初中定语从句知识点
英语定语从句知识点归纳
在复合句中,修饰名词或代词的从句叫定语从句。
引导定语从句的词叫关系词。
被修饰的名词或代词叫先行词。定语从句一般放在先行词的后面。
2、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。
3、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。
1.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。例如:
Any man that / who has a sense of duty won’t do such a thing.
任何有责任感的人都不会做这样的事。
2.非限制性定语从句主句与从句之间有逗号分开,起补充说明作用,如省去,意思仍完整。例如:
The house,which we bought last month,is very nice.
这幢房子很漂亮,是我们上个月买的.
注意:非限定性定语从句中不能使用关系代词 that。
4、关系代词的用法
1.that
that既可以用于指人,也可以用于指物。在定语从句中作主语、宾语或表语,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
which 用于指物,在句中作主语、宾语或表语,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
who, whom 用于指人,who 用作主语和表语,whom用作宾语。在口语中,有时可用who代替whom,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。(who 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?(whom 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)关系词只能用that的情况:
①先行词被序数词或形容词最高级所修饰,或本身是序数词、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。
当先行词指人时,偶尔也可以用关系代词who。
②被修饰的先行词为all, any, much, many, everything, anything, none, the one等不定代词时,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?
当先行词指人时,偶尔也可以用关系代词who。
③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。
注意: 当先行词指人时,偶尔也可以用关系代词who。例如:
Wang Hua is the only person in our school who will attend the meeting.
王华是我们学校唯一将会出席这个会议的人。
④先行词里同时含有人或物时,只能用that.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。
⑤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?
⑥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。
(4)关系词只能用which,而不用that 的情况:
①先行词为that, those时,用which, 而不用that.例如:
What’s that which is under the desk?
在桌子底下的那些东西是什么?
②关系代词前有介词时,用which,而不用that.例如:
This is the room in which he lives.
这是他居住的房间。