could you tell me ( )? what are they doing that for, why they are doing for ,why are they doing that, what they are doing that for 为什么选d

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couldyoutellme()?whataretheydoingthatfor,whytheyaredoingfor,whyaretheydoingthat,whattheyaredoingthat

could you tell me ( )? what are they doing that for, why they are doing for ,why are they doing that, what they are doing that for 为什么选d
could you tell me ( )? what are they doing that for, why they are doing for ,
why are they doing that, what they are doing that for 为什么选d

could you tell me ( )? what are they doing that for, why they are doing for ,why are they doing that, what they are doing that for 为什么选d
因为是要带从句,所以what are they doing that fo 和 why are they doing that是错的,要用陈述语序.why提问原因,不能与for搭配,只能选what they are doing that for

首先 could you tell me .....这个结构后面的从句要用 陈述语气 因此 排除了 A C
其次 why是表示原因
doing that for 介词后面需要跟宾语 构成 介词宾语短语，而这个宾语又要提到前面做连接词 D项中的what可以表示这个功能...

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首先 could you tell me .....这个结构后面的从句要用 陈述语气 因此 排除了 A C
其次 why是表示原因
doing that for 介词后面需要跟宾语 构成 介词宾语短语，而这个宾语又要提到前面做连接词 D项中的what可以表示这个功能

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Could you tell me+疑问词+宾语从句,宾语从句就是主语+谓语+宾语,也就是What is your name?变为Can you tell me what your name is?所以Could you tell me why are they doing that?是错的，应改为Could you tell me why they are doing that?

宾语从句必须用陈述句语序b,d符合。b句是个错句，why是副词不能做for 的宾语，所以选d.

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