2021版高考英语一轮复习 模块5 Unit 2 The environment课堂突破案课件 牛津

Unit2Theenvironment(主题语境:人与自然——环境保护)-2-1.debaten.辩论,讨论vt.争论,思考vi.商讨,辩论[教材原句]Today’sdebatequestionis,‘Theeconomyortheenvironment—mustwechoose?’今天辩论的问题是“经济还是环境——我们必须作出抉择吗?”(P22)语境巧练单句填空①Ourclassheldadebateon/about/overwhetherstudentsshouldtakecellphonestoschool.②Thesuggestionisstillunderdebate.③Wearedebatingwhattodo(do)next.④Hewasdebatingwhethertogoforawalkortovisitafriend.⑤Youcanbelieveinme.Thetruthofthisnewsstoryisbeyonddebate.-3-考点必记(1)debateabout/on/oversth关于……的辩论debatewhethertodosth/debatewhether+从句考虑/讨论是否……(2)haveadebate进行讨论/辩论underdebate在讨论中beyonddebate无可争辩aheateddebate激烈的辩论-4-2.openthefloor自由发言[教材原句]Thenwewillopenthefloorfordiscussion.之后我们将展开自由讨论。(P22)语境巧练完成句子①Let’sopenthefloor(自由发言)fordiscussiononthatproblem.②Ifyouhaveanythingtosayabouttheproblem,youcantakethefloor(发言).③Everybodyshouldbeabletoget/havethefloor(有发言权)duringthemeeting.-5-考点必记(1)takethefloor发言,参加讨论get/havethefloor得到发言权askforthefloor征求发言权(2)openthemind开阔思路openone’sheart把心里的话说出来openone’seyes长见识,开眼界-6-3.倍数+what从句[教材原句]Theworld’spopulationhasgrownbysixtimeswhatitwasin1800.世界人口与1800年相比已增长了六倍。(P22)语境巧练句式转换Itisreportedthatanewplanethasbeendiscoveredrecently,whichisalmostthreetimesasbigastheearth.=whichisalmostthreetimesbiggerthantheearth.=whichisalmostthreetimesthesizeoftheearth.据报道,最近发现了一个新行星,几乎是地球的3倍大。-7-考点必记本句包含一个倍数表示法,即“倍数+what从句”。(1)A+be+倍数+as+形容词原级+as+B.(2)A+be+倍数+形容词比较级+than+B.(3)A+be+倍数+the+名词(size,height,length,width,age,weight,etc.)+of+B.(4)The+名词+of+A+be+倍数+than+that+of+B.-8-4.It+be+名词词组+动词不定式[教材原句]Itisourdutytotrytocutbackonproductionandreducethenumberofthingswemakeandbuy.我们的职责是尽量缩减生产,以及减少产量和采购量。(P22)语境巧练完成句子①Itiswrongthat(是错误的)somepeoplelookdownonblindpeople.②Itisnecessaryforus(我们有必要)tohelpthedisabled.③Itisapitythat(真遗憾)hehasmadesuchamistake.④Itissaidthat(据说)hehasgonetotheUSAforfurtherstudy.-9-⑤Itseems/appearsthat(看来似乎)heissick.⑥Itisveryimportantnottogivechildren(重要的是别给孩子们)toomuchmoney.⑦Itismyduty(我的职责)tocleanthefloor.⑧Ittakeshimhalfanhour(他花半个小时)togotoworkbyundergroundeveryday.⑨Itisnogoodwaitingfor(等待)otherpeopletomakeyourdecisionforyou.⑩Itiseversoniceofyou(你们)togiveussupportthatweneedmost.-10-考点必记(1)It+be+名词词组+动词不定式。(2)It+be+形容词+主语从句。(3)It+be+名词词组+主语从句,这类名词词组有:afact,apity,ashame,anhonour,aquestion等。(4)It+be+过去分词+主语从句,这类过去分词有:announced,believed,expected,hoped,decided,reported,said,shown等。(5)It+不及物动词+主语从句,这类不及物动词有:appear,happen,seem等。(6)It+be+形容词+forsb+动词不定式,这类句型常用形容词easy,difficult,hard,important,possible,wise等做表语,有时候为了强调不定式动作的执行者,常在不定式前加forsb。-11-(7)It+be+形容词+ofsb+动词不定式,这类形容词常是表示心理品质、性格特征的形容词,如:kind,nice,stupid,clever,foolish,polite,impolite,silly,selfish,considerate等。某人和这些形容词可以构成主系表结构。(8)It+be+名词或形容词+动词-ing,这类名词和形容词常常是:good,nogood,nouse,useless,senseless等。(9)It+takes(sb)+时间(金钱)+动词不定式。-12-5.cutbackon减少,削减,缩减[教材原句]Itisourdutytotrytocutbackonproductionandreducethenumberofthingswemakeandbuy.我们的职责是尽量缩减生产,以及减少产量和采购量。(P22)-13-语境巧练用cut的短语填空①Howcanyoucutdowntheriskofcancer?②HealsosuppliedthenorthwhenAmericacutoffenergyaid.③Hehadcutupthemeatbeforehismothercameback.④Don’ttrytocutinwhileothersaretalking.⑤WhenDadlosthisjob,wehadtocutbackonentertainmentexpenses.⑥Inordernottobelate,shecutacrossthefield.⑦Theycutawayallthedeadbranchesfromthetree.-14-考点必记cutacross抄近路通过cutaway切除,剪掉,砍掉cutdown砍倒;削减;删节cutin插嘴;打断cutout删除cutup切碎;(严重地)割伤;打伤,使伤心cutoff中断;切去,割掉;停止写作佳句①Ifwedon’tsellmoregoods,we’llhavetocutbackonproduction.我们若不能增加货物的销售量,就必须降低产量。②Don’tcutinsorudelywhileheisdoingitwell.他干得好好的,你不要冒冒失失地横插一杠子。③Thefloodshavecutoffoursupplies.洪水切断了我们的供应。-15-6.operatevt.&vi.管理,经营;操作,进行;动手术[教材原句]Thepeopleoperatingthesefactoriesaredeeplyconcernedabouttheenvironment.这些工厂的经营者非常关心环境。(P23)语境巧练单句填空①Doyouwanttoletarobotoperateonme?②Untiltheraillinksareinoperation,passengerscanonlytravelthroughthetunnelbycoach.③Theplanbegantobeputintooperation.④Operations(operate)becomemoreprofitableundertheneworganization,ratherthanless.⑤Hedialedtheoperator(operate)andputinacallforRome.-16-考点必记(1)operateonsbfor...因为……给某人动手术(2)operationn.操作;实施;军事行动;手术inoperation工作中;运行;实施put...intooperation实施;使……运转doanoperationonsb为某人动手术(3)cooperationn.合作,协力operatorn.接线员;操作员-17-7.quantityn.数量[教材原句]MsLinsuggestedweshouldcutbackonthequantityofthingsweproduceinordertosavetheenvironment.林女士建议为了保护环境我们应该削减我们所生产的东西的数量。(P23)语境巧练完成句子①Whencondorseatdeadbodiesofotheranimalscontaininglead,theyabsorblargequantitiesof/alargequantityof(大量的)lead.单句填空②Alargequantityofwaterhasbeenpolluted(pollute)bythenearbyfactoriessincethen.③Largequantitiesofwesternfoodsareserved(serve)inthisrestaurantnow.-18-考点必记alargequantityof很多(后跟名词做主语时谓语用单数)largequantitiesof很多(后跟名词做主语时谓语用复数)inquantity(inlarge/vastquantities)大量地写作佳句“Notonlyarethequantitiesofphytoplanktonintheoceanchanging,”shesaid,“butthetypeofphytoplanktonischanging.”(2019·北京卷,阅读理解)她说:“不仅海洋微生物的数量在改变,其种类也在变化。”-19-8.the+名词+介词+which非限制性定语从句[教材原句]However,Idoagreethatweshouldproducemorethingsfrommaterialsthathavebeenrecycled,andlessfromrawmaterials,thesupplyofwhichisgrowingsmallerandsmaller.然而,我非常赞同我们应该利用回收材料制造更多的产品,减少原材料的使用,因为原材料的供应正变得越来越紧张。(P23)-20-语境巧练单句填空①Therearetwobuildings,thelargerofwh