305．in favour of赞成  
306．be in favour with受宠，受偏爱；  
out of favour with失宠，不受宠  
307．in one’s favour (=to one’s advantage)对……有利  
308．(be) favourable to (=advantageous)有利的  
309．fear for (=be afraid for the safety of sb. or sth.)为……担心  
310．for fear of (=in case of; because of anxiety about)以防，由于怕  
311．in fear of (=afraid for the safety of)担心  
312．feed (sb.) on sth. 靠吃……，用……喂养  
313．be fed up with (=be unhappy, tired about sth. dull)厌烦，腻了  
314．feel like (=have a desire for)想要  
315．fill in填写  
316．fill out (=fill in)填写  
317．set the world on fire = set the flames on fire (=do sth. remarkable)有突出成就  
318．play with fire (=take great risks)干冒险事  
319．set sth. on fire (=set fire to sth.)使……着火，放火  
320．at first sight (=when first seen)乍一看，一见  
321．for the first time第一次（作状语）  
322．in the first place首先，第一  
323．fit into刚好放入  
324．fit in with (=suit, fall into agreement)合适，相配，一致  
325．(be) fit for (=right and suitable for)适合  
326．focus on (=concentrate on)集中在……上  
focus sth. on把……集中在……上  
327．be fond of喜欢  
328．(be) in force有效，实施  
329．go into force开始生效  
330．by force靠武力，强行  
331．force...on把……强加给……  
332．in the form of以……形式  
333．be fortunate in幸运，有好运气  
334．free of charge免费  
335．be freed from免受，没有……  

336．in front of在……前面  
in the front of在……前部  
337．furnish...with (=supply)向……提供  
338．in general (=in most cases, usually)通常  
339．catch (or get) a glimpse of瞥见（强调结果）  
take a glance (or look) at看……眼（强调动作）  
340．be good for对……有好处；对……有作用  
be good at擅长于；be good to对……好  
341．in good time (=early)早早地（做完，到达等）  
342．for good (=for ever)永远地，长期地  
343．take...for granted (=assume to be true)把……认为理所当然的  
344．be grateful to sb. for sth.因……感谢某人  
345．on the ground(s) of (=because of) 由于……  
346．fall to the ground（计划，希望等）失败，落空  
347．on one’s guard (against) 谨防，警惕  
(be)on guard站岗  
348．guard against (=defend，keep safe) 警惕,防止guard...against警卫……防止  
349．guess at猜，估计  
350．by guess靠猜  
351．be guilty of犯有……罪或过失  
352．be in the habit of习惯于  
353．break off (a habit)改掉（某种习惯）  
354．break sb. of (a habit)使某人改掉（某习惯）  
355．get (fall) into the habit of养成了……的习惯  
356．come to a halt (=stop) 停止；停住  
357．at hand在手边，眼前（附近）  
358．by hand用手工（做）  
359．hand in glove (with)狼狈为奸，密切合作  
360．in hand 1）在手边2)(=under control)控制住  
361．in the hands of由……掌握，控制，负责  
362．live from hand to mouth勉强度日，现挣现吃  
363．at the head of在……的前头  
364．head for (=move towards)向……方向前进  
365．hear of (=know about)听人说起，听说过  
366．at heart (=in reality)内心里，实际上  
367．in one’s heart (of hearts)内心深处，事实上  
368．by heart (=by memory)熟记，背（诵）  
369．to one’s heart’s content尽情地  
370．with all one’s heart全心全意地，真心实意  
371．hinder...form (=stop...from)阻碍，使……不能做  
372．be (go) on holiday在（去）度假  
373．be (feel) at home (=to be comfortable; not feel worried)感觉合适，无拘束，熟悉  
374．be honest in诚实  
375．in one’s honour (or in honour of)祝贺，纪念  
376．on one’s honour以某人的名誉担保  
377．hope for希望（某事发生），希望有  
378．to one’s horror令某人感到恐惧的是  
379．in a hurry (=hastily)匆忙地  
380．be identical with (=exactly alike)和完全相同  
381．be identified with被视为与……等同  
382．in ignorance of不知道……  
383．be ignorant of (=lacking knowledge）对……不了解，不知道  
384．(an) impact (on)对……的强烈影响  
385．impose...on把……强加给  
386．impress...on给……留下印象  
387．make (leave) an impression on sb. =give sb. an impression给……留下印象  
388．under the impression that有……的印象，认为  

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  
390．improve in (=get better)有改进，好些  
391．improvement in表示原物有改进，好转  
392．include...in把……列在……里面  
393．inclusive of把……包括在内  
394．independent of独立的，不受约束的  
395．indicative of表明，说明  
396．be indifferent to (=not interested in)对……漠不关心，冷淡，不在乎  
397．(be) inferior to (=less good in quality or value)比……差；superior to比……好  
398．inform sb. of sth.通知，告诉  
399．be innocent of无罪的，无辜的  
400．insist on (=order sth. to happen)坚持要  
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