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before after
before
before[英][biˈfɔ:] [美][bɪˈfɔr,-ˈfor]
prep.在……之前;先于,优于;当着……的面;与其……
conj.在……之前;在……以前;比……早些;与其……
adv.先前,从前;在前,在前方
时间上:before 可用在时间状语从句中,例如:He has left the room before I came in.
位置上:in front of 在……前面,是指两个独立的物体,例如:The post office is in front of the shop.
in the front of在……的前部,是指一个东西在另外一个东西的前部,例如:He sits in the front of the classroom.
after
adv.[表示位置]在后面,在后,背后;向后[表示时间]以后,之后,后来,过后,随后
prep.[表示位置、空间]在…后面,在…背后,在…之后[表示时间]在…以后;在…之后,于…后,迟于
上up-u,下-down-d,左-left-l,右-right-r,前-front-f,后-back-b
“在……之前”的英文是before,“在……之后”的英文是after。before的例句:1、Theyarrivedthedaybeforeyesterday.
before[bɪ'for][词典释义]prep.1.在...以前2.(指顺序、重要性等)在...之前,先于3.由...考虑中4....ad.1.较早2.以前;
between......and.......from.....to......求采纳!
after,before
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