Unit+6+Earth+first+Developing+ideas+学案 高中英语外研版（2019）必修第2册

Unit6EarthfirstDevelopingideas学习目标1.掌握本节生词的表达与运用。2.掌握关于环境保护的写作3.通过课堂练习，对课文内容有更深入的了解。知识运用 1.majority词性：____________意思：_____________majoradj.主要的，大的v.主修minorityn.少数;少数民族a/themajorityof=mostof大多数……themajority 大众,大多数人beinthemajority 占多数练习：Withthepricesgoingup,themajorityofpeople__________(find)ithardtoliveontheamountofmoneytheygetnow.2.break词性：____________意思：_____________breakout (疾病、战争、火灾等)爆发;突然发生breakup 打碎;分裂,解体;结束;(关系等)破裂breakinto 破门而入;强行闯入;突然开始(笑、唱)等breakin 破门而入;打断;插话breakthrough 突围;突破breakof 折断;突然中止;断开;中断breakawayfrom脱离练习：Ourcarbroke________onthewayandwhatwasworse,itwasgettingdark.3.amount词性：____________意思：_____________alargeamountof+不可数名词(多接不可数名词)largeamountsof+不可数名词(多接不可数名词)noamountof即使再大(或再多)的……(不)anyamountof无数的,大量的练习：Alargeamountofwater_________(waste)everyday.4.remove词性：____________意思：_____________remove...from...把……从……移开/撤掉；从……移走……removefrom...to...从……搬到……removeone'sdoubt消除某人的疑虑removeone'sclothes脱下某人的衣服removesb.fromone'spost/position撤某人的职；开除某人removesb.fromschool把某人从学校开除；勒令某人退学removethepaintingtoanotherwall把画移到另一面墙上removethedishesfromthetable拿走桌子上的盘子removethemudfromyourshoes除掉你鞋上的泥练习：Threeworkers_________(remove)fromthecompanyforbadbehavioryesterday.5.campaign词性：____________意思：_____________run/conduct/carryoutacampaign开展一场运动launchacampaign发起一场运动acampaigntodosth.为做某事而进行的运动acampaignfor/against争取/反对······的运动ananti-smokingcampaign反对吸烟的运动anadvertisingcampaign广告宣传活动anational/nationwidecampaign全国性的运动练习：Todaythepolicelaunched_________campaigntoreduceroadaccidents.6.urge词性：____________意思：_____________urgencyn.紧急，紧迫urgentadj.紧急的；急切的urgesb.todosth.敦促/力劝某人做某事urgethat...(should)dosth.极力主张……做某事Itisurgedthat...(should)dosth.坚决要求……做某事urge...on为……加油；激励……feel/havetheurgetodosth.感到/有做某事的冲动练习：Ourteacherurgesus_________(study)hardwiththeCollegeEntranceExaminationdrawingnear.7.concerned词性：____________意思：_____________concernv.(使)担忧;涉及;与……有关concerningprep.关于;涉及be/feelconcernedabout/for对……关切的;对……担忧的beconcernedin...牵扯进/参与……beconcernedwith与……有关;涉及as/sofaras...beconcerned就……而言，对……来说练习：Nowadaysmoreandmorepeopleareconcerned_________theirhealth.8.average词性：____________意思：_____________onaverage平均起来，一般来说above/belowaverage高于/低于平均水平uptotheaverage达到平均水平anaverageof平均有……theaverageof...……的平均数anaveragerate/cost/price平均比率/成本/价格anaveragestudent一名普通的学生achildofaverageintelligence智力平常的孩子averagetemperature平均气温theaverageageof...……的平均年龄averageout算出平均数练习：Thecarisrunningat_________averagespeedof50kilometresanhour.阅读探究Readthefoursubheadingsinthepassageanddecideiftheyaretrueorfalse.Subheading1:Papershoppingbagsarebetterthanplasticones.（）Subheading2:Whenyouturnoffadevice,itstopsusingpower.（）Subheading3:Eatinglocalfoodisgoodfortheenvironment.（）Subheading4:It'sbettertotakeashowerthanabath.（）句型梳理1.（教材P68）However,makingapaperbagusesfourtimesasmuchenergyasmakingaplasticbaganduptothreetimestheamountofwater.然而，生产纸袋的耗能为生产塑料袋的四倍，耗水量则多达三倍。句中的fourtimesasmuchenergyas是一种倍数表达法，其结构是:A+谓语+倍数+asmuch/many+n.+asB.倍数词+as+形容词/副词的原级+as...A是B的……倍。倍数词+形容词/副词的比较级+than...A是B的……倍。倍数词+thesize/height/length/width/depth...+of..A的尺寸/高度/长度/宽度/深度是B的……倍。表示“两倍”时,用twice或double,三倍或三倍以上则用“基数词+times”来表达。句式中表示倍数的词也可用分数、百分数、half等其他词。Theyhavethreetimesasmanycowsaswehave.他们拥有三倍于我们的奶牛。AsiaisaboutfourtimesaslargeasEurope.亚洲的大小大约是欧洲的四倍。Thenewbuildingisfourtimeshigherthantheoldone.新楼是旧楼的四倍高。Theshopistwicelargerthanthatone.这个商店是那个的两倍大。Theearthis49timesthesizeofthemoon.地球是月球的49倍大。Myhouseistwicethesizeofmyparents'.我的房子面积是我父母的房子的两倍。写作技巧主题写作——给好友分享旅游经历的邮件据报道，1990年,藏羚羊(Tibetanantelope)的数量大约为100万只，它们的数量一度急剧减少。我们采取了一系列措施对藏羚羊进行保护。假设你是李华，请给你的外国朋友Tom写一封信，介绍保护藏羚羊的措施，内容包括:1.设立自然保护区;2.禁止猎杀;3.提升公众意识。要求：1.词数80左右；2.可适当增加细节，以使行文连贯；3.开头和结尾已给出，不计人总词数。DearTom,_________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________Yours,LiHua写作思路（一审、二定、三明确、四分段）(1)一审：确定写作体裁和主题体裁：应用文主题：保护藏羚羊的措施(2)二定：确定时态和人称（与体裁和主题息息相关）时态：一般过去时(叙述过去的情况)人称：以第三人称为主(3)三明确明确写作要点：说明写信的原因及描述问题→介绍保护藏羚羊的措施→期待回信(4)四分段（与写作要点息息相关）结合写作要点，正文部分适当分段关键词语：incredible,reduce,present,adopt,protect...from....,extinction,establish,reserve,contributeto,hunt,permission,oaccount高分作文DearTom,DoyouthinkitincrediblethatthepopulationoftheTibetanantelopesoncereducedsharplyfromabout1,000,000in1990?Thus,itwastimetoadoptsomemethodstoprotecttheTibetanantelopesfromextinction.Aboveall,establishingseveralreservesactuallycontributedtotheprotectionofwildspecies.What'smore,huntingtheTibetanantelopeswithoutpermissionmustbebanned.Mostimportantly,wetookthepublicintoaccount,whichmeantwetookmeasurestoraisepeople'sawarenesstoprotectTibetanantelopes.Lookingforwardtoyourearlyreply.Yours,LiHua练习：假如你是李华,你的美国朋友Chris给你发来电子邮件，询问你校正在开展的“低碳生活”(low-carbonlifestyle)活动的情况。请就以下几个方面的活动内容用英语写一封邮件回复。1.上学(骑自行车)；2.校内(节电节水)；3.你对该活动的看法。注意：1.词数80左右；2.可适当增加细节，以使行文连贯。3.开头和结尾已为你写好,不计人总词数。DearChris,I'mhappytoreceiveyoure-mailaskingaboutwhatwearedoingtopromotealow-carbonlifestyle.________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________Yours,LiHuaOnepossibleversion:DearChris,I'mhappytoreceiveyoure-mailaskingaboutwhatwearedoingtopromotealow-carbonlifestyle.Nowletmetellyousomethingaboutit.Allofusaredevotedtotheactivity.Wechoosetogotoschoolbybikeratherthanbybusorcartoreducethereleaseofgreenhousegases.Besides,wetakeactiontosaveelectricityandwatersuchasensuringthelightsareswitchedoffandturningoffthetapafterwewashourhands.AsfarasI'mconcerned,theactivityhighlightstheimportanceofenvironmentalprotectionandhelpsmeestablishalow-carbonlifestyle.Bestwishes.Yours,LiHua话题写作佳句背诵1.Letustakeyoudeepintotheocean,discovermysteriouswildlifeandfacethechallengesthatcomeinfrontofyou.让我们带你到海洋深处,发现神秘的野生生物,面对出现在你面前的挑战。2.Thereisnodenyingthatitishumanbeingsthatleadtothedisappearanceofthepooranimals.不能否认的是正是人类才导致了这些可怜的动物的消失。3.Withyourhelp,webelievewecanimprovethelivingenvironmentoftheanimalssoon,thusincreasingtheirnumber.在你的帮助下，我们相信我们很快能够改善动物的生存环境，这样它们的数量就会增加。4.Thenumberofspeciesofplantsandanimalsontheearthisbecomingsmallerandsmaller.地球上动植物种类的数量越来越少。5.Elephantswouldbeindangerofdyingoutifpeoplewereallowedtoshootasmanyastheywished.如果允许人们尽可能多地猎杀，大象将面临灭绝的危险。6.Thereisnodoubtthatth