oh,my god,i must have left my passport on the plane.you never leave things
问题描述：
oh,my god,i must have left my passport on the plane.you never leave things
本题中的现在时态妥当吗?似乎过去完成时更好些
答
must/can't/may + have done 就是表达对过去的猜测或肯定
而 you never leave things 表示的是一种事实 用现在时没问题