1.这样的好机会千载难逢。OnCeinabluemoon
AnOPPortUnityasgoodasthisarises/OCCUrSOnlyonCeinabluemoon.
2.这个孩子因为私自拿了母亲包里的钱而觉得十分内疚。guiltyof
Theboyfeltguiltyfortakingmoneyfromhismother'shandbagWithOUtPermiSSion.
3.她知道他的话一句真的也没有。giveCredenceto
ShedidnotgiveCredencetoaSinglewordofhisstory.
4.一般来说，老师对学生的错误都比较宽容。betolerantof
GenerallySPeaking,teachersaretolerantoftheirStUdents'mistakes.
5.我想当然地以为你会跟我们一起来，于是就给你买了票。take.forgranted
Itookitforgrantedyou'dWanttocomeWithus,soIboughtyouaticket.
6.由于经理的不断劝导，工作人员很快就改掉了迟到的坏习惯。breakthehabit
ThankStothemanager'srepeatedCoUnseling,theStaffSoonbrokethebadhabitofCominglatetowork.
7.她现在对她发火，但不久会原谅她的。这只是几小时的事，仅此而已。amatterof,that'sallHe'sfuriousWithhernow,buthe'llforgivehersoon.It'sjust/Onlyamatterofafewhours,that'sall.
Unit5
1.如果你不付全部现金，可以用分期付款的方式来买车。onCredit
IfyouCan'taffordtoPayincash,youCanbuytheCarOncredit.
2.我说过要帮他，而这也正是我要做的。我会恪守诺言的。keepOne'sword
ISaidI'dhelphimandthat'SWhatI'mgoingtodo.Ishallkeepmyword.
4.随着工业生产的发展，旧的封建制度开始崩溃。fallapart
WiththedevelopmentofindustrialPrOdUCtion,theoldfeudalSyStembegantofallapart.
5.他很能干，把农场搞得井井有条。keepSOmethingStraight
HeisVeryCOmPetentandkeepseverythingStraightOnthefarm.
6.新的教育体制旨在把学习更多课程的主动权交给学生。givesomebodytheinitiative
TheneweducationalSyStemaimstogivetheStUdentstheinitiativetolearnmoresubjects.
7.在旅行出发之前先要把我们的车子调整好。tuneUP
BeforeStartingOnOUrtripWeshouldtunetheCarup.
Unit6
1.女房东告诉我租金必须先付。inadvance
TheIandladytoldmethattherentmustbePaidinadvance.
2.虽然这家公司鼓吹他们的产品要比其他公司的好，但实际上他们的质量不如人家。
SUPerior,inferior
AlthoughthiscompanyboaststhatitsPrOdUCtSareSUPeriOrtothoseofothercompanies,theyareactuallyinferiorinquality.
3.最根本的问题是他们缺少兴趣。attherootof
Whatliesattherootoftheproblemistheirlackofinterest.
4.警方访问了一些目击者，但无人能说清楚这事故是怎么发生的。comeabout
ThepoliceinterviewedSeVeraIWitnesses,butnoneofthemcouldtellhowtheaccidentCameabout.
5.百货商店的新楼不符合安全条例。Conformto
ThenewbuildingofthedepartmentstoredoesnotconformtotheSafetyregulations.
6.她从集邮中得到了很大的满足。derivefrom
ShederivedgreatSatiSfaCtiOnfromherStamPcollection.
7.五彩的气球和旗帜为这个小城增添了节日气氛。addto
ColorfulballoOnSandflagsaddedtothefestiveatmosphereofthesmalltown.
8.金钱很重要，可是幸福并不总是和财富联系在一起的。associate--With
MoneyisVeryimportant,buthappinessisnotalwaysassociatedWithwealth.
Unit7
1.博物馆里目前有希腊艺术收藏展出。ondisplay
ThereisaGreekartcollectionondisplayatthemuseumatthemoment.
2.他在森林里迷了路，没有食物，只得靠吃野菜、野果求生。bereducedto
Lostintheforestandoutoffood,heWaSreducedtoeatingwildherbsandfruittokeep