高中英语语法知识点：定语从句及其关系代词与副词
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1 在定语从句中，被修饰的名词或代词称为先行词;引导定语从句的连接词称为关系词, 其中that、which、who称为关系代词,where、when、how,why称为关系副词
2. 关系代词who、whom 和whose指人,分别在从句中作主语、宾语和定语。which指物that多指物, 有时也指人,它们在从句中可以作主语或宾语。
定语从句中关系代词作从句宾语时可以省略。
This is the thief (that/who/whom) we have been looking for these days. (这个就是我们近日一直在找的小偷。)
Please find a room which is big enough for all of us to live in. (请找一间足够大能住下我们全体的房间。)
3. 关系代词as
such + n + as … the same +n+ as …指物或整个句子.
These houses are sold at such a low price aspeopleexpected.
He is not the same man as he was (像 … 一样的;像 … 之类;和 … 一样)
4. 关系副词。
when或where引导定语从句时,它们在从句中分别作时间状语和地点状语。
This is the room where they had a quarrel a week ago. (这是一个星期前他们吵架的房间。)
I can never forget the day when I first saw you. (我永远不会忘记第一次见到你的日子。)
why 表示原因。在从句中用作原因状语。
The reason why she is absent from school is that she was ill.
how 表示方式。在从句中用作方式状语。
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