引导定语从句的关系代词常见的有that, which, who whom等。关系代词放在先行词和定语从句之间， 起连接作用，同时又作定语从句的一个成份。
The man (that/who told us a funny story) is in the next room. I lost the book(( that/which ) you gave me). 宾语
Attributive clause
that为引导词，在从句中代替photos
看我在旅行时照的照片。
翻译成：…..的
先行词：是被定语从句所修饰的词,通 常是名词或代词。 关系词： 是引导定语从句的词，在从 句中替代先行词。 注意: 关系词要在从句中充当一定的 成分。关系代词所替代的词在从句中 不能再出现。
定语从句一般要放在先行词之后。因 此，定语从句在句中的位置随其先行 词位置的变化而变化。如：
Have you seen the photos that I took on my trip? The photo that I took on my trip are on the desk.
that引导的定语从句可以修饰无生命 的东西，也可以修饰有生命的动物或 人。如： What’s the name of the animal that jumps about? Who is the girl that talked to you yesterday?
归纳：that,即指人又指物，作主语或宾语。 which,指物，作主语或宾语。 who, whom指人,who作主语,whom作宾语。 that,which,whom在定语从句中作宾语时，可省去。 1) A plane is a machine ________________ can fly. which/that which/that/ 不填 / 2) The car _______________________ my uncle bought last week was stolen. who/that 3) The students ________________ don’t study hard will not pass the exam. 4) The woman ___________________ you saw in whom/that/ 不填 / the park is our English teacher. 5) He talked happily about the men and books____ that __________ interested him greatly in the school.
2.它还在定语从句中担任一定的成分， 3. 同时连接先行词与它引导的定语从句。 （把主句和从句连起来）
什么是定语从句呢？ 概念： 在复合句中，修饰某一名词或代词 的从句叫定语从句,定语从句在句中 做定语成分。
先行词
引导词
Look at the photos that I took on my trip.
whose 在定语从句中作定语，表示引导词 与 whose 后的名词为所属关系。 whose 多指人，也可指物，指物时可与 of which 互换使用。
This is the book whose cover is blue.
This is the book of which the cover is
先行词 定语从句

English teacher. 主句: The woman is our English teacher. 从句的主语： you 从句的宾语： whom
3. A shoe shop is a shop (which sells shoes). 主句：A shoe shop is a shop. 从句的主语: which
关系代词如何引导定语从句
普通代词与关系代词的区别 I have a sister.She works in Shanghai. 代替 sister
I have a sister who/that works in Shanghai.
普通代词：只起代替的作用（如上例she) 关系代词： （如上例who/that） 1. 除了代替先行词外，
blue.
This is the book the cover of which is
blue.
2. Work in pairs. Find examples from Activity 1.
1 Many people that have been to Australia often say ... the subject of the clause 2 It’s one of the most beautiful beaches that I’ve ever seen. the object of the clause
1. The students (who don’t study hard) will not pass
先行词 定语从句
the exam. 主句: The students will not pass the exam. 2. The woman (whom you saw in the park) is our
Join two sentences into one: The boy is my brother. He helped me. 1. The boy that helped me is my brother. The film is interesting. They saw it last night. 2. The film they saw last night is interesting. The students will not pass the exam. They don’t work hard. 3.The students that don’t work hard will not pass the exam.