six years__since she left chengdu.A has passed B had passed C passed

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six years__since she left chengdu.A has passed B had passed C passed
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six years__since she left chengdu.A has passed B had passed C passed
six years__since she left chengdu.A has passed B had passed C passed

six years__since she left chengdu.A has passed B had passed C passed
A
词句时态为现在完成时,left chengdu是过去的动作,故用过去式,由于这个动作对现在造成影响,强调此动作现在已经完成.(注:不是过去已经完成)因此用现在完成时态:has+过去分词left.
句意为:她离开成都已经有六年了.

A
她离开成都已经有六年了

A