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Unit4words1.protectionn.[U]保护，防御protectionn.→protectv.→protectiveadj.•protect...against/from...保护……免受……的伤害Youshouldturntoyourteacherforprotectionifyouareindanger.如果你处于危险中，你应该向你的老师寻求保护。【知识拓展】•undertheprotectionof在……的保护下•give/provideprotection提供保护Heiswearingsunglassestoprotecthiseyesfromthestrongsunlight.他戴着太阳眼镜，以保护他的眼睛免受强光的照射。2.decrease(1)vi.&vt.减少；(使)变小；或变少Carsalesaredecreasing.汽车销量正在减少。Thenumberoftrafficaccidentshasdecreased.交通事故的数量已经减少了。(2)n.减少；减小increasev.&n.增加；增大Therehasbeenadecreaseinthenumberofstudentsthisyear.今年学生人数已经减少。→【知识拓展】decreasev.decreasen．Thiskindofbirdis_________.dyingoutManytraditionalcustoms______________becausetheyareoutofdate.dieaway慢慢消失Hehidbehindthedooruntilthefootsteps_____________.havedieddiedaway3.dieout（动，植物物种）灭绝out拓展diefrom因(受伤、意外事故等外部原因)而死亡dieof因(疾病、饥饿、情感等内部原因)而死亡dieoff相继死去diedown(火焰、风暴等)逐渐变弱；逐渐平息；逐渐暗淡运用用适当的介词或副词填空①Nowmanywildplantsandanimalsareindangerofdying________.②Thefirefightersfoughtagainsttheforestfireanditfinallydied__________.③Thenoiseofthecardied________inthedistance.④Thefamilymembersdied________thewar.⑤Thepoorwoman________hunger.outdownawayfromdiedof4.lossn.损失；遗失；丧失Hesufferedalossof10,000dollarsonthebusiness.那笔生意中，他损失了10,000美元。ataloss困惑，不知所措Foramomentshewasatalosshowtoreplytothequestion.有好一会儿，她不知道该如何回答这个问题。•5．huntvi.&vt.打猎；猎取；搜寻•Winteristhebesttimeforhuntinginmountainousareas.•冬季是山区狩猎的最佳时间。•Hespentthewholedayhuntingdeer.•他一整天都在打鹿。•I'vehuntedeverywhereformywatchbutIcan'tfindit.•我到处找我的手表，就是找不到。•【知识拓展】•hunter猎人•huntingn．狩猎运动•gohunting去打猎huntfor搜索；追寻；寻找Heishuntingforajob.»用所给动词的适当形式填空•You'veatlastcome，dear！I'vebeen________(hunt)foryoueverywhere.Wherehaveyoubeenallthisafternoon?–解析huntfor寻找。•答案hunting6.inpeace和平地；和睦地；安详地(常作状语或补语)Onthewhole,theworldnowis________.inpeace拓展atpeace和平的(常作表语，与atwar相对)atpeacewith与……和平相处①Thevillagerslive______________(和平地)．②Forcenturies,thecountrieshavebeen_________________(与……和平相处)eachother.inpeaceatpeacewith7．indanger(of)在危险中；垂危HedrovesofastthatIreallyfeltmylifewasindanger.他开车开得飞快，我真的觉得有生命危险。【巧学助记】indangerdangerous完成句子她伤得很重，随时有失去生命的危险。Shewasbadlywoundedand______________________atanytime.indangeroflosingherlifeoutofdanger脱离危险adangerto...对……有危险，对……是危险的物人Thedoctorssayheisnowoutofdanger.医生说他现在已脱离危险。AsfarasI’mconcerned，heisadangertosociety.就我而言，他是社会的危险分子。Thebridgeis_______sothecarsonitare_______.A．dangerous；dangerousB．dangerous；indangerC．indanger；dangerousD．indanger；indanger解析：。dangerous表示所修饰词对他人造成危险；indanger表示所修饰词本身处于危险中。B8．respondvi.回答；响应；做出反应典例Hehasn'trespondedtomyletteryet.他还没有回我的信。respondto...对……作出回答respondto…withsth.bydoingsth.以……对……做出反应/回答She_____________myletter__________(以……对……做出回复)aphonecall.respondedtowith9.distantadj.远的；远处的•Theschoolisthreemilesdistantfromthetown.•那个学校离城三英里。•inthedistance在远处Icouldseethelightinthedistance.我能看见远处的灯光。10.reliefn.(痛苦或忧虑的)减轻或解除；减轻痛苦的事物relieffromsth.减轻……Thedruggivessomerelieffrompain.这种药可以减轻一些痛苦。拓展inrelief如释重负；松了口气(much)toone'srelief＝toone'sgreatrelief使某人安心/宽慰的是①________________________(使他父母很欣慰的是),hepassedtheexam.②Whenhissoncamehomeatlast,hewas_________.(松了口气)Muchtohisparents'reliefinrelief11．burstinto突然……起来；闯入……Tomysurprise,Bensuddenlyburstintolaughter.令我惊讶的是，本突然大笑了起来。Thepoliceburstintotheroomandarrestedhim.警察突然闯进房间逮捕了他。拓展burstintolaughter/tears/flames/cheers/song＝burstoutlaughing/crying/burning/cheering/singing突然笑起来/哭起来/燃烧起来/欢呼起来/唱起来①Theyweresomovedthatthey____________________________________________.(哭了起来)．②Thecrowd_____________________________(一片欢呼)．burstintotears/burstoutcryingburstintocheers/burstoutcheering牛刀小试(1)Whenthegirllearntthatherboyfriendwas______intheearthquake,she______.A．injured；burstintearB．killing；burstintotearsC．stillalive；burstintotearsD．missing；burstintolaughter解析：bestillalive还活着；burstintotears突然哭起来。C(2)Oneminutesheburstinto_______andthenextburstout________.A．crying；laughterB．tears；laughingC．tear；laughterD．crying；laughing解析：burstintotears＝burstoutcrying突然哭起来；burstintolaughter＝burstoutlaughing突然笑起来。B12.mercyn．仁慈；宽恕；怜悯askformercy乞求宽恕withoutmercy残忍地，毫无同情心地atthemercyofsb./sth.任由某人/某物摆布或控制showmercytosb.对某人起了怜悯之心e.g.Theyshowedmercytotheirenemies.他们对敌人很仁慈。完成句子他们在海上迷失了方向，任由风和天气的摆布。Theywerelostatsea，_________________windandweather.atthemercyof13.certainadj.意为确定的；某一；一定可表示“某个，某些，某种”，常用作定语，如：forcertainreasons，acertainMr.Brown。品味经典①Forcertain(some)reasons/acertainreason，hedidn’tcome.因某些/某个原因，他没来。②I’mcertainthatacertain/someMr.Smithisaskingforyou.我确定有个史密斯先生在找你。主语+becertain+that...makecertain弄明白，弄清楚，弄确实Ithinkthere’sabusat8butyou’dbettercalltomakecertain.好像8点有一班公共汽车，不过你最好打电话弄清楚。becertaintodosth.……一定会做某事Heiscertaintopasstheexam.＝It’scertainthathe’llpasstheexam.他一定会通过这次考试。Itiscertainthat...…是一定的，…是有把握的Itiscertainthattheywillagreetotheplan.他们肯定会同意这项计划。becertainof/aboutsth.对某事有把握，确信某事牛刀小试It’squite________thatMr.Smithwillbepresentatthemeeting.A．certainB．sureC．certainlyD．surely解析：certain可用it作形式主语，而sure则不可。Itiscertainthat...确信……A14.Itcontainsapowerfuldrugwhichaffectsmosquitoes.它含有一种强效的药物可以防止蚊虫叮咬。containsvt.包含；容纳；容忍品味经典①Howmuchwaterdoyouthinkthisbottlecontains?你认为这个瓶子能盛多少水？②Shewasunabletocontainherexcitement.她无