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必修3《Grammar》最新PPT课件优质课下载
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1. My mother, whom you met last year, keeps telling me not to take them because they are dangerous.
non-restrictive attributive clauses:
2. It’s the same in China—many people, some of whom are not overweight at all, are always going on diet or taking weight-loss pills, which are often dangerous.
注意：非限制性定语从句即使省略也不影响 主句意义的完整。
1. I have a sister who / that works in a hospital.
2. I have a sister, who works in a hospital.
Example 1
不只一位姐姐
只有一位姐姐
Discussion
Look at the following examples and tell the differences between the sentences.
我有一位在医院工作的姐姐。
我有一位姐姐，她在医院工作。
Conclusion 1
1. 限制性定语从句与先行词关系密切,是先行词_______的部分,如果去掉它，主句意思 不明确。
2. 非限制性定语从句是对先行词的补充或说明,去掉它__________的意思。
不可缺少
不会影响主句
This is the house (which/ that )we bought last month.
2. The house, which we bought last month, is very nice.
3. He seems not to have understood what meant, which greatly upsets me.
Example 2
限制性定语从句
非限制性定语从句