have you got any explanation to the question__he came here for the day before yesterday?为什么用what?

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have you got any explanation to the question__he came here for the day before yesterday?为什么用what?

have you got any explanation to the question__he came here for the day before yesterday?为什么用what?
have you got any explanation to the question__he came here for the day before yesterday?
为什么用what?

have you got any explanation to the question__he came here for the day before yesterday?为什么用what?
因为句子后面有一个for,what for =why.
句子还原后是he came here for ...the day before yesterday.
由于提问是问what的内容,所以是这样的结构
这是同位语从句question后是它的同位语

有个FOR,for what 如果没有for,就要用why.
意思基本上一样。

what for 表示为什么的意思,可以等效为“why” ,看后面的从句,“what he came here for the day before yesterday?” 去掉时间状语 the day before yesterday,就变成了what he came here for? 意思为他为什么来这里(他来这里是为了什么)

定语从句

呃,那个不可能是定语从句,定语从句没有what这个关系代词

what是和后面for连在一起的,what for 为了什么
这句是定语从句,先行词 the question,后面的从句其实应是这样:he came for what
the day before yesterday?
把what提前,后面改陈述句,就成了上面的句子