although he was lived with us four years,he...us much impression答案是hasn`t left为什么不是didn`t leave或者doesn`t leave

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althoughhewaslivedwithusfouryears,he...usmuchimpression答案是hasn`tleft为什么不是didn`tleave或者doesn`tleaveal

although he was lived with us four years,he...us much impression答案是hasn`t left为什么不是didn`t leave或者doesn`t leave
although he was lived with us four years,he...us much impression
答案是hasn`t left为什么不是didn`t leave或者doesn`t leave

although he was lived with us four years,he...us much impression答案是hasn`t left为什么不是didn`t leave或者doesn`t leave
doesn`t leave 时态就不对了,讲的是过去的事情.
选择题要求选出最恰当的答案,现在完成时强调过去的事情对现在的影响,在这句句子里比一般过去时要好.所以用hasn`t left而不是didn`t leave.

是时态问题,前面是过去时,虽然已经和我们生活了四年,这件是已经完成,所以应该用现在完成时强调过去。

应该是he has lieved with us four years 吧,用完成时的原因就是这样的,从过去四年到现在他都没有给我们留下什么印象,是一个时间段。