名词从句单项选择练习题An opinion is ______ someone believes is true but has not been proved.A.that B.what C.which D.whether请从英语语法上详细讲解一下此题,答案是B,但为什么不选A?

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名词从句单项选择练习题An opinion is ______ someone believes is true but has not been proved.A.that  B.what  C.which  D.whether请从英语语法上详细讲解一下此题,答案是B,但为什么不选A?
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名词从句单项选择练习题An opinion is ______ someone believes is true but has not been proved.A.that B.what C.which D.whether请从英语语法上详细讲解一下此题,答案是B,但为什么不选A?
名词从句单项选择练习题
An opinion is ______ someone believes is true but has not been proved.
A.that B.what C.which D.whether
请从英语语法上详细讲解一下此题,答案是B,但为什么不选A?

名词从句单项选择练习题An opinion is ______ someone believes is true but has not been proved.A.that B.what C.which D.whether请从英语语法上详细讲解一下此题,答案是B,但为什么不选A?
选择从句连词有个简单的办法,你就找准主句和从句,一般有三种情况:
1、如果待选的这个连词在主句里占有一个成分,在从句里也占有一个成分,那么就选what
2、如果待选的这个连词在主句里不占有一个成分,而在从句里占有一个成分,就选that或which,这个要考虑是不是定语从句
3、如果待选的这个连词在主句里不占有一个成分,在从句里也不占有一个成分,就选疑问副词when或where什么的
PS:以上提到的“一个成分”是指主语、谓语或宾语
PS:祝你高考成功,考上理想的大学