文档介绍：高一英语
M1 U3 Grammar (1)
It’s the same in China — many people, some of whom are not overweight at all, are always going on diets or taking weight-loss pills, which are often dangerous. (L38)
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a non-restrictive clause
Grammar and usage
Non-restrictive attributive clauses
非限制性定语从句
1. 定语从句分为限制性定语从句(restrictive )和非限制性定语从句(non-restrictive)两种。限制性定语从句紧跟先行词,与先行词之间一般不加逗号;非限制性定语从句与主句之间通常用逗号分开。
Differences between the restrictive and non-restrictive attributive clauses.
1. His father, who works in Beijing, came back yesterday.
2. Shanghai, which is in East China, is developing rapidly.
Example 1
Conclusion 1
当先行词是地名、人名、世界上独一无二的事物或家庭唯一成员时,通常只用非限制性定语从句修饰。
1. I have a sister who / that works in a hospital. 我有一位在医院工作的姐姐。
2. I have a sister, who works in a ,她在医院工作。
Example 2
不只一位姐姐
只有一位姐姐
3. The magazines here which / that have nice pictures in them were written by him.
里面有漂亮图画的那些杂志是他写的。
4. The magazines here, which have nice pictures in them, were written by him.
所有的杂志都是他写的, 里面都有漂亮的图画。