人教版英语选修6第四单元reading1市公开课一等奖省课获奖课件

Unit4

GlobalwarmingReading第1页Pre-reading第2页第3页第4页1.Haveyoueverseenagreenhouse?ismadeofglassusedforgrowingplants,especiallyduringcoldweather.第5页2.Howdoesthegreenhousework?第6页Theairinsidewaswarmbecausetheglasstraps(挡住,吸取)theheatfromthesunandkeepsitfromescaping(逃跑).

Thismakesthegreenhouseheat

up(热量上升)

andsotheplantscangrowthroughout(在…期间)thecoldperiod.第7页4.GreenhouseEffect

GlobalwarmingGreenhousegasestrappedtheheatfromthesun,whichcausesthetemperatureofearthgoesup.第8页THEEARTHISBECOMINGWARMERBUTDOESITMATTER?Reading第9页

1)Howmanyparagraphsdoesthereading

2)Makeadivisionofthetext.Readthepassagequickly(3’)textconsistof?Pleasenumberthem.Fast-Reading第10页Mainideasofeachpart:Part1(1)Introduceadebateovertheissueofglobalwarming.raisingaquestionPart2(2-5)Howglobalwarmingcomesabout.giving

examples,usinggraphs,explanation

第11页Part3(6)Listtwodifferentattitudesamongscientiststowardsglobalwarming.Part3(7)It'suptoreaderstothinkanddecidewhetherpeopleshoulddosomethingaboutglobalwarmingornot.givingexamples,makingcontrastleavingaquestion第12页Aretheriskstoogreat?Socanyoupredictthefutureoftheglobalwarming?第13页

Whowritesthisarticle?SophieArmstrongofEarthCareWhatroseabout

onedegreeFahrenheit?ThetemperatureoftheearthCarefulreadingPart1(1)Introductionofglobalwarming.第14页2.___________________________1.___________________Part2(2-5)How

globalwarmingcomesabout?theburningoffossilfuels

humanactivityCarbon

dioxideMethaneWhataretheGreenhousegases?1.2.3.Water

vapor

第15页Part3(6-7)Whataretheeffectsofglobalwarming?ariseinthesealevelSeverestorms,droughts,famines,thespreadofdiseases,andthedisappearanceofspeciesMakeplantsgrowfastereffects第16页Readandanswerthequestions.1.Whowrotethemagazinearticle?Whatisthenameofthemagazine?2.Whatarethenamesofthethreescientistsmentionedinthearticle?1.SophieArmstrong,EarthCare.2.DrJaniceFoster,CharlesKeeling,GeorgeHambley.第17页3.Whatdothethreescientiststhinkaboutglobalwarming?believesitistheburningofmoreandmorefossilfuelsthatisresultinginabigincreaseincarbondioxide.Dr.JaniceFosterGeorge

HambleyCharles

Keelingthinkstheeffectsofglobalwarmingcouldbeveryserious(严重).thinks

global

warming

willbemildwithfewbadenvironmentalconsequences.第18页ThedifferentideasbetweenDr.JaniceFoster&GeorgeHambleyDr.JaniceFoster

GeorgeHambleyCarbondioxidehascausedtheglobaltemperatureto__________.Anincreaseoffivedegreeswouldbea___________andcouldbe_____________.Morecarbondioxideisa__________thing,whichmakescrops__________moreandwillencourage______________________________.go

upcatastrophevery

seriouspositiveproduceagreaterrangeofanimals第19页4.Whatarethetwographsabout?ThefirstgraphshowsthetemperatureincreaseofonedegreeFahrenheitbetween1860to2023.Thesecondgraphshowsthecarbondioxidecontentintheatmospherefrom1957to1997.第20页fromaround315partspermilliontoaround370partspermillionHugequantitiesofextracarbondioxideFrom1957to19975.Whatisthemaintopicofthearticle?Globalwarming/thewarmingoftheearth.第21页1.Whofoundouttheamountofcarbondioxideintheatmospherefrom1957to1977?A.Dr.JaniceFoster.B.CharlesKeeling.C.GeorgeHambley.D.SophieArmstrong.BChoosethebestanswer.第22页2.WhichofthefollowingisDrJaniceFoster’sopinion?A.Theresultofthetemperatureincreasewillbeserious.B.Theamountofwarmingisnothingserious.C.Weneedn’tworryabouthighlevelsofcarbondioxide.D.Globalwarmingisanaturalphenomenon.A第23页3.WhichofthefollowingisTRUEaccordingtothetext?A.ThetemperatureoftheearthincreasedaboutonedegreeFahrenheitduringthe20thcentury.B.Thecarbondioxidecontentintheairincreasedby70partspermillionfrom1957to1997.C.Allscientistsacceptthedataingraph2exceptCharlesKeeling.D.JaniceFostersaysthatmorecarbondioxidewillmakeplantsgrowfaster.A第24页4.Theauthorprobablyagreesthat________

A.actuallyglobalwarmingisgoodforman.

B.weshoulddonothingabouttheglobalwarming.

C.catastropheswillhappeniftheglobekeepsonwarming.

D.alotremainstobefoundoutabouttheeffectsofglobalwarming.D第25页Trueorfalse?1.Thetemperatureinthelastcenturydidnotseemtoincreasemuch.2.Everyonebelievesthatglobalwarmingiscausedbytheactivitiesofhumans.3.JaniceFosterbelievesthatshecanmeasurethefutureglobalriseintemperature.TTF第26页4.Theriseincarbondioxideiscausingasteadyincreaseinglobalwarming.5.GeorgeHambleybelievesthatglobalwarmingwilldogoodratherthanharmtotheearth.6.Itiscle