人教版高中英语选修六《unit4globalwarming》课件

a7)
ut?
Whatdotheythinkaboutglobalwarming?Doth eyagreewithoneanother?
Therearesomeverydifferentattitudesam ongscientiststowardsthisissue. Somethinktheeffectswillbeterrible,whil eothersbelievethatweshouldnotworryab outit.
Graph2:
4parts
mainidea
Part1(par Shouldwedosomething？
a1)
Part2(para2Theearthisgettingwarmer.
-5)
twodifferentattitudestowardsglo
Part3(para 6)
balwarming
Part4(par Howdoesglobalwarmingcomeabo
ThedifferentideasbetweenDr.JaniceFoster&Geor geHambley
Dr.JaniceFoster
GeorgeHambley
Carbondioxidehascaus Morecarbondioxideisa_
edtheglobaltemperature __p_o_s_it_i_v_e_thing,
Itiscalledthegreenhouseeffect.
TheEarthIsBecomi ngWarmer–
ButDoesItMatter?
FastReading
Glanceatthearticleandanswe rthesequestions.
Whatisthemaintopicofthear ticle?
大部分科学家同意气温的增高是由于温室效应，没 有它地球将比现在凉快。
但是其他科学家反对这个观点，认为全球气温变暖 实际上是一件好事。
在我看来，拯救地球，刻不容缓。我们应该从自身 做起。记住—我们的贡献很重要。小的作为有很大 的影响。
Thereisnodoubtthattheearthisbecomingwarmer.Onthewh oletheglobalwarmingisatendency.Buthowhasthiscomeabo ut?Itishumanactivitythathasresultedinglobalwarmingrath erthantheearthitself. Mostscientistssubscribetotheviewthattheincreaseinthetem peratureisduetothegreenhouseeffect,withoutwhichtheeart hwouldbecoolerthanitis. Ontheotherhand,otherscientistsareopposedtothisview,stat ingthatglobalwarmingisactuallyapositivething. AsfarasI’mconcerned,timeisrunningouttostopglobalwarm ing.Itishightimethatwedidsomethingfromourselves.Reme mber— ourcontributioncounts!Asmallstepmakesabigdifference.
2.Whatarethenamesofthethreescientists mentionedinthearticle?
TheyareDr.JaniceFoster,Charle sKeelingandGeorgeHambley.
Whofoundouttheamountofcarbondioxidein theatmospherefrom1957to1977? A.Dr.JaniceFoster. B.CharlesKeeling. C.GeorgeHambley. D.SophieArmstrong.
to__________.Anincrea whichmakescrops_____
segooffuivpedegreeswouldb _p_ro__d_uacnedwillencourage
eacatastropheandcould ____________________.
be______________.
agreaterrangeofanimal
s
veryserious
Theauthorprobablyagreesthat________ A.actuallyglobalwarmingisgoodforman. B.weshoulddonothingabouttheglobalwar ming. C.catastropheswillhappeniftheglobekeeps onwarming. D.alotremainstobefoundoutabouttheeffec tsofglobalwarming.
Globalwarming/Thewarmingofthee arth.
1.Whowrotethemagazinearticle?Whatisthe nameofthemagazine?
SophieArmstrongwrotethemagazinea rticle.Thenameofthemagazineis“Eart hcare”.
高中英语课件
madeofcanruohanxing
Unit4
Globalwarming
reading
Pre-reading
Whatisthegreenhousemad eandusedfor?
greenhouse
Theyaremadeofglas sandplantscangrow initwhenitiscoldout side.
Howdoesitwork?
Theglasstrapstheheatfromthesun,makingtheairwarm sothatplantscangrowbetter.
Greenhousegases!
What’sgreenhousegaseseffect?
Greenhousegasesperformthesamefunctionast heglassinagreenhouse--Theytraptheheatofthesunandkeeptheairsurrou ndiner.Cropswillproducemor e. ④Encourageagreaterrangeofanimals.
Writing
毫无疑问地球在变暖。总体上来说，全球气温变暖 是一种趋势。但是这是怎样发生的？正是人类的行 为才导致了气温的增高而不是地球本身。
1.Howhastheglobalwarmingcomeabout?
①Humanactivity---
burningoffossilfuels.Hugequantitiesofextracarbondioxid e---from1957to1997--fromaround315partspermilliontoaround370partspermillio n.
②Greenhouseeffect---greenhousegases---
weneedthosegases.
2.Whataretheeffectsofglobalwarming?
①Thesealeveltorise.
② Severestorms,droughts,famines,thespreadofd iseases,anddestructionofspecies.
3.Whatarethetwographsabout? Graph1showsthete Graph1: mperatureincrease ofonedegreeFahre nheitbetween1860 to2000.
Graph2showsthec arbondioxideconte ntintheatmospher efrom1957to1997.