问题描述:
问题解答:
楼上都正确
除此之外还可以是:When was the last time you were in Shanghai?/ When was your last time in Shanghai?
别人会回答six months ago/ a year ago,就能推断出此人有多久没来上海了
How long has it been since you came to Shanghai last time?
一般都这样问了,意思是:从你上次来上海到现在多久了?
How long haven't you been in Shanghai/
How long haven't you been in Shanghai?
when did you come to shanhai last time ?