it 的成分问题 - 柯帕斯英语网

False theories can yield true results, so even if an experiment works, it doesn’t prove that the theory it was designed to test it is true.

请问老师句子中的这个it 充当什么成分？

如果去掉这个it，意思和原来的句子一样吗？

it doesn’t prove that the theory it was designed to test it is true.

红字的it是多余的，导致句子结构错误，必须删去，得到：

it doesn’t prove that the theory (that) it was designed to test is true. 划线部分为定语从句。

曹荣禄 -

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Cyz 1秒前

it是 theory 。it is true是test的宾补，如果去掉这个it，宾补就缺少它的主语成分了。