2020版高考英语一轮总复习 6-4 Unit 4 Global warming课件 新人教版选修6

第一部分回归教材选修6Unit1～Unit5Unit4Globalwarming考点突破02基础自测01随堂演练03基础自测01重温教材稳固基础Ⅰ.单词回顾(一)拓展单词1．consumevt.消费；消耗；耗尽；吃完→n.顾客；消费者2．phenomenonn.现象→pl.现象3．quantityn.量；数量→(形近词)n.质量4．opposevt.反对；反抗；与(某人)较量→adj.反对的；对立的consumerphenomenaqualityopposed5．n.结果；后果；影响→consequentadj.随之发生的；作为结果的→adv.因此；所以6．statevt.陈述；说明→n.说明；说法；表白7．steadyadj.平稳的；持续的；稳固的→adv.平稳地；持续地8．tendvi.趋向；易于；照顾vt.照顾；护理→n.倾向；趋势9．n.生存；存在→existvi.存在consequenceconsequentlystatementsteadilytendencyexistence10．n.污染；弄脏→pollutevt.污染→adj.被污染的11．growv.生长；种植→n.生长12．adj.电的；与电有关的→n.电；电力→electricadj.电的；电动的→n.电子的13．casualadj.随便的；偶然的→adv.随便地pollutionpollutedgrowthelectricalelectricityelectroniccasually14．refreshvt.使恢复；使振作→adj.振奋的；使人耳目一新的15．n.教育工作者；教育家→educatev.教育；培养→n.教育；培养16．n.贡献→contributev.贡献；撰稿refreshededucatoreducationcontribution(二)重点单词1．subscribevi.vt.2．glancevi.n．3．averageadj.4．circumstancen．5．rangen．6．datan．同意；捐赠；订阅签署(文件)；捐助看一下；扫视一瞥平均的环境；情况种类；范围资料；数据7．trendn．8．catastrophen．9．widespreadadj.10．advocatevt.趋势；倾向；走向大灾难；浩劫分布广的；普遍的拥护；提倡；主张【联想】1．动词＋­tion后缀变名词①pollute→污染②contribute→贡献③advocate→拥护④consume→消费⑤evaluate→评价⑥graduate→毕业⑦congratulate→祝贺⑧adapt→适应pollutioncontributionadvocationconsumptionevaluationgraduationcongratulationadaptation2．名词＋­al后缀变形容词①environment→环境的②nature→自然的；天然的③origin→原来的④convention→传统的⑤profession→专业的environmentalnaturaloriginalconventionalprofessional3．名词变复数的不规则变化①phenomenon→现象②medium→媒体③datum→数据④criterion→标准⑤bacterium→细菌phenomenamediadatacriteriabacteriaⅡ.短语回顾1．发生；造成2．上升；增长；升起3．即使4．大体上；基本上5．代表……一方；作为……的代言人6．忍受；容忍7．只要8．而不是9．同意；赞成；订购comeaboutgoupevenifonthewholeonbehalfofputupwithsolongasratherthansubscribeto10．大量的11．导致12．反对……13．继续14．等等quantitiesofresultinbeopposedtokeeponandsoon【联想】1．“动词＋upwith”结构的短语①upwith忍耐；忍受；熬过②upwith与……同步；跟上(强调状态)③upwith跟上(强调动作)④upwith以……结束⑤upwith提出；想出putkeepcatchendcome2．as＋adj.＋as结构①asas到达某个提及的地方，在……范围内，就……而言②asas“多达……”“达到……之多”，与可数名词复数连用③asas“多达……”“达到……之多”，与不可数名词连用④asas“一……就……”，引导时间状语从句farmanymuchsoon⑤asas也；还；除……之外⑥asas和……一样好；实际上；相当于⑦asas只要；和……一样长wellgoodlongⅢ.佳句必背1．Thereisnodoubtthat...毫无疑问……；itis...that...强调句theearthisbecomingwarmerandthathumanactivityhascausedthisglobalwarmingratherthanarandombutnaturalphenomenon.毫无疑问，地球正变得更加暖和，并且全球变暖是人为的，而不是随意的自然现象。Thereisnodoubtthatitisthat2．evenif/though即使；尽管，引导让步状语从句westartreducingtheamountofcarbondioxideandothergreenhousegases,theclimateisgoingtokeeponwarmingfordecadesorcenturies.即使我们开始减少二氧化碳和其他温室气体的含量，在(未来)几十年或几个世纪内，气候仍会持续转暖。3．as/solongas只要，引导条件状语从句ItisOKtoleaveanelectricalapplianceonyouareusingit—ifnot,turnitoff!只要你在使用电器设备，你便可以把它开着，如果不用就把它关掉！Evenif/thoughso/aslongas4．ittakes...todosth.做某事需要……alotofenergythingsfromnewmaterials,so,ifyoucan,buythingsmadefromrecycledmaterials.用新材料来制作物品要花费大量的能源，因此，只要有可能，就买那些用回收材料制成的物品吧。IttakestomakeⅣ.课文回顾Thereisnodoubt__1__theearthisbecomingwarmerbutthereisafiercedebateoverwhetheritishumanactivitythathascausedthisglobalwarming__2__itisjustanaturalphenomenon.ManyscientistslikeDr.JaniceFosterbelievethatpeoplehavecaused__3__increaseintheearth'stemperaturebyburningfossilfuelslikecoal,naturalgasandoiltoproduceenergywhoseby­products__4__(call)“greenhouse”gases,themostimportantone__5__(be)carbondioxide.Thesegasestrapheatfromthesunandthereforewarmtheearth,without__6__theearthwouldbeaboutthirty­threedegreesCelsiuscooler__7__itis.But__8__(increase)amountofextracarbondioxidemeansthatmoreheatenergyistrappedintheatmospherecausingtheglobaltemperaturetogoup.__9__theotherhand,scientistslikeGeorgeHambleybelievethatanywarmingwillbemildwithfewbadenvironmentalconsequencesandmorecarbondioxideis__10__(actual)apositivething.1．2.3.4.5.6.7．8.9.10.thatorthearecalledbeingwhichthanincreasedOnactuallyⅤ.单元语法it用法(Ⅱ)1．Headmittedthatwhencomestorepairingacomputer,hehadlittleknowledgeofit.2．wasn'tuntiltwodaysagothatDadallowedmetodriveonthemotorway.3．wasnotthewordyousaidthatangeredMrZhang,buthowyousaidit.itItIt4．Canyouexplainwhyitisthesungoesdowninthewest?5．Itwasmysisterfoundithardtogetalongwellwiththeothergirlsandrefusedtheinvitation.thatwho/that考点突破02核心考点各个击破核心单词重难突破1．quantityn．量；数量Theproblembeginswhenweaddhugequantitiesofextracarbondioxideintotheatmosphere.当我们在大气中增加了大量额外的二氧化碳时，问题就来了。(1)inquantity(inlargequantities)大量地quantitiesof＋名词＋谓语动词复数许多……aquantityof＋复数名词＋谓语动词复数不可数名词＋谓语动词单数(2)qualityn.质量[练习]单句语法填空①It'scheapertobuygoodsquantity.②Quantitiesofsoil(wash)awayeveryyear.③Alargequantityofairconditioners(sell)sincethesummercame.inarewashedhavebeensold2．tendvi.趋向；易于；照顾；护理Itmeansthatmoreheatenergytendstobetrappedintheatmospherecausingtheglobaltemperaturetogoup.这意味着更多的热量被困在大气层中，从而引起全球温度上升。(1)tendtodosth.倾向于做某事tendtowards/to倾向于；趋于……tendsb./sth.照顾；护理某人/某物(2)Thereisagrowingtendencyforsb.todosth.某人做某事的倾向日益增长[练习]单句语法填空①Janettends(get)veryangryifyoudisagreewithher.②Thenurseskillfully(tend)soldiers'wounds.③Thereisagrowing(tend)forpeopletoworkathomeinsteadofinoffices.togettendedtendency3．opposevt.反对；抵制；阻挠；与……竞争MrTaylorwasnotbittertowardsthosewhohadopposedhim.泰勒先生对那些曾经反对过他的人并未怀恨在心。(1)opposesth./doingsth.反对(做)某事opposesb./sb.'sdoingsth.反对某人/某人做某事(2)opposedadj.反对的；对立的beopposedto反对……；与……对立(to为介词)[点拨]表示反对的其他