back in the day/before/then 那時(英文的意思和用法

back in the day when 回到那時,當…
back in the days when
back before 回到那時,在…之前(省掉 in the day
back in the day before 回到那時,在…之前
when I was little 當我小時候

Practice

remember back in the day when 記得當時