最新新人教选修6-Unit4-Global-warming-Reading[阅读课件]课件ppt.ppt

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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