看到有人这样讲“in a few days= in a few days’ time =a few days later

in a few days for a few days in a few days after a few days用法区别 in a few days for a few days 区别? a few days a few days ago for a few days a few days later 和 a few days ago 有什么区别? a few days before与a few days later的区别是什么? quiet a few days还是a quiet few days for a few days 是什么意思 in a few days 是什么时态标志词? Mr Black___(leave)Shanghai in a few days.