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ID:62139673
大小:5.67 MB
页数:44页
时间:2021-04-19
《最新新人教选修6-Unit4-Global-warming-Reading[阅读课件]课件ppt.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、新人教选修6-Unit4-Global-warming-Reading[阅读课件]WordsandexpressionsofUnit41.Comparedtothepastfewyears,what’stheweatherlikethisyear?2.Doyouwanttocheckitout?Herearesomepicturesbasedontheactuallifescenesintheseyearsforyoutoreferto.QuestionsFastReadingGlancequicklyatthemagazinearticleandanswerth
2、equestions.SophieArmstrongwrotethemagazinearticle.Thenameofthemagazineis“Earthcare”.1.Whowrotethemagazinearticle?2.Whatisthenameofthemagazine?Whatisthewritingstyle?A.Expositive(说明文)B.Practical(应用文)C.Argumentative(议论文)D.Narrative(记叙文)★★★CarefulReading1.Readthetextagainandtrytogetthema
3、inideaofthearticle.Matchthepartswiththemainideas:Explainhowglobalwarmingcomesabout.Listtwodifferentattitudesamongscientiststowardsglobalwarming.Introducethetopicofglobalwarming.It’suptoreaderstothinkanddecidewhetherpeopleshoulddosomethingaboutglobalwarmingornot.PartIPart2Part4Part3Que
4、stionsHowhastheglobalwarmingcomeabout?①Humanactivity---burningoffossilfuels.②Greenhouseeffect---greenhousegases---weneedthosegases.Greenhousegases!What’sgreenhousegaseseffect?Greenhousegasestraptheheatofthesunandkeeptheairsurroundingtheearthwarm.Itiscalledthegreenhouseeffect.③Weaddhug
5、equantitiesofextracarbondioxidetotheatmospherebyburningFossilfuels.Thecarbondioxideintheatmospherewentupfromaround315partspermilliontoaround370partspermillionfrom1957to1997(SeeGraph2onPage26)ThetwodifferentviewpointstowardstheeffectsofglobalwarmingbetweenDr.JaniceFosterandGeorgeHamble
6、yDr.JaniceFosterGeorgeHambleyCarbondioxidehascausedtheglobaltemperatureto__________.Anincreaseoffivedegreeswouldbea____________andcouldbe______________.Morecarbondioxideisa__________thing,whichmakescrops_________more_andwillencourage____________________.goupcatastropheveryseriousposit
7、iveproduceagreaterrangeofanimalsOfthetwoideas,whichareyouinfavorof?TheDrJaniceFoster’s.Why?Becausewehavewitnessedalargenumberofdisasterspredictedbysomepeople.Whataretheeffectsanddisastersofglobalwarming?What’sworse,theglaciers(冰川)oftheSouthPolearebeginningtocrack(破裂)TheglaciersofthePo
8、lesar
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