401.instead of (in place of)代替，而不是……
402.instruct...in (=teach)教，指导，训练某人……
403.insure... for把……保险(多少钱);ensure使安全;assure...(of)使……确信，保证
404.insure...against保险……以防
405.intend...for打算把……给
406.(be) intent on专心致志，坚决
407.in the interests of符合……的利益
be interested in对……感兴趣
408.interfere in干涉，interfere with打搅，干扰
409.at intervals每隔一会儿，每隔一段距离
410.intervene in干预
411.invest in投资
412.be involved in (=become connected or concerned)卷入，参加
413.by itself (=alone, without help)单独地，靠自己
414.in itself本身;of itself自发，自然
415.be jealous of妒忌
416.jump at (=to be eager to accept)抢着接受，
417.jump on (=scold, tell of)叱责
418.junior to sb.年纪较……轻，职位较……低
419.(be) keen on喜爱，渴望
420.keep a close watch on (=keep a sharp lookout for)密切注视
421.keep...to oneself (=keep secret)不告诉别人
422.to (the best of) one’s knowledge据……所知
423.at large (=at liberty, free)在逃，逍遥法外
at large (= in general) 一般来说，大体上
at large (= at full length; with details) 详细地
424.lean against(背)靠着……
425.at least 至少;at most 至多
426.(not) in the least 一点(也不)，丝毫(也不)
427.at one’s leisure 在……有空的时候
428.lend itself/themselves to 适合于(某用途)
429.at length (=after a long time，at last) 终于
at length (=in detail，thoroughly) 详细地
430.go to any length 想一切办法，尽一切力量
431.be liable to (=be subject to) 易于……的，应受(罚)
432.be liable for 对……应负责任的
433.lie in 在于
434.in life 一生中
435.for life 终身
436.in the light of (=considering;taking into account) 考虑到，根据
437.throw light on (=make clear，explain) 使……更为清楚，提供线索，阐明
438.in line with (=in agreement with) 符合，一致 389.improve sth. (make sth. better)把原物改进
improve on (=produce or be sth. better than...)另做一物比原物更好
439.long for (=want very much) 渴望，希望得到
440.for long 很久，很长时间(否定句，疑问句中)
441.before long (=soon) 不久，过了不久以后
442.in the long run (=in the end ) 从长远来说，最后;in the short term (从短期来说)
443.(be) at a loss 不知所措
444.major in 主修(某课程)
445.as a matter of fact 实际上，事实是
446.by all means (=at all costs) 不惜一切
(=certainly) 当然行;by means of 用……;by no means 完全不，决不
447.on memory of 为纪念……
448.on the mend (=in the process of recovering) 好转，在康复中
449.mention sth. sb. 向某人提起某事
450.at the mercy of (=in the power of ) 任……摆布，在……支配下
451.be in a mess 乱七八糟，处境困难
make a mess of 弄乱，打乱
452.bear (or keep)...in mind (=remember) 牢记
453.bring (or call) to mind (=remember) 使回想起
454.by mistake (由于粗心，健忘原因而) 错误地
455.at the moment (=now) 此刻，现在
for the moment (=for the time being) 暂时
just a moment 稍等片刻
at the last moment 在最后一刻
456.in the mood for 有情绪去做……，有心境做
457.no more...than 和……一样都不……
458.for the most part多半，大多数，一般来说
459.at (the) most 最多，至多
460.make the most of 充分利用
461.be not much of (=not a good) 不是很好的……
be something of 有点……像……
462.name after 用……的名字命名
463.native to 所产的
464.by nature 天生的，生来
465.in mature 本质上
466.(be) in the nature of 属……性质
467.none other that 不是别人，正是……
468.above normal 高于正常 (温度)
469.for nothing (=free，without payment) 免费
470.nothing but 只有，不过……而已
471.to say nothing of (=not to mention) 更不用说……
472.do sth. at short notice 只给很少时间准备
473.until further notice 在另行通知前
474.take notice of (=pay attention) 注意
475.object to (=be opposed to) 反对
476.objection to (接动名词) 反对
477.on occasion (=now and then) 不时地，必要时
478.by occasion of (because of ) 由于
479.occupy oneself with (in) 忙于 (某事)
480.it occurs to sb. that... 某人想到……
481.once and for all = once and forever永远地
all at once (=suddenly, now) 立即，马上
once in a while (=occasionally) 偶尔
(just) for once就这一次
482.(all) by oneself 独自 (没有别人帮助)
483.operate on sb. 给某人做手术
operation n.come/ go into operation 开始运转
put/bring sth. into operation 使……投产，运转
484.be of the opinion 持有……的看法
485.in one’s opinion 按某人的看法
486.be opposed to... 反对……
487.be opposite to与……相反的
488.(be) in order (=acceptable) 合适的，恰当的in order井井有条，处于良好状态;out of order (=in bad condition) 出毛病，发生故障
489.made to order 定做的 (衣服)
490.originate in/from (=begin) 起源于，由……引起
491.on the outskirts (of) 在城郊
492.owe...to 把……归于……
493.on one’s own (=along, without help) 单独
494.of one’s own某人自己的
495.keep pace with 跟……齐步前进
496.go to great pains = take pains下功夫，努力
497.part with (=give up, sell) 舍弃，卖掉
498.participate in (=take part in) 参加
499.(be) particular about 讲究，挑剔 (吃，穿)
500.in particular (=especially) 特别是，尤其
501.(a) passion for 对……的热爱，热情
502.be patient with 对……耐心
503.pay for 赔偿，付款，报偿，处罚
504.pay……for 付……的钱
505.(be) at peace with 与……和睦相处
in peace (=peacefully) 安静，平安
506.peculiar to... 特有的，独具的
507.penalty for 对……的处罚，罚金
508.perform on the piano (=play the piano) 演奏钢琴
509.persist in 坚持，固执
510.in person 亲自，当面
511.in place (in right or proper place) 放在应放的地方
512.in place of (=instead of ) 代替
513.take (a) pleasure in 喜欢做某事
514.be on the point of doing sth. (=be about to do sth.) 刚要去做
515.beside the point 不切正题，无关紧要
516.come to the point 谈主要问题
517.there is no point in doing sth. 没必要做某事
518.to the point 中肯，切题
519.point at (=indicate，direct attention) 指着
point out (=indicate，show) 指出，指明
520.popular with/among 大众所喜爱的，拥戴
521.in the position of 处在……位置上
522.in practice 实际上 (状语);业务熟练 (表语)
523.be (get) out of practice 荒疏，不熟练
524.bring (put)...into practice使……成为现实
525.prefer...to... (choose rather, like better) 宁要，更喜欢
526.prepare for breakfast 准备吃早饭
prepare breakfast 作早饭
527.in the presence of 在……在场的情况下
528.for the present (=for the time being，for now) 暂且，就现在来说;at present现在，此刻
529.preside over/at 主持 (会议，业务等)
530.prevail over 占优势，压倒，战胜
531.prevent...from 使……不，防止……做
532.previous to (=prior to) 在……之前
533.take pride in (=pride oneself on) 以……自豪
534.pride oneself on/upon 以……自豪
535.in principle (=only in regard to the main idea) 原则上
536.prior to (=before) 在……之前
537.in private (=privately) 私下，秘密地
in public 公开地
538.proceed from (=arise from，result from) 由……发出，由……引起 (产生)
539.proceed with (=begin and continue sth.) 继续进行
540.in progress (=in the state of be done) 进行中
541.prohibit...from (=forbid) 禁止，阻止
542.in proportion to与……成比例
543.protect……from 阻止……不受，保护不受
544.be proud of 为……自豪
545.provide for为……做准备
546.in public 公开地，当众
547.on purpose (=by intention，deliberately) 故意
548.to the purpose (=useful for one’s purpose) 得要领的，中肯的
549.be qualified in在某种科目或学科上合格
be qualified for在某种职业上合格
550.call……in question 对……表不怀疑
551.beyond (all) question (=without question) 毫无疑问
552.out of the question (=impossible) 不可能的
553.in question (=under discussion) 所谈及的
554.without question 毫无疑问
555.be caught in the rain 被雨淋了
556.at random (=without aim or purpose) 随便地，任意地，胡乱地
557.range over (=cove，include) 范围包括
558.range between 范围在……与……之间不等
559.at any rate (=at all events) 无论如何，总之
560.beyond the reach of 无法达到 (得到，理解)
561.out of reach of 无法够到within reach of (or within one’s reach) 够得到，能拿到
562.react to 对……作出反应
563.react on /upon 对……产生影响
564.react against 作出反抗或反对反应
565.(be) ready for准备好做……
566.in reality (=in fact，really) 事实上
567.beyond all reason 没有道理的
568.by reason of (=because of) 由于，因为
569.it stands to reason that... 理所当然
570.reason with (=argue) 劝说
571.in the red 亏损，负债，赤字
(be) get out of red 不再亏损
572.refer to...as 把……称做……
573.refer...to... (=send，take) 送交，呈交
574.with/in reference to (=concerning, about) 关于
575.with/in regard to (=concerning) 有关，关于
576.give one’s regards to sb. 向……问候
577.regardless of (=without worrying about, despite, in spite of) 不顾，不考虑
578.in/with relation to 关于，有关
579.relevant to 与……有关的
580.to one’s relief 令……感到放心的是
581.relieve...of... 解除，解脱;帮助拿，辞退
582.rely on 依靠，依赖
583.remark on (upon) 对……发表评论
584.remedy for 对……治疗法，补救，药物
585.remind sb. of 提醒某人……使某人向想起
586.in good repair (=in good condition) 处于良好状态;be under repair 在修理中
587.reply to 答复，回答
588.beyond reproach 不受责备的;beyond (all) reason 毫无道理;beyond question毫无疑问;beyond belief以相信;beyond hope 绝望
589.resort to 诉诸于……求助于……
resort to force 诉诸于武力
590.in/with respect to (=concerning) 有关，关于
591.respond to 对……反应，响应，对(药)有效
592.in response to (=as an answer to) 回答，反应
593.be response for 对……负责，是造成……原因
594.rest on/upon (=be supported by) 依靠，寄托
595.rest with (=be in hand of) 在……手中，是……的责任;由……决定;依靠
596.restrain...from (=hold back from) 抑制……不……
597.restrict...to (=keep within limits) 把……限制于……
598.result in (=cause) 导致
599.with the result that其结果是
600.in return (for) 作为报答;以报答 (for)