In Those Days有没有以前的意思

In Those Days有没有以前的意思 in those days有没有在那些天的意思 In Those Days可以繁殖以前吗 In Those Days这个词可以泛指以前吗 in those days还是on those days he was rich in those days.求通俗的翻译 in those days应用什么时态中 you have no idea___ in those days There were few schools in those days. 以前没有是要断的意思吗?以前没有, these days和those days前要不要加in in those difficult days.为什么要用in啊,不是应该on ...day的吗?