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差别在于这个从句在整个句子中充当的成分,做什么成分就叫什么从句。关系词或代词的作用就是引导这些从句。
主语从句 充当 主语成分,如:(What caused the accident) remains unknown。其中What caused the accident就是主语从句。
最常见的主语从句是形式主语it句型,如It is certain that he will win the match。
以此类推,表语从句His suggestion is( that we should stay calm.)
宾语从句I don’t know( if there will be a bus any more.)
状语从句I will call you (as soon as I arrive in Beijing.)
定语从句He lives in a room (whose window faces south.)
主语从句 充当 主语成分,如:(What caused the accident) remains unknown。其中What caused the accident就是主语从句。
最常见的主语从句是形式主语it句型,如It is certain that he will win the match。
以此类推,表语从句His suggestion is( that we should stay calm.)
宾语从句I don’t know( if there will be a bus any more.)
状语从句I will call you (as soon as I arrive in Beijing.)
定语从句He lives in a room (whose window faces south.)
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