Before的反义词：after。Before意思为：在……之前。反义词为：after，意思为：在……之后。
before
英语音标：[bɪˈfɔː]
美语音标：[bɪˈfɔr]
prep.
之前;在…以前;在…面前(或前面);(次序或排列)在前面;当面
conj.
在…以前;到…为止;到…之前;以免;不然;（宁可…而）不愿
adv.
以前;过去;已经
例句
It was many years before the full story was made public.
许多年之后，事情的全貌才公之于众。
It would be a good idea to call before we leave.
我们出发之前打个电话是个好主意。
I need you to phone the story in before five.
我要你在五点钟前把整件事电告单位。
