1、who，whom，whose 和 that 作为定语从句的引导词，称为关系代词。我们现在来看一下先行词指人时，这四个关系代词的使用问题。下面用句子合并的方法来分析。一、定语从句用 who 或 that 做引导词，在从句中做主语。 把句变为句的定语从句，句中的 the boy 做定语从句的先行词。在句中 he 指句中提到的 the boy 也就是定语从句的先行词，he 在句中做主语，因此要用 who 和 that 引导定语从句，代替句中的 he，也就是说 he 就不能出现在定语从句中了。由此得到句The boy who broke the window is called Jack.注意：一般情
2、况下定语从句要紧挨先行词。请把下面每组的两句话合并为一句。The person must pay for it. / He lost the library book.The person who lost the library book must pay for it.The boy is very clever. / He is wearing the black jacket.The boy who is wearing the black jacket is very clever.二、定语从句用 who，whom 或 that 做引导词，在从句中做宾语。因为是做宾语，所以这些引导词
3、可以省略。请分析下面两个简单句：句Do you know the young man？句We met him at the gate.把句变为句的定语从句，句中的 the young man 做定语从句的先行词。在句中 him 指句中提到的 the young man 也就是定语从句的先行词，him 在句中做宾语，因此要用 whom，that 或 who 引导定语从句，代替句中的 him，也就是说 him 就不能出现在定语从句中了。由此得到句Do you know the young man who/that/whom we met at the gate？(who/that/whom 可以省
4、略，句子可以写作：Do you know the young man we met at the gate？)请把下面每组的两句话合并为一句。Mr. Lee has come ./ You want to see him.Mr. Lee who/whom/that you want to see has come.This is the girl.He worked with her in the office./This is the girl whom /that / who he worked with in the office.三、定语从句用 whose 做引导词，在从句中作定语表示
5、“某些人的” 。请分析下面两个简单句：句The girl is staying at home today.句Her mother is ill.把句变为句的定语从句，句中的 the girl 做定语从句的先行词。在句中 her 指句中提到的 the girl 也就是定语从句的先行词，her 在句中做定语，因此要用 whose 引导定语从句，代替句中的 her，也就是说 her 就不能出现在定语从句中了。由此得到句The girl whose mother is ill is staying at home today.请把下面每组的两句话合并为一句。The boy is called Li
6、Lei. / His parents were dead in the flood.The boy whose parents were dead is called Li LeiMr. Wang is the policeman./His house caught fire last Sunday.Mr. Wang is the policeman whose house caught fire last Sunday.巩固练习：一、用定语从句把下面两句话合并为一句。1. Lets ask the man .He is reading the book over there.2. The g
7、irl is Peters sister. We saw her yesterday.3. This is Uncle Li. He mended computers for us.4. I know the young man. You mean him.5. I know the boy. His father is a scientist.二、单项选择1. Have you seen the man _ car was stolen just now？A. its B. its C. whose D. which2. On the bus I saw a student _ I thou
8、ght was your brother.A. who B. whom C. which D. whoever3. The foreigner _ visited our school yesterday is from Canada.A. that B. which C. whom D. /4.Here is the man _ you are looking for.A. which B. whom C. what D. where答案：一、1.Lets ask the man who/that is reading the book over there.2.The girl that/whom/who we saw yesterday is Peters sister.3.This is UncleLi who/that mended computers for us.4.I know the young man whom/that/who you mean.5.I know the boy whose father is a scientist.二、1-4 C A A B
