in a few 什么时态?

in a few 什么时态? a few times与什么时态连用 A few years later 用什么时态? a few times与什么时态连用? in a few days 是什么时态标志词? 1英语问题：“in a few days”是什么时态? in the last few years 用什么时态 in the past few years 用什么时态? 请问a few ,few ,little,a little 后跟什么,一般是什么时态? in the past few years和in the last few years有什么区别,分别用什么时态? in the last few years是什么时态 in the last few day 用什么时态 是现在进行时吗