2022英语四级语法词汇解析:as, which 非限定性定语从句
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    1. as引导的非限制性定语从句
    as有时作关系代词,代替整个主句,对其进行说明
    但as也回用于固定搭配,像as we all know, as it is known, as is known to all, as it is, as is said above, as always mentioned above, as is usual, as is often the case, as is reported in the newspaper等。
    as在非限定性定语从句中作主语、表语或宾语,且引出的从句位置比较灵活,可位于句首或句末,也可置于主句中间。
    eg. As we all know, Jack London is a famous American writer.
     
    2. which引导的非限制性定语从句
    ① which指代主句中的名词。
    eg.These apple,which were bought by my father,are very sweet.
    ② which指代主句中的形容词。
    eg.She was very patient towards the children,which her husband seldom was.
    ③ which指代主句中的某个从句。
    eg.He said that he will love her forever,which was not true.
    以上就是今天为大家带来的关于非限制性定语从句的知识点了,是不是非常丰富呢?学好从句最重要的就是掌握好引导词,引导词虽然数量较多,但都有规律可循,所以大家不用着急,一点点的记住就行。
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