Unit 2 重点单词预习2 学案-高中英语人教版（2019）必修第三册

必修三Unit2单词预习（2）一._____________adj.(增长、下跌)急剧的；锋利的→_____________adv.急剧地sharpenv.（使）锋利写出以下sharp在句子中的意思①Keepthetoolssharp.________________②Asweallknow,aneaglehassharpeyesight.________________③Suddenly,hefeltasharppaininthestomach.________________④Pleasebehereatseveno'clocksharp.________________⑤However,astherewasasharpincreaseinthenumberofcasesaroundtheglobe,people

areall

scared

ofthe

coronavirus

（新冠）storm.________________⑥Thepriceofpetrolhasrisen___________(sharp)sincelastmonth.⑦Thepencildoesn'twritewell;Ishould________(sharp)itbeforeIdrawthegreatfigure.二．_____________vt.代替→______________n.代替[C]替代品/者taketheplaceof=takeone’splace代替replaceAwith/byB用B代替AThefactoryreplacedmostofitsworkerswithrobots._________________________________________________________Ithinkthatthetheatrewillbereplacedbythecinema._________________________________________________________3.Itisstillunderdiscussionwhethertheoldbusstationshould___________(replace)withamodernhotelornot.4.Thereissomethingwrongwithmybike,soIdecidetoreplaceit___________anewone.5.Weneedtofinda_______________(replace)forSue.三．_____________n.手术;企业;运转;操作→_____________动手术;操作;运转→_____________n.操作者，经营者doanoperation做手术Hehadan_____________(operate)onhisheellastweek.翻译：__________________________________________________________________2.Thismachineisveryeasy____________(operate).Anybodycanlearntouseitinafewminutes.

翻译：________________________________________________________3.Thedoctorrecommendedthatthepatientshould_________________(operate)oninaclinicrightnow.

翻译：________________________________________________________4.Thepeople______________(operate)thesefactoriesaredeeplyconcernedabouttheenvironment.翻译：___________________________________________________________四___________vt帮助；援助assistsb.todosth./assistsb.withsth.帮助某人某事→_____________n.助手；售货员→_____________n.援助，帮助withtheassistanceofsb在某人的帮助下1.He______________(assist)theoldmantofillintheformsandmailedthem.2.Withthe____________(assist)ofhisteacher,hegraduallyadaptedtothenewschoollife.3.Theguidemanagedtoassistthetourists________________(find)somewheretolive.4.Heworkedhardandwasappointedasa_____________(assist)manager.5.在社交软件的帮助下，我们可以交到更多有着相同兴趣的朋友。_____________________________________________________________________________五．_________________急救aidn.帮助,v.帮助withtheaidof...在……的帮助下aidsbtodosth./aidsb.withsth.帮助某人某事Withtheaidofourteachers,welearnedhowtogivefirstaid._________________________________________________________________2.Wehaveaidedhim_________(finish)theworkaheadoftime.3.Themanisverykind-hearted,whoalwaysaidsthestudents__________money.六．bitevt.&vi.咬；n.（咬下的）一口；过去式：____________过去分词：____________1.Everyyearinthiscountrymorethan50000children_______________(bite)bydogs.2.Ifasnake___________(bite)you,itmakesamarkoraholeinyourskin.3._________(bite)twice,thepostmanrejectedtodeliverourlettersunlesswechainedourdog.4.Shewasscaredof__________________(bite)bythebigdoglyingatthegate.5.Shetookseveral________________(bite)ofthesandwich.七．tearn.眼泪可数or不可数？_________v.撕碎；撕裂过去式:___________过去分词:______________________含着泪__________________突然大哭1.Shebrokedownandweptwith_________(tear)ofjoy.2.She__________(tear)theletterupandthrewitintotheair.

3.Hesuddenlyburstinto___________(tear).4.Ashelistenedtothemusic,hiseyesfilledwith__________(tear).5.Shelefttheroom___________.她哭着离开了房间。6.Theirstorywillmoveyoutotears._______________________________________________八．________n./vt.伤害；损害→________adj.有害的→________adj.无害的doharmto=beharmfulto对...有害＝Thereisnoharm(forsb.)todosth.(某人)做某事无妨/无害。1.Trytochooseproductsthatdotheleastharm_____theenvironment.2.Stayinguptoooftenwillbe_________(harm)topeople’shealth.3.Thereisnoharm___________(eat)morefish,whichisbeneficialtoourhealth.4.Mostchildrenarefondofsweetsbuttheymaybe_______(harm)totheirteeth.九.Sheimmediatelybecamethefirstwomanevertobehiredasaresidentphysician.当中心词是序数词或被序数词修饰时,常用不定式作后置定语。1.Chinaisthefirstdevelopingcountry_________(send)man-madespaceshipintothespace.

2.Forastudent,studyingisthefirstthing___________(consider)whileappearanceisthesecond.

3.Lincolnwasthefirstpresident_____________(pass)lawstostopslavery.4.Thefirstemployees_______________(hire)bythecompanywerecollegeathletes.十．seesb.doing看到某人正在做sb.beseendoingsth.某人被看见正在做某事seesb.dosth.看见某人做的全过程seesthdone.看见某事被做1.Isawthewaitress________________(cook)inthekitchenatthattime.2.Hiscolleaguessawhim____________(reject)bythebosswhenheaskedforapayrise.3.Isawalady_____________(