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在英语语法中,名词性从句是一个非常重要的概念,可以在句子中充当名词的作用。名词性从句可以分为主语从句、宾语从句、表语从句和同位语从句。在这些从句中,有时候可以省略一些部分,从而使句子更加简洁。
主语从句省略
主语从句是一个句子中充当主语的句子。在有些情况下,主语从句中的主语可以被省略,例如:
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That he's never been to China surprises me. (“that he's never been to China”是主语从句,其中的主语“he”可以被省略)
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Whether we should go to the party or not is still a question. (“whether we should go to the party or not”是主语从句,其中的主语“we”可以被省略)
宾语从句省略
宾语从句是一个句子中充当宾语的句子。在有些情况下,宾语从句中的主语或谓语可以被省略,例如:
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She believes (that) he is innocent. (“that he is innocent”是宾语从句,其中的主语“he”可以被省略)
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I don't know (whether) he will come or not. (“whether he will come or not”是宾语从句,其中的谓语“will”可以被省略)
表语从句省略
表语从句是一个句子中充当表语的句子。在有些情况下,表语从句中的主语或谓语可以被省略,例如:
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The problem is (that) we don't have enough time. (“that we don't have enough time”是表语从句,其中的主语“we”可以被省略)
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His suggestion is (that) we should start early. (“that we should start early”是表语从句,其中的谓语“should start”可以被省略)
同位语从句省略
同位语从句是一个句子中充当同位语的句子。在有些情况下,同位语从句中的主语或谓语可以被省略,例如:
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The fact (that) he lied surprised me. (“that he lied”是同位语从句,其中的主语“he”可以被省略)
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The news (that) he got the job made me happy. (“that he got the job”是同位语从句,其中的谓语“got”可以被省略)
在实际使用中,省略名词性从句的主语或谓语可以使句子更加简洁,但需要根据具体情况进行判断。同时,在写作中也需要注意避免过度省略,以免影响语言的准确性和清晰度。