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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。下面是小编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 Clauses)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 see 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) Whose 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 whose car had broken down. 那人车坏了,大家都跑过去帮忙。
Please pass me the book whose (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 seen 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 refused 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whose)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 house in which we lived last year.
这是我们去年居住的房子。
Please 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 passed 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, those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 use 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 use 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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