Unit+3+Environmental+Protection+Reading+and+Thinking课件+【知识精讲精研】高中英语人教版（2019）选择性必修第三册

Lookanddiscuss1.What’shappeninginthephoto?2.Whydidithappen?Theiceismelting.Becauseofthegreenhouseeffect.Whatareotherinfluencesofthegreenhosueeffect?theriseofsealeveldyinganimalscoastalcitiessubmergednaturaldisastersextremeweathereconomiclosses1.Whattypeofwritingisthispassage?A.Argumentativewriting（议论文）B.Narrativewriting（记叙文）C.Expositorywriting（说明文）D.Advertisingwriting（广告）2.What’sthepassagemainlyabout?A.Somepolarbearsdiedofstarvation.B.Whatthegreenhouseeffectis.C.Howthepolarbearsfindfood.D.Globalwarminghascausedsomedisastersandwemustpayattentiontoit.C.Earthisgettingwarmerandwarmer.A.Analarmingcaseaboutabearstarvedtodeath.B.Weneedtodosomethingtoreducegreenhousegasemissions.Para.1Para.4Para.3Para.23.Readandmatchthemainideaswitheachparagraph.Para.5D.WhyisEarthgettingwarmerandwarmer?E.Theriseintemperaturehascausednaturaldisasters.Para1:ProblemThe________isgettingwarmerandwarmer.Evidence1:________________________________________Evidence2:______________Evidence2:___________________EarthaoceanandatmosphereicesealevelsclimatechangewarmingmeltingrisingPara2:AnexampleofclimatechangeTimeWhereWhathappenedWhydidithappen2013Norway’sArcticIslandofSvalbard.A

diedofstarvation.Thebearcannothunt

asbefore.polarbearseals”natural”&“man-made”greenhouseeffectDefinitionHeatfromthesunenterstheatmosphereandwarmtheEarth’ssurfaceFunctionKeepingEarth’swarmandhabitableDefinitionPeopleproducehugeamountsofextragreenhousegases.AbigproblemCausingEarth’ssurfacetemperaturetorisequickly.Para3:ThereasonsThegreenhouseeffect

Readthetextagainandcreateadiagramdescribinghowthegreenhouseeffectworks.(P27,Ex.3)D.HeatenterstheatmosphereB.ReflectedsunlightEarth

AtmosphereC.Heatreflectedbacktoearth’surface

A.Heatreleasedbackintospace

A.D.C.A.B.Para4:TheinfluencesoftheriseintemperatureTheriseintemperature

ledtoextremeweather/naturaldisasters

exampleresultextremerainstorms,heatwavesseriousdamage,costinghumanlives,economiclossesPara5:Thesolutionstotheenvironmentalproblems.0102Thegovernments:Individuals:makepoliciesandtakeappropriateactionsandmeasures.reduceour"carbonfootprint”ReadforthinkingWhatistheauthor’spurposeofwritingthistext?Thepurposeistoinformthereadersandinspirethemtodowhatevertheycantodealwiththisproblem.Toreduceour“carbonfootprint”ToeducateeveryonearoundusIn2013,manypeople1.

(shock)byanewsphotoofadeadpolarbearwhichappearedtohavestarvedanddied.Expertsclaimedthatlowsea-icelevels2.

(cause)byclimatechangemeantthebearcouldnothuntsealsasbefore,soithadtotravelgreaterdistance3.

(find)food.Thenwhatiscausingtheincreaseintheglobalaveragesurfacetemperature?scientistsoftenmentionakeyclimateprocesscalledthe“greenhouseeffect”,4.

hastwocommonmeanings:the“natural”greenhousewereshockedcausedtofind课文语法填空whicheffectandthe“man-made”greenhouseeffect.The“man-made”greenhouseeffecthasnowbecome5.

bigproblem.Thereisstrongandcomprehensiveevidence6.

theriseintemperaturehasledtoanincreaseinextremeweatherandnaturaldisasters.Infact,newsreportsare7.

(frequent)broadcastaboutextremerainstormsandheatwaves8.

(cause)deathsandeconomiclosses.Weasindividualscanreduceour“carbonfootprint”by9.

(restrict)theamountofcarbondioxideourlifestylesproduce.Itisourresponsibility10.

(seize)everyopportunitytoeducateeveryoneaboutglobalwarming.athatfrequentlycausingrestrictingtoseize1.Thereislittledoubtthat

Earthisgettingwarmerandwarmer.Thereislittledoubt...几乎没有疑问的是……Thereisnodoubtthat...毫无疑问的是……Thereissomedoubtaboutsth.

对……值得怀疑that引导同位语从句，解释说明doubt的具体内容注意：doubt前有否定意义的词修饰时，其后的同位语从句由that引导；doubt前有肯定意义的词修饰时，其后的同位语从句由whether或if引导。egOntheotherhand,thereislittledoubtthatpeoplewithlowEQsoftenhaveproblemsgettingonwithotherpeople.

Thereisnodoubtthatheishonest.

Thereissomedoubtabouthisability.Ihavesomedoubtwhetherhewillbefitintimefornex