when did you come hereA: Tow years agoB: For 2 years

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when did you come hereA: Tow years agoB: For 2 years

when did you come hereA: Tow years agoB: For 2 years
when did you come here
A: Tow years ago
B: For 2 years

when did you come hereA: Tow years agoB: For 2 years
选A,when did you come here? 是一个过去式,你什么时候来这儿的?是说你过去的某个时间点来这儿的,回答也要用过去式,two years ago,两年前,完整的回答是I came here two years ago.
如果问题是how many years have you come here? 你来这儿几年了?是说你来这而几年大的这个时间段,回答,for two years,完整的回答,I have come here for two years.

A

A 因为when问时间点不是时间段

A