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ID:52141310
大小:10.54 MB
页数:52页
时间:2020-04-01
《英语选修6第4单元Reading.ppt》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、人教课标高二选修6Unit4Unit4GlobalwarmingFromthefollowingpictures,youwillknowwhereallthisenergycomesfrom.windmillsacoalpowerstationanoilrefineryanuclearpowerplantsolarpanelshydro-electricdamSamplelistsThingsthatuseenergySourcesofenergyRenewable/non-renewablelightheatingcoalnon
2、-renewableoilnon-renewabletelevisioncassetteplayervideorecordercomputernaturalgasnon-renewablewind(windpower)renewablesun(solarenergy)renewableuranium(nuclearenergy)non-renewablefridgestovewashingmachinehairdryerwater(hydro-electric)renewableplantwaste(biomassenergy)r
3、enewablehotspringsorgeysers(geothermalenergy)renewablethesea(tidalenergy)renewableRenewableornon-renewable?Renewableornon-renewable?Whatistoldinthepicture?Whatisthegreenhousemadeandusedfor?Agreenhouseismadeofglassandisusedforgrowingplants,especiallyduringcoldweather.H
4、owdoesitwork?Theairinsideiswarmbecausetheglasstrapstheheatfromthesunandkeepsitfromescaping.Thismakesthegreenhouseheatupandsotheplantscangrowthroughoutthecoldperiod.Whatarethe“greenhousegases”?Intheatmospheresurroundingtheearththerearegasescalled“greenhousegases”,inclu
5、dingcarbondioxide,methane(甲烷,沼气)andwatervapor.Whatdoyouthinkgreenhousegasesdo?Theytraptheheatofthesunandkeeptheairsurroundingtheearthwarm.MainideasofeachpartWritingtechniques(Paragraph1)Introduceadebateovertheissueofglobalwarming.RaisingaquestionMainideasofeachpartWri
6、tingtechniques(Paragraphs2---3)Illustratehowglobalwarmingcomesabout.Givingexamples,usinggraphs,explanation.(Paragraphs4---5)Listtwodifferentattitudesamongscientiststowardsglobalwarming.Givingexamples,makingcontrast.(Paragraph6)It’suptoreaderstothinkanddecidewhetherpeo
7、pleshoulddosomethingaboutglobalwarmingornot.Usingaquestion,leavingreaderstothinkovertheissue.Readthetextcarefullyandfillintheblanks.ScientistsOpinionJaniceFoster◆Weneed______likecarbondioxide,methaneandwatervapour,butifweaddhuge___________extracarbondioxidetotheatmosp
8、herebyburningfossilfuels,itwillcausethe________________togoup.gasesquantitiesofglobaltemperatureScientistsOpinionJaniceFoste
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