一：In: in return for 作为回报；作为报 in praise of 表扬 in exchange for 交换，调换 in a hurry 匆忙地
in tears 哭泣，掉泪 in common 共用的,共有的 in general 一般来说,大体上 in half 成两半
in itself 本质上,就其本身而言 in memory of 纪念 in order 按顺序,按次序 in particular 特别,尤其
in person 亲自,本人 in place of 代替,取代,交换 in practice 在实践中,实际上 in public 公开地,当众
in quantity 大量 in relation to 关于,涉及 in short 简言之,总之 in spite of 尽管 in the form of 以某种形式
in the company of随着 in the course of 在...期间/过程中 in the distance 在远处 in the end 最后,终于
in the face of 即使;在...面前 in the first place 首先 in the future 在未来 in the least 丝毫,一点
in touch 联系,接触 in vain 徒劳 in debt 欠债,欠情 in difficulty 处境困难 in effect 实际上,事实上 in search of 搜索
in reality (=in fact, really) 事实上 in relation to 关于, 有关 in good condition 处于良好状态 in/with respect to (=concerning) 有关,关于
in response to(=as an answer to) 回答,反应 be response for 对…get out of负责, 是造成…原因 in advance=ahead of time提前
in memory of 为纪念..; in hopes of 为期待.. in support of 为支持… in secret 秘密地 in private 私下
in total 总计 in a sense=in a way=to a degree 在某种意义上 in all 总共 in one's twenties 在某人二十几岁时
in public 公众,公开地 in order to 为了…… in the end 最后,终于 in surprise 惊奇地 result in 导致
in accordance with 与...一致,按照 in any case 无论如何 in case of 假如,防备 in the first place首先
in no case 绝不 in case (that) 以防、万一 sb be in charge of sth sth be in the charge of sb
be abundant in富 all in all, be located in believe in 信仰 be in touch with 与…有接触, 有联系
bring in 引进，引入；赚钱，获利 break in 打断，闯入 (be) in contact with 与…有交往 cut in插入
fall in love with sb 爱上某人 in favour of …支持，赞成 in hand 现有在手头；在进行中 give in 屈服；投降；
in honor of …为…向…表示敬意，为庆祝 hand in 交上 in line 成一直线；整齐；一致 major in 专攻，专修
take pride in=be proud of 以…自豪 settle （down）in 定下心来，安家落户 (be)in sight 看得见
in support of 以便支持 in one's turn轮到某人(做事)。 in turn 结果、反过来；依次 in a word总之
in other words in cash in one’s turn wait in line in time fit in in order in despair
in rags star in in ruins in trouble lie in=consist in take in in addition (to)
in the distance 在远处 in the long run 最终，从长远观点看 in a mess 乱七八糟, 处境困难 in memory of
.
in one’s opinion in sum . in terms of in place of in place in no time in that in need of be engaged in be involved in be dressed (up) in in debt crowd in be buried in result in
二: On: on one's way to 某人在去……的路上 on foot 步行,走路 on the weekend 在周末 on the left (right) on
on the radio 通过收音机(无线电广播) one after another 顺次 on occasion= once in a while 偶尔，间或、有时
on behalf of 代表 on board 在船(车/飞机)上 on business 因公出差 on duty 上班,值班 on earth 究竟,到底
on fire on guard 站岗,值班 on one's guard 警惕,提防 on schedule 按时间表,准时 play a trick on
on the contrary 正相反 on the point of 即将...的时刻 on the spot 在场;马上 on the whole 总的来说,大体上
on(an/the) average 平均,通常 on one's own on a large scale have a report (talk) on
on the one hand…on the other hand… on purpose=by accident on account of =due to =owing to focus on
on no account get on well with live on agree on/upon on the contrary on occasion
be based on/upon call on (sb to do sth) on condition that…. on no condition make a good impression on sb.
depend on/upon 依靠 feed on 以…为主食 from now on 从现在起 on hand 现有；在手边；临近
hold on keep one's eyes on look down on look on look on …as late on pass on put on rely on =depend on/upon on sale carry on turn on on time (=punctually) 准时
play jokes on , live on play tricks on hang on 等候 spy on carry on focus on
三：for : account for 解释;占据 ask for a day off请一天假 apologize to sb. for sth.为某事向某人道歉
apply for 申请 apologize to sb. for sth. 为某事向某人道歉 be familiar to be responsible for负责某事
be for / against …支持/ 反对… be famous for因……而著名 be good/bad for对……有益/害
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