基本信息
定语从句的要点及练习
在复合句中，修饰某一个名词或代词，或修饰整个主句的从句叫做定语从句。它位于被修饰的词后面，其作用相当于一个形容词。被修饰的词叫做先行词。定语从句常由关系代词who, whom, whose, that, which, as 和关系副词when, where, why 引导。
一、先行词指人时，关系代词可用who, whom, that。who在从句中只作主语，whom在从句中只作宾语，that在从句中可作主语或宾语，在从句中作宾语的关系代词常被省略。如：
A friend who/that helps you in time of need is a real friend.
The students (whom/that) you teach are now doing experiments.
二、行词指物时，关系代词用that 或which, 在从句中可作主语或宾语，作宾语时，可省略。如：
These are the trees that/which were planted last year.
Is this the book (that/which)you are looking f?
三、当先行词指物时，在下列情况下只能用关系代词that, 而不用which:
十一、as 引导的定语从句用于the same… as , as … as , so… as 等结构中。As 在定语从句作主语或宾语，如：
I have the same trouble as you (have)
We never heard such songs as are taught on the radio.
思考题：
He is such a clever boy __________ everybody love him.
A. as B. that C. which D. f
As 还可以引导一个非限制性定语从句，表示“正如……那样”。常见有：as you know, as is known to all, as you see, as can be seen, as has been pointed out, as everybody expected, as is expected, as expected……等。可置于主句前或主句后，代替前面或后面提到的事实，在句中作主语或宾语。如：
China has sent up another man-made satellite, as was announced.
思考题：
He won the game , __________ is beyond our expectation.
A. as B. which C. that
巩固练习题：
1.Most of the classmates want to know the way _________ he learns new wd.
A. which B. in which C. by which D. about which
2.The international research group was made up of 20 scientists, _______ China.
A. half of which was B. three fifths of whom were C. most of them werer D. they were mostly
3.Li Ping isn’t such a boy _____ will tell a lie.
A. who B. which C. like D. as
4.________ breaks the law should be punished.
A. No matter who B. Whoever C. All D. Who
5.Is this little shed _____ Tom was bn?
