1. The baby is Jack. / The baby is wearing red trousers. →The baby who is wearing red trousers is Jack. 2. The house is mine. / The house’s roof is brown. →The house whose roof is brown is mine. 3. The man is Mr Li. / I nodded to the man. →The man to whom I nodded is Mr Li. 4. This is the reason. / I must go earlier for the reason. →This is the reason for which I must go earlier. (for which = why) 5. This is the place. / I lived in the place 5 years ago. →This is the place in which I lived 5 years ago. (in which = where) 1.定义： 又称形容词性从句，在复合句中修饰名词或代词，起定语作用。 2.先行词： 被定语从句修饰的名词或代词 3.关系代词、关系副词： 引导定语从句的词 关系代词 关系副词 who, whom, whose, which, that when, where, why 在定语从句中作主语、宾语、定语 在定语从句中作状语 A dictionary is a book which gives the meaning of words. 句子主干： 定语从句： 先行词： 关系代词： 构成： A dictionary is a book. which gives the meaning of words a book which A dictionary is a book. / The book gives the meaning of words. 4. 分类：限定性定语从句与非限定性定语从句 限定性定语从句是句中不可缺少的组成部分，使先行词区别于同类其他事物; 主句和从句之间不用逗号隔开 非限定性定语从句是对主句先行词的补充说明, 没有这种从句不影响主句意思完整.一般用逗号把主句和从句分开 引导词: 关系代词和关系副词，作宾语时一些关系代词可以省略 引导词: who, whom, whose, which, of which, when, where等，不用that或why,不能省略 限制性定语从句举例： 1. The teacher told me that Tom was the only person that I could depend on.? 2. China is a country which has a long history.? 3. In the street I saw a man who was from Africa.? 非限制性定语从句举例： 1. His mother, who loves him very much, is strict with him.? 2. China, which was founded in 1949, is becoming more and more powerful.? 3. Last summer I visited the People’s Great Hall, in which many important meetings are held every year.? 关系代词的用法 指代内容 所做成分 是否可省略 that 人; 物 主语, 宾语 作宾语可省 which 物 主语, 宾语 作宾语可省 who 人 主语, 宾语 作宾语可省 whom 人 宾语 可省 whose (人/物)的 定语 不可省 1. who指人,作主语或宾语 (作宾语可略） The boys who are playing football are from Class One. A person who steals things is called a thief. 2. whom指人,作宾语 (作宾语可省略,如介 词提前则不能省) The man (whom/who) I talked to is Mr. Li. The man to whom I talked is Mr. Li. 3. whose 在定语从句中作定语，与后面的 名词为所属关系,可译为“其”。whose多指人，也可指物，指物时可与 of which互换使用。 He has a friend whose father is a doctor. The classroom whose door is broken will soon be repaired. =The classroom the door of which is broken will soon be repaired. Do you like the book whose cover is yellow? =Do you like the book the cover of which is yellow?? Do you know the girl whose hair is very short in our class? He is the student whose pencil I broke yesterday. 4. which 指物，在定语从句中做主语或宾 语，做宾语时常可省略。 1) Football is a game which is liked by most boys.?? 2) The film ( which ) they went to see last night was not interesting a ... ...
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