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概念:在复合句中修饰名词或代词
的句子.
Mary is a beautiful girl.
Mary is a girl who has long hair.
形容词作定语
句子作定语,修饰girl, 叫做定语从句
Mary is a girl.
Mary has long hair.
合并为一个句子
Mary is a girl who has long hair.
先行词
关系词
定语从句
Mary is a girl who has long hair.
关系代词
关系副词
which, who, whom, whose, that
Where, when，why
关系代词:
1. who指人,作主语或宾语 (作宾语可省略）
The man who I talked with is our teacher.
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 nodded to is Mr. Li.
The man to whom I nodded is Professor Li.
3.Whose 用来指人或物，(只用作定语, 若指 物,它还可以同of which互换）
They rushed over to help the man whose car had broken down. 那人车坏了，大家都跑过去帮忙。
Please pass me the book whose (of which) cover is green.
请递给我那本绿皮的书。
4. which 指物，作主语或宾语 (作宾语可省略,