什么叫主语从句?

如题所述

主语从句,即主句中的主语由句子担任,常看作单数,为名词性从句的一种类型。引导词常有 what、who、whether、that 等,what 在从句中充当成分(主语、宾语),that 在从句中常只作为连词,不充当句子成分。

    例:What she said makes us very unexpected.

    (主语部分:What she said,  引导词:what)

    In fact, whether John will go for a picnic or not has no effect on our choice.

    (主语部分:whether John will go for a picnic,  引导词:whether)

    Who will abtain the first award still be unknown before the match is over.

    (主语部分:Who will abtain the first award,  引导词:Who,  时间状语从句:before the match is over)

    注:

    主语从句中时态不受主句影响。

    形式主语也可看作主语从句,主语为连词后的从句部分。

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