I don't know that what means.大神分析一下这个句子里每个单充当什么语.that 可以省略吗?还是当一个指示代词?可以是“I don't know that means what”吗?

I don't know that what means.大神分析一下这个句子里每个单充当什么语.that 可以省略吗?还是当一个指示代词?可以是“I don't know that means what”吗?
I don't know that what means.大神分析一下这个句子里每个单充当什么语.
that 可以省略吗?还是当一个指示代词?可以是“I don't know that means what”吗?

I don't know that what means.大神分析一下这个句子里每个单充当什么语.that 可以省略吗?还是当一个指示代词?可以是“I don't know that means what”吗?
则个句子错,i don't know waht that means.

that 是宾语
what 是链接词，整个what means是 修饰that的,从句又是主语又是宾语，麻烦您再细讲可以吗？ I don't know that what means. I don't know that means what. I don't know what that means. 哪个对哪个错？I don't know that what means. 也...

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that 是宾语
what 是链接词，整个what means是 修饰that的,从句

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that不可以省略，that在句子里充当主语。