5. whose通常指人，也可指物，在定语从句中做定语

　 eg. 　He has a friend whose father is a doctor.

　whose指物时，常用以下结构来代替：

　 eg. (1). The classroom whose door is broken will soon be repaired.

　　　 The classroom the door of which is broken will soon be repaired.

　　　 (2) Do you like the book whose color is yellow?

　　 Do you like the book the color of which is yellow?

3. 在带有下列词的句子中用that而不用which，

(1)当先行词是anything, everything, nothing , none等不定代词时；

(2)由every, any, all, some, no, little, few, much等修饰时等，这时的that常省略；

(3)先行词前有序数词或形容词最高级修饰时；

(4)先行词是序数词或最高级时；

(5)先行词中既有人又有物时；

(6)句中前面有which时。

2．如果which在从句中作“不及物动词+介词”的介词的宾语，注意介词不要丢掉，而且介词常放在关系代词which的前边，但有的则放在它原来的位置。

1．关系代词做从句的主语时，从句谓语动词的人称和数要与先行词保持一致。

4. that既可代表事物也可代表人。

关系代词在从句中作主语时不能省略，而当关系代词在从句中作宾语时，常常省略。

特别提示：

2. whom指人，在定语从句中充当宾语，常可省略。

(1) Mr. Liu is the person (whom) you talked about on the bus.

(2) Mr. Ling is just the man whom I want to see.

注意：关系代词whom在口语和非正式语体中常用who代替，可省略。

(3) The man who/whom you met just now is my friend.

•　　　 3. which指物在定语从句中做宾语时可省略

•　　　 (1) Football is a game which is liked by most boys.

•　　　 (2) This is the pen (which) he bought yesterday.

1. who指人在从句中做主语

(1)　The boys who are playing football are from Class One.

(2)　Yesterday I helped an old man who had lost his way.

限定性定语从句

2．你能划出下面句子中的定语从句吗？

As a Global Environmental Ambassador(大使) , Gong Li urges the public to give up habits that are harmful to the environment .

1．比一比，看看谁想出的含有定语从句的句子最多？