I really can't understand _________ her like that.A you treat B you to treatC why treat D you treating请分析一下为什么,

I really can't understand _________ her like that.A you treat B you to treatC why treat D you treating请分析一下为什么,
I really can't understand _________ her like that.
A you treat B you to treat
C why treat D you treating
请分析一下为什么,

I really can't understand _________ her like that.A you treat B you to treatC why treat D you treating请分析一下为什么,
understand 后面跟动词要求用动名词,答案D treating 前面加上you ,作逻辑主语用,也可以用your

如果在A选项前面加个why，那么也可以。这样是why引导的宾语从句。
而D选项是逻辑主语you+现在分词，构成的独立主格结构。把you改成your、Mike、Mike's都是可以的。也就是作宾语时，有四种：代词宾格、形容词性物主代词、名词普通格、名词所有格。不明白的话，看语法书中的非谓语动词部分。有问题也可追问我啊刚才笔误，treating在这里不能叫现在分词了，因为是作宾语，所以是动名词...

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如果在A选项前面加个why，那么也可以。这样是why引导的宾语从句。
而D选项是逻辑主语you+现在分词，构成的独立主格结构。把you改成your、Mike、Mike's都是可以的。也就是作宾语时，有四种：代词宾格、形容词性物主代词、名词普通格、名词所有格。

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D对