第1个回答 2023-11-30
after
after 表是“某一个时刻之后”通俗点就是‘几点几分之后’,我看例句:
He goes to work after 7:30.
She told me she would be here after 6:00.

当然,after 还可以表示某个“事件”之后,例如:
People will visit friends after New Year's Day. 新年之后,人们会拜访朋友。
The rose after the rain. 雨后河水上涨。

after 还可以用作连词,后跟时间状语从句,此时,要掌握连词 after 和介词 after 之间的转换。
After he had had breakfast, he lookd over the newspapers and left. 他吃过早饭后,翻了翻报纸就走了。(连词)
=After having had breakfast,he lookd over the newspapers and left.

in
in 表示“之后”就比较简单,放在时间段之前,用在将来时中,表示“一段时间之后”例如:
He'll come back from London in about a month. 他大约一个月之后就从伦敦回来。
【重点】关于这一点,重点在于 in 后面出所有格的时候,到底是用 ‘s 还是 s' 的问题,我们先看例子:
The next train will arrive in five hours' time. 火车将在5小时之后到达。
句中,五个小时 five hours 中hour要加 s,后面再跟上 time 以表达“五个小时的时间”,这里“五个小时的”就只加一个丿----five hours' time。

当然,如果没有 time 一词,就不会有这个问题,直接 in five hours;另外,如果不是个复数时间名词,就只加 ‘s,如:
in a week's time = in a week (week是单数,不会影响发音,就加‘s)
in two weeks' time = in two weeks ( 两周就是个复数词了 weeks, 如果再加 ‘s 造成读音不方便,所以只加一个丿----weeks' )