从句两种。下面是收集整理的定语从句基本概念,希望对你有所帮助。

被修饰的词叫先行词。定语从句不同于单词作定语的情况,它需要放在被修饰的词(即先行词)之后。定语从句一般由关系代词来引导。关系代词必须放在定语从句之首。定语从句(Attributive Claus)在句中做定语,修饰一个名词或代词,被修饰的名词,词组或代词即先行词。定语从句通常出现在先行词之后,由关系词(关系代词或关系副词)引出。

关系代词引导的定语从句

关系代词所代替的先行词是人或物的名词或代词,并在句中充当主语、宾语、定语等成分。关系代词在定语从句中作主语时,从句谓语动词的人称和数要和先行词保持一致。

1)who, whom, that

这些词代替的先行词是人的名词或代词,在从句中所起作用如下:

Is he the man who/that wants to e you?

他就是想见你的人吗?(who/that在从句中作主语)

He is the man whom/ that I saw yesterday.

他就是我昨天见的那个人。(whom/that在从句中作宾语)

2) Who 用来指人或物,(只用作定语, 若指物,它还可以同of which互换), 例如:

They rushed over to help the man who car had broken down. 那人车坏了,大家都跑过去帮忙。

Plea pass me the book who (of which) cover is green. 请递给我那本绿皮的书。

3)which, that

它们所代替的先行词是事物的名词或代词,在从句中可作主语、宾语等,例如:

A prosperity which / that had never been en before appears in the countryside. 农村出现了前所未有的繁荣。(which / that在句中作主语)

The package (which / that) you are carrying is about to come unwrapped. 你拿的包快散了。(which / that在句中作宾语)

关系副词引导的定语从句

关系副词可代替的先行词是时间、地点或理由的名词,在从句中作状语。

1)when, where, why

关系副词when, where, why的含义相当于"介词+ which"结构,因此常常和"介词+ which"结构交替使用,例如:

There are occasions when (on which) one must yield. 任何人都有不得不屈服的时候。

Beijing is the place where (in which) I was born. 北京是我的出生地。

Is this the reason why (for which) he refud our offer? 这就是他拒绝我们帮助他的理由吗?

2)that代替关系副词

that可以用于表示时间、地点、方式、理由的名词后取代when, where, why和"介词+ which"引导的定语从句,在口语中that常被省略,例如:

His father died the year (that / when / on which) he was born. 他父亲在他出生那年逝世了。

He is unlikely to find the place (that / where / in which) he lived forty years ago. 他不大可能找到他四十年前居住过的地方。

判断关系代词与关系副词

方法一: 用关系代词,还是关系副词完全取决于从句中的谓语动词。及物动词后面无宾语,就必须要求用关系代词;而不及物动词则要求用关系副词。例如:

This is the mountain village where I stayed last year.

I'll never forget the days when I worked together with you.

判断改错(注:先显示题,再显示答案,横线;用不同的颜色表示 出。)

(错) This is the mountain village where I visited last year.

(错) I will never forget the days when I spent in the countryside.

(对) This is the mountain village (which) I visited last year.

(对) I'll never forget the days (which) I spent in the countryside.

习惯上总把表地点或时间的名词与关系副词 where, when联系在一起。此两题错在关系词的误用上。

定语从句要点

一. 定语从句的概念

在复合句中,修饰某一名词或代词的从句叫定语从句。被修饰的名词或代词叫先行词,引导定语从句的词叫关系词,定语从句一般放在先行词的后面。

二. 引导定语从句的关系词

引导定语从句的关系词有关系代词和关系副词,常见的关系代词包括that, which, who(宾格whom,所有格who)等,关系副词包括where, when, why等。关系代词和关系副词放在先行词及定语从句之间起连接作用,同时又作定语从句的重要成分。

三. 定语从句的分类

根据定语从句与先行词的关系,定语从句可分为限制性定语从句及非限制性定语从句。限制性定语从句紧跟先行词,主句与从句不用逗号分开,从句不可省去。非限制性定语从句与主句之间有逗号分开,起补充说明作用,如省去,意思仍完整。

四. 关系代词的用法

1. that 既可以用于指人,也可以用于指物。在从句中作主语、宾语或表语。作主语时不可省略,作宾语可省略。例如:

Mary likes music that is quiet and gentle.

玛丽喜欢轻柔的音乐。(that作主语)

The coat (that) I put on the desk is blue.

我放在桌子上的那件外套是蓝色的。(that作宾语)

2.which用于指物,在句中作主语、宾语或表语。作主语不可省略,作宾语可省略。例如:

The building which stands near the train station is a supermarket.

位于火车站附近的那座大楼是一家超市。(作主语)

The film (which) we saw last night was wonderful.

我们昨天晚上看的那部电影很好看。(作宾语)

3.who, whom用于指人,who 用作主语,whom用作宾语。在口语中,有时可用who代替whom。who和whom作宾语时也可省略。例如:

The girl who often helps me with my English is from England.

经常在英语方面帮助我的那个女孩是英国人。(作主语)

Who is the teacher (whom) Li Ming is talking to?

正在与李明谈话的老师是谁?(作宾语)

注意:

(1)当定语从句中含有介词,介词放在句末时,who,whom,that, which可省略,但介词在关系代词前时,只能用介词+which/whom结构。例如:

This is the hou in which we lived last year.

这是我们去年居住的房子。

Plea tell me from whom you borrowed the English novel.请告诉我你从谁那借的这本英文小说。

(2)含有介词的固定动词词组中,介词不可前置,只能放在原来的位置上。例如:

This is the person whom you are looking for.

这就是你要找的那个人。

(3)that 作介词的宾语时,介词不能放它的前面,只能放在从句中动词的后面。例如:

The city that she lives in is very far away.

她居住的城市非常远。

(4)关系词只能用that的情况:

a. 先行词被序数词或形容词最高级所修饰,或本身是序数词、基数词、形容词最高级时,只能用that,而不用which.例如:

He was the first person that pasd the exam.

他是第一个通过考试的人。

b. 被修饰的先行词为all, any, much, many, everything, anything, none, the one等不定代词指物时,只能用that,而不用which.例如:

Is there anything that you want to buy in the shop?

你在商店里有什么东西要买吗?

c. 先行词被the only, the very, the same, the last, little, few 等词修饰时,只能用that,而不用which.例如:

This is the same bike that I lost.

这就是我丢的那辆自行车。

d. 先行词里同时含有人或物时,只能用that, 而不用which.例如:

I can remember well the persons and some pictures that I saw in the room.

我能清楚记得我在那个房间所见到的人和一些照片。

e. 以who或which引导的特殊疑问句,为避免重复,只能用that.例如:

Who is the girl that is crying?

正在哭泣的那个女孩是谁?

f. 主句是there be 结构,修饰主语的定语从句用that,而不用which,例如:

There is a book on the desk that belongs to Tom.

桌子上那本书是汤姆的。

(5)关系词只能用which,而不用that 的情况:

a. 先行词为that, tho时,用which, 而不用that.例如:

Whats that which is under the desk?

在桌子底下的那些东西是什么?

b. 关系代词前有介词时,which,而不用that.例如:

This is the room in which he lives.

这是他居住的'房间。

c. 引导非限制性定语从句,先行词指事物时,用which, 而不用that,例如:

Tom came back, which made us happy.

汤姆回来了,这使我们很高兴。

五. 关系副词的用法

1. when指时间,其先行词表示时间,when在定语从句中作时间状语。例如:

This was the time when he arrived.

这是他到达的时间。

2. where指地点,其先行词表示地点,where在定语从句中作地点状语。例如:

This is place where he works.

这是他工作的地点。

3. why 指原因,其先行词是原因,why在定语从句中做原因状语。例如:

Nobody knows the reason why he is often late for school.

没人知道他为什么上学总迟到。

拓展:定语从句习题

请看下面一道题

The letter they were looking forward to _________ at last.

A. arrived B. arriving C. had arrived D. arrive

对于此题,基础稍差的同学可能选D,认为空格前的 to 是不定式符号,所以后接动词原形;基础稍好的同学可能会选B,知道 look forward to 是短语,意为 look forward to “盼望”,其中的 to 是介词,而不是不定式符号,所以后接动名词;只有基础扎实、语感好、而且细心的同学才会选A,诚如上面所说,look forward to 中的 to 是介词,而不是不定式符号,所以后接动词作宾语时,要用动名词,而不用动词原形。但问题是此句中的动词 arrive 不是介词 to 的宾语,而是句子的谓语。

句子的正解分析是:the letter 为句子主语,they were looking forward to 是修饰主语的定语从句(介词 to 的宾语是引导该定语从句的关系代词 that,被省略),arrived 是句子谓语。

请看以下试题:

(1) The professor you referred to _________ just now.

A. comes B. come C. coming D. came

答案选D,句子主语为 the professor,you referred to 为修饰 the professor 的定语从句,空白处填 came,为句子谓语。

(2) The theory he sticks to _________ to be of no u in our studies.

A. proves B. prove C. proving D. be proved 答案选A,he sticks to 是修饰主语 the theory 的定语从句,句子的基本结构为 The theory proves to be of no u in our studies.

(3) The work he devoted his time to _________ worth praising.

A. wasB. be C. being D. been

答案选A,he devoted his time to 是修饰主语 the work 的定语从句。句子的基本结构为 The work was worth praising.

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