还剩5页未读,继续阅读
文本内容:
2019-2020年高中英语Unit4GlobalwarmingPartII学案新人教版选修6
一、【学习目标】
1.掌握文中重点词汇和重难点句
2.了解全球变暖和气候的关系,树立环保意识
二、【自主预习】Step1:Pre-readingAskthestudentstolookatthepictureinPre-readingandanswerthefollowingquestions:
1.Whatdoyouseeinthepicture
2.Whatisitusedfor
3.WhataregreenhousegasesWhateffectsdoyouthinkgreenhousegaseshaveontheearthStep2:SkimmingDividethepassageinto4partsandmatchtheparagraphsandthemainideas.Part1para___topara____DifferentattitudesamongscientiststowardsglobalwarmingPart2para___topara___It’suptoreaderstothinkanddecidewhetherpeopleshoulddosomethingaboutglobalwarming.Part3para___topara____HowglobalwarmingesaboutPart4para___topara____AgeneralintroductiontoglobalwarmingB.Thepassagemainlyintroducesthe_____________ofglobalwarmingandscientists’different__________towardsit.C.WhereisthispassagetakenfromA.atravelguideB.amagazineabouttheenvironmentC.anewspaperaboutpoliticsD.achildren’sbookD.Thewriterofthepassageis__________Step3:CarefulreadingA:Readpart1andanswerthefollowingquestions:
1.Whatisthepurposeofthefirstparagraph______________________________________
2.Whatisthegraphfor______________________________________B:Readpart2andanswerthefollowingquestions:Whatisthemonlyacceptedreasonfortheincreaseintheearth’stemperatureWhatis“greenhouseeffect”Decidewhetherthesentencesaretrueornot.
①Everyonebelievesthatglobalwarmingiscausedbytheactivitiesofhumans.
②JaniceFosterbelievesthatshecanmeasurethefutureglobalincreaseintemperature.
③Theamountofcarbondioxideintheatmospherefrom1957to1997wasmeasuredaccurately.
④Greenhousegasesareharmfultohumanbeingsandweshouldtryourbesttoridtheworldofthem.C:Readpart3andanswerthefollowingquestions:
1.Whatarethedifferentattitudestowardsglobalwarming
2.AccordingtosomescientistslikeGeorgeHambley__________A.globalwarningisadisasterB.therewillbethedisappearanceofspeciesasaresultofhighlevelsofglobalwarming.C.Morecarbondioxidewilldoalotofgood.DHeisworriedabouthighlevelsofcarbondioxideStep
4.Post-reading
1.Whataresomeofthewritingtechniquesareusedinthepassage1givingexamples
②usinggraphs
③makingcontrast
④listingsomefiguresA.
①③④B.
①②③C.
①②③④D.
②③④
2.Whatisthewriter’sattitudesA.subjectiveB.criticalC.opposedD.objectiveStep
5.SummaryThereisno______thattheearthisbeing__________andthatitis______________thathascausedthisglobalwarmingratherthanarandombutnatural______________.Allscientists________________theviewthattheincreaseintheearth’s_____________isbecauseoftheburningof______________likecoalnaturalgasesandoiltoproduce_________.Howeverthe________towardsthisrisearepletely___________.Somebelievethattheeffectswouldbe__________whileothersthinkthatweshouldnot______________it.三.【基础知识】I.重点词组和短语(仔细阅读课文,你会发现他们的哟!)
1.当被拿来与......作比较________________
2.发生,产生__________________________
3.毫无疑问_______________________________
4.无规律的自然现象_____________________
5.同意这个观点___________________________
6.由于燃烧化石燃料_____________________
7.温室效应_______________________________
8.少量的_______________________________
9.大量的_________________________________
10.趋于________________________________
11.被困/留在......里______________________
12.上升________________________________
13.作出精确的测量________________________
14.导致________________________________
15.由于某种原因而产生___________________
16.对......的态度_____________________
17.海平面_______________________________
18.物种的灭绝_________________________
19.反对_________________________________
20.增多,大量增加______________________
21.即使__________________________________
22.继续做......________________________II.重点句子
1.【教材原句】Itisarapidincreasewhenpardtoothernaturalchanges.【结构归纳】句中whenpardtoothernaturalchanges为_____________句,完整表达为___________________________________________.【操练巩固】1Generallyspeaking_______________accordingtodirectionsthedrughasnosideeffect.take一般说来,如果根据说明书服用,这种药是没有副作用的2Youmustn’ttouchitunless________________________.ask你不许碰它,除非别人叫你做3If_______________________,theexperimentwillbesuccessful.do如果仔细做的话,这个实验会成功的4Heopenedhislipsasif________________________.say他张开嘴,好像要说什么5Englishwordsareeasilyforgottenunless_________________________.repeat英语单词不经常重复是很容易忘记的
2.【教材原句】Itishumanactivitythathascausedthisglobalwarmingratherthanarandombutnaturalphenomenon.1ItwasascientistcalledCharlesKeelingwhomadeaccuratemeasurementsoftheamountofcarbondioxideintheatmospherefrom1957to
1997.2Theyalsoagreethatitistheburningofmoreandmorefossilfuelsthathasresultedinthisincreaseincarbondioxide.【结构归纳】句中斜体部分是_____________________.其基本结构:___________________________一般疑问句结构:___________________________特殊疑问句结构:___________________________直到....才...结构:_________________________【操练巩固】1Hetoldmethatitwasbecausehewaslateforclass_________________.punish他告诉我,是因为他迟到了,他才受惩罚的2Ireallycan’tremember__________________thatIfirstmettheman.it我真的不记得卧室在哪里第一次见到这个人的3________________________thatMr.Smithsawintheparkyesterday(it)Smith先生昨天在公园里见到的是谁啊?4___________________whoplaysfootballwell_____________________crosstheroadit是足球踢得好的Bill帮助哪个盲人过马路的吗?5______________________thatjeansbecamereallypopularinmanycountry.until直到那时牛仔裤才在那个国家流行起来6Itisyoureffortsnotyourintelligence_______________________oursuccess.determine是你的努力不是你的智商决定你的成功7Itwaswhathewouldstudyincollege_______________________whichdisappointedhim.up他在大学里学什么有他父亲决定,这让他很失望
3.【教材原句】1Somebyproductsofthisprocessarecalled“greenhouse”gasesthemostimportantoneofwhichiscarbondioxide.2Itwillencourageagreaterrangeofanimal----allofwhichwillmakelifeforhumanbeingsbetter.【结构归纳】以上各句都包含有一个由________________+of+___________引导的_____________________Which分别指代________________和________________【操练巩固】1Ihavemanyfriends______________________arebusinessmen.some我有很多朋友,有些是做生意的2Thefactoryproduceshalfamillionpairsofshoeseveryyear_____________________________________________.sell这个工厂每年生产50万双鞋子,80%在国外销售3Therearetwobuildings__________________________nearlyahundredfeethight.stand有两栋建筑,较大的那一个有一百英尺高4Thefootballteamhas15members__________________________________.old足球队有15名成员,最大的有25岁
4.【教材原句】Withoutthe“greenhouseeffect”theearthwouldbeaboutthirty-threedegreesCelsiuscoolerthanitis.【结构归纳】本句是__________________________句,是对______________的虚拟常见的暗示词有________________________________________________________________等【操练巩固】1WithoutyourhelpI_____________________________ontime.finish没有你的帮助,我不可能按时按成工作2I________________________________butIdidn’tknowheraddress.write我本会写信给她的,但是当时我不知道她的地址3Ididn’tknowthathewasacheatotherwiseI________________________________.believe我不知道他是个骗子,否则我就不会相信他4Withoutelectricityhumanlife____________________________..different如果没有电,人类生活会很不一样
5.【教材原句】OntheonehandDrFosterthinksthatanytrendinwhichthetemperatureincreasesby5degreeswouldleadtoacatastrophe.【结构归纳】斜体部分是____________+___________________引导的________________从句先行词为___________,inwhich相当于in______________意思是___________________.【操练巩固】1Manypeoplewhohadseenthefilmwereafraidtogototheforestwhentheyrememberedthescenes_______________________________________.(eat)当他们记起人被老虎吃的场景,很多看过这部电影的人都害怕去森林,,2Agoodadvertisementoftenuseswords______________________________.(attach)一个好的广告经常使用那些人们赋予积极意义的词3Thepositionhowever______________________________isnotquiteawell-paidone.apply但是,你在申请的那个职位,薪水并不高4Ericreceivedtrainingintheputerforoneyear______________________________inabigpany.findEric在电脑上接受了一年的培训,那之后他在一个大公司找到了一份工作。