2019-2020年高中英语Unit4GlobalwarmingPartII学案新人教版选修

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1、2019-2020年高中英语Unit4GlobalwarmingPartII学案新人教版选修一、【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.Whataregreenhousegases?Whateffectsdoyout

2、hinkgreenhousegaseshaveontheearth?Step2:SkimmingDividethepassageinto4partsandmatchtheparagraphsandthemainideas.Part1para___topara____DifferentattitudesamongscientiststowardsglobalwarmingPart2para___topara___It’suptoreaderstothinkanddecidewhetherpeopleshoulddosomethingaboutglobalw

3、arming.Part3para___topara____HowglobalwarmingesaboutPart4para___topara____AgeneralintroductiontoglobalwarmingB.Thepassagemainlyintroducesthe_____________ofglobalwarmingandscientists’different__________towardsit.C.Whereisthispassagetakenfrom?A.atravelguideB.amagazineabouttheenviro

4、nmentC.anewspaperaboutpoliticsD.achildren’sbookD.Thewriterofthepassageis__________Step3:CarefulreadingA:Readpart1andanswerthefollowingquestions:1.Whatisthepurposeofthefirstparagraph?______________________________________2.Whatisthegraphfor?______________________________________B:

5、Readpart2andanswerthefollowingquestions:Whatisthemonlyacceptedreasonfortheincreaseintheearth’stemperature?Whatis“greenhouseeffect”?Decidewhetherthesentencesaretrueornot.①Everyonebelievesthatglobalwarmingiscausedbytheactivitiesofhumans.()②JaniceFosterbelievesthatshecanmeasurethefu

6、tureglobalincreaseintemperature.()③Theamountofcarbondioxideintheatmospherefrom1957to1997wasmeasuredaccurately.()④Greenhousegasesareharmfultohumanbeingsandweshouldtryourbesttoridtheworldofthem.()C:Readpart3andanswerthefollowingquestions:1.Whatarethedifferentattitudestowardsglobalw

7、arming?2.AccordingtosomescientistslikeGeorgeHambley,__________A.globalwarningisadisasterB.therewillbethedisappearanceofspeciesasaresultofhighlevelsofglobalwarming.C.Morecarbondioxidewilldoalotofgood.DHeisworriedabouthighlevelsofcarbondioxideStep4.Post-reading1.Whataresomeofthewri

8、tingtechniquesareusedinthepassage?①givin