2021学年高中英语Unit5Adelicateworld教学知识细解码教师用书外研版选择性必修第二

Unit5Adelicateworld1．draman．戏剧，戏剧艺术→dramaticadj.巨大的；引人注目的；给人印象深刻的→dramaticallyadv.显著地；戏剧性地2．subsequentadj.随后的；后来的→subsequencen．随后发生的事，后果→subsequentlyadv.后来，随后3．multiplyv．(使)大大增加，(使)倍增→multiplicationn．乘；增加4．explodev．突然增加；爆炸；突然发生→explosionn．爆炸；猛增5．ecologyn．生态；生态学→ecologicaladj.生态的；生态学的6．comparev．比较；对比；比作→comparisonn．比较7．apparentadj.显而易见的；明白的；清楚的→apparentlyadv.据说；看来，似乎8．varyv．(形状等)不同；改变→variousadj.各种各样的→varietyn．多样性；多变性→variationn．差异；变化9．secureadj.稳固的，可靠的→securityn．安全10．greetv．打招呼→greetingn．问候，招呼1．trapn．(捕捉动物的)陷阱，罗网，夹子；圈套；诡计v．使落入险境；使陷入困境①Shehadsetatrapforhimandhehadwalkedstraightintoit.圈套②Theyweretrappedintheburningbuilding.使陷入困境③Iwonderedifitwasananimalcaughtinatrap.陷阱2．explodev．爆炸；爆破；爆裂；勃然(大怒)；大发(雷霆)；突然发生(危险)；突然爆发，迸发(感情)；突然增加①Therewasahugebangasifsomeonehadexplodedarocketoutside.爆炸②SuddenlyCharlesexplodedwithrage.大发雷霆③Thepopulationexplodesto40，000duringthetouristseason.突然增加WordsandPhrases知识要点1multiplyv．(使)大大增加，(使)倍增；乘；(使)繁殖(教材P50)Looseontheisland,theydidwhatrabbitsdobest—theymultipliedrapidlyandbeganeatingthenativevegetationanddiggingholes,whichcausedsoilerosion.在岛上自由自在，它(兔子)们尽其所能——迅速繁殖，开始吃当地的植被并挖洞，造成水土流失。[例1]Thechildrenarealreadylearningtomultiplyanddivide.孩子们已经开始学习乘法和除法了。[例2]Theirproblemshavemultipliedsincelastyear.自去年以来，他们的问题倍增。[造句]在实验室里繁殖这些细菌是可能的。Itispossibletomultiplythesebacteriainthelaboratory.[知识拓展]multipleadj.多种多样的multiplechoice多项选择multiplicityn.多种多样[即学即练]单句语法填空①Thedriverofthecrashedcarreceivedmultiple(multiply)injuries.②Weareallamazedatthemultiplicity(multiply)ofthenature.知识要点2inturn轮流，依次；反过来(教材P50)Thisinturnledtomorecatshuntingthebirds.这反过来又导致更多的猫捕鸟。[例1]Thegirlstookitinturntowipedownthetablesaftermeals.女孩子们饭后轮流擦桌子。[例2]Thestudentsweresummonedinturntobeinterviewed.学生依次被召入进行面试。[造句]反过来，这些也会影响你的工作效率。Thisinturnwillalsohaveanegativeimpactonyourproductivity.[知识拓展]taketurnstodosth./in(doing)sth.轮流做某事It'sone'sturntodosth.轮到某人做某事takeone'sturn依次，轮到某人byturns轮流，依次[即学即练]单句语法填空①It'syourturntorecite(recite)thepassage.②Wetaketurnstomake/inmakingdinner.＝Wemakedinnerbyturns(turn)．[名师点津](1)inturn表示“轮流；反过来”，而inreturn(for)则表示“作为(对……)的回报”。(2)byturns和taketurns中的turn用复数形式。知识要点3decreasev．(使)减少；(使)变小n．减少；降低(教材P51)Butalthoughtheviruscausedtherabbitpopulationtodecreasefrom130，000toaround10，000,italsomeantlessfoodforthecats.尽管病毒导致兔子数量从13万只减少到1万只左右，但也意味着猫的食物减少了。[例1]Thisspeciesofbirdsisdecreasinginnumberseveryyear.这种鸟的数量在逐年减少。[例2]Therehasbeensomedecreaseinmilitaryspendingthisyear.今年的军费开支有所减少。[造句]人们应减少脂肪的摄入量。Peopleshoulddecreasetheamountoffattheyeat.[知识拓展](1)decreaseinsth.(在某方面)降低，减少decreaseto减少到decreaseby减少了(2)onthedecrease在减少(3)increasev．&n.增加，提高[即学即练]单句语法填空①Alocalnewspaperremarksthatcrimeisonthedecrease.②Thetrafficaccidentsinthecitydecreasedby30%lastyear.③ThepopulationofChinahasincreasedtoabout1.4billion.知识要点4trapvt.使困住；诱捕；诱骗；坑害n．圈套；陷阱；诡计；夹子(教材P51)Inthe1980s,trapsanddogswereusedtocatchthecats.上世纪80年代，人们用陷阱和狗来捕猫。[例1]Webecametrappedbytherisingfloodwater.我们被上涨的洪水困住了。[例2]Werealizedtoolatethatwewerecaughtlikeratsinatrap.等我们发觉自己已成瓮中之鳖时已经太晚了。[造句]我不愿让他以为我是在给他设圈套。IwouldhatehimtothinkI'mtryingtotraphim.[知识拓展](1)be/gettrappedin被困在……中trapsb.into(doing)sth.使某人陷入……的圈套；使上当(2)fallintothetrapofdoingsth.掉进……的陷阱fall/walkintoatrap掉进陷阱(3)set/layatrapfor为……设圈套[即学即练]单句语法填空①Theshopkeepertrappedmeintobuying(buy)theirpoorqualitymilk.②Don'tfallintothetrapofinvestingallyourmoneyinoneplace.③Theoldmanwastrappedintheburninghouseatthatmoment.知识要点5(教材P51)Itturnedoutthattheydevelopedanimmunitytothevirus,andtheirnumbersexplodedonceagain.结果他们对病毒产生了免疫力，他们的数量再次激增。(1)turnout结果是；证明是[例1]Cosgrave'sforecastturnedouttobequitewrong.科斯格雷夫的预测最后证明是大错特错。[例2]Sometimesthingsdon'tturnoutthewaywethinkthey'regoingto.有时事情并不像我们认为的那样发展。[造句]结果发现我认识那个中枪的人。ItturnedoutthatIknewthepersonwhogotshot.[知识拓展]turnup出现，到达；开大，提高，增加；找到，发现turnoff扭转(开关、水龙头等)，关掉(煤气、自来水等)turnon(扭转开关)打开(自来水)，开(煤气、灯、电视等)turnin转身进入；交出turnto(向某人)求助；注意；翻到(……页)turndown(扭转形状等)调小(煤气等)，关小，调小(收音机等的声音)；拒绝turnover翻过来，翻转[即学即练]单句语法填空①Thecarwasturnedoverandthedriverseriouslyinjured.②Becalmandsittightandeverythingwillturnoutwell.③Pleaseremembertoturnoffallthelightswhenyouleave.④Sheturneddowneveryofferofhelp.[小片段填空]Thepartywasalmostover,butJanestilldidn'tturnup．Tomwasverydisappointed.Hedidn'tknowwhyJanedidn'tturndownhisinvitationifshedidn'twanttocome.Heturnedoverthebottlesonthetables,andtherestguestsleftthehallinshock.Tomturnedoffallthelightsinthehall,turningthehallintoaworldofdarkness.Noonecouldimaginehowupsethewas!(2)explodev．爆炸，爆发；激增；勃然大怒[例1]Theywereclearingupwhenthesecondbombexploded.他们在清理时第二颗炸弹爆炸了。[例2]Doyoufearthatyou'llburstintotearsorexplodewithangerinfrontofher?你害怕在她面前突然大哭或勃然大怒吗？[造句]旅游季节人数暴涨至4万。Thepopulationexplodesto40，000duringthetouristseason.[知识拓展](1)explodewith因(愤怒)而发作explodeinto爆发出……explodeintolaughter哄堂大笑(2)explosionn.爆炸；爆发；激增explosiveadj.易爆炸的；爆炸性的[即学即练]单句语法填空①Areyouabouttoexplodewithexcitement?②Stresscanbuildupandexplodeintoproblems.③Highlyexplosive(explode)gasisnaturallyfoundincoalmines.知识要点6owev．应该做；对……负有……的义务；欠(债)；感激；归功于(教材P51)...butwehumansoweittotheislandtogiveitahappyending.……但我们人类有义务给这个岛一个幸福的结局。[例1]Thecountryowe