The factory in which his father works is in the west of the city.

(介词+ which可以代替where)

This is a place which/that I wan ted to visit.

Shan ghai is the city where I was born.

九、Why引导的定语从句，why做原因状语。

I know the reason why he came late. （ for + which 可以代替why）

The reas on why / for which he was late was that he was ill.

十、关系代词在从句中作主语，谓语动词的数与先行词保持一致。

The stude nt who is good at En glish studies hard.

The stude nts who are good at En glish study hard.

十一、定语从句可分为两大类，即限制性定语从句和非限制性定语从句。

①限制性定语从句是先行词在意义上不可缺少的定语，如果去掉的话，主句的意思就不完整，意义就表述不明。这种句型一般定语从句紧接先行词（不用逗号隔开）如：

I was the only person in my office who was invited.

②非限制性定语从句。它与主句的关系不十分密切，只是对先行词起补充、说明的作用，也就是说即便去掉定语从句，句意也不受影响。主从句之间常用逗号分开，且非限制性定语从句不能用that来引导。

This was the American Civil War, which lasted 4 years before the North won in the end.

一、用关系代词（that、which 、who、whom 、whose）或关系副词（when、where、

why ）填空。

1 . This is the man ______________ wants to see you.

2 . The student _________________ answered the question is Zhang Hua.

3 . The man ________________ you went to see has come.

4 . The man _________________ I met yesterday lent me some money.

5 . The woman ______________________ you saw is our geography teacher.

6 . Here is the pen ______________ you lost the day before yesterday.

7 . These books ___________________ you lent me were very useful.

8 . A clock is a mach ine ________________ tells people the time.

9 . This is the shirt _____________________ I bought yesterday.

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