401.instead of (in place of)代替，而不是……
402.instruct...in (=teach)教，指導(dǎo)，訓(xùn)練某人……
403.insure... for 把……保險(xiǎn)(多少錢);ensure 使安全;assure...(of)使……確信， 保證
404.insure...against 保險(xiǎn)……以防
405.intend...for 打算把……給
406.(be) intent on 專心致志，堅(jiān)決
407.in the interests of 符合……的利益 be interested in 對(duì)……感興趣
408.interfere in 干涉，interfere with 打攪，干擾
409.at intervals 每隔一會(huì)兒，每隔一段距離
410.intervene in 干預(yù)
411.invest in 投資
412.be involved in (=become connected or concerned)卷入，參加
413.by itself (=alone, without help)單獨(dú)地，靠自己
414.in itself 本身;of itself 自發(fā)，自然
415.be jealous of 妒忌
416.jump at (=to be eager to accept)搶著接受，
417.jump on (=scold, tell of)叱責(zé)
418.junior to sb.年紀(jì)較……輕，職位較……低
419.(be) keen on 喜愛(ài)，渴望 420.keep a close watch on (=keep a sharp lookout for)密切注視
421.keep...to oneself (=keep secret)不告訴別人
422.to (the best of) one’s knowledge 據(jù)……所知
423.at large (=at liberty, free)在逃，逍遙法外 at large (= in general) 一般來(lái)說(shuō)，大體上 at large (= at full length; with details) 詳細(xì)地
424.lean against(背)靠著……
425.at least 至少;at most 至多
426.(not) in the least 一點(diǎn)(也不)，絲毫(也不)
427.at one’s leisure 在……有空的時(shí)候
428.lend itself/themselves to 適合于(某用途)
429.at length (=after a long time，at last) 終于 at length (=in detail，thoroughly) 詳細(xì)地
430.go to any length 想一切辦法，盡一切力量
431.be liable to (=be subject to) 易于……的，應(yīng)受(罰)
432.be liable for 對(duì)……應(yīng)負(fù)責(zé)任的
433.lie in 在于
434.in life 一生中 435.for life 終身
436.in the light of (=considering;taking into account) 考慮到，根據(jù)
437.throw light on (=make clear，explain) 使……更為清楚，提供線索，闡明
438.in line with (=in agreement with) 符合，一致
389.improve sth. (make sth. better)把原物改進(jìn)
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，很長(zhǎng)時(shí)間(否定句，疑問(wèn)句中)
441.before long (=soon) 不久，過(guò)了不久以后
442.in the long run (=in the end ) 從長(zhǎng)遠(yuǎn)來(lái)說(shuō)，后;in the short term (從短 期來(lái)說(shuō))
443.(be) at a loss 不知所措
444.major in 主修(某課程)
445.as a matter of fact 實(shí)際上，事實(shí)是
446.by all means (=at all costs) 不惜一切 (=certainly) 當(dāng)然行;by means of 用……;by no means 完全不，決不
447.on memory of 為紀(jì)念……
448.on the mend (=in the process of recovering) 好轉(zhuǎn)，在康復(fù)中
449.mention sth. sb. 向某人提起某事
450.at the mercy of (=in the power of ) 任……擺布，在……支配下
402.instruct...in (=teach)教，指導(dǎo)，訓(xùn)練某人……
403.insure... for 把……保險(xiǎn)(多少錢);ensure 使安全;assure...(of)使……確信， 保證
404.insure...against 保險(xiǎn)……以防
405.intend...for 打算把……給
406.(be) intent on 專心致志，堅(jiān)決
407.in the interests of 符合……的利益 be interested in 對(duì)……感興趣
408.interfere in 干涉，interfere with 打攪，干擾
409.at intervals 每隔一會(huì)兒，每隔一段距離
410.intervene in 干預(yù)
411.invest in 投資
412.be involved in (=become connected or concerned)卷入，參加
413.by itself (=alone, without help)單獨(dú)地，靠自己
414.in itself 本身;of itself 自發(fā)，自然
415.be jealous of 妒忌
416.jump at (=to be eager to accept)搶著接受，
417.jump on (=scold, tell of)叱責(zé)
418.junior to sb.年紀(jì)較……輕，職位較……低
419.(be) keen on 喜愛(ài)，渴望 420.keep a close watch on (=keep a sharp lookout for)密切注視
421.keep...to oneself (=keep secret)不告訴別人
422.to (the best of) one’s knowledge 據(jù)……所知
423.at large (=at liberty, free)在逃，逍遙法外 at large (= in general) 一般來(lái)說(shuō)，大體上 at large (= at full length; with details) 詳細(xì)地
424.lean against(背)靠著……
425.at least 至少;at most 至多
426.(not) in the least 一點(diǎn)(也不)，絲毫(也不)
427.at one’s leisure 在……有空的時(shí)候
428.lend itself/themselves to 適合于(某用途)
429.at length (=after a long time，at last) 終于 at length (=in detail，thoroughly) 詳細(xì)地
430.go to any length 想一切辦法，盡一切力量
431.be liable to (=be subject to) 易于……的，應(yīng)受(罰)
432.be liable for 對(duì)……應(yīng)負(fù)責(zé)任的
433.lie in 在于
434.in life 一生中 435.for life 終身
436.in the light of (=considering;taking into account) 考慮到，根據(jù)
437.throw light on (=make clear，explain) 使……更為清楚，提供線索，闡明
438.in line with (=in agreement with) 符合，一致
389.improve sth. (make sth. better)把原物改進(jìn)
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，很長(zhǎng)時(shí)間(否定句，疑問(wèn)句中)
441.before long (=soon) 不久，過(guò)了不久以后
442.in the long run (=in the end ) 從長(zhǎng)遠(yuǎn)來(lái)說(shuō)，后;in the short term (從短 期來(lái)說(shuō))
443.(be) at a loss 不知所措
444.major in 主修(某課程)
445.as a matter of fact 實(shí)際上，事實(shí)是
446.by all means (=at all costs) 不惜一切 (=certainly) 當(dāng)然行;by means of 用……;by no means 完全不，決不
447.on memory of 為紀(jì)念……
448.on the mend (=in the process of recovering) 好轉(zhuǎn)，在康復(fù)中
449.mention sth. sb. 向某人提起某事
450.at the mercy of (=in the power of ) 任……擺布，在……支配下