英专 综合教程2 第二版 unit 8 Word 教案.docx

英专 综合教程2 第二版 unit 8 Word 教案.docx

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英专综合教程2第二版unit8Word教案

Unit8FocusonGlobalWarming

SectionOnePre-readingActivities2

I.Audiovisualsupplement2

II.Culturalinformation2

SectionTwoGlobalReading3

ITextanalysis3

IIStructuralanalysis3

SectionThreeDetailedReading4

TextI4

SectionFourConsolidationActivities15

I.VocabularyAnalysis15

IIGrammarExercises18

III.Translationexercises20

IVExercisesforintegratedskills21

VOralactivities21

VIWritingPractice23

VIIListeningExercises24

SectionFiveFurtherEnhancement26

I.TextII26

II.MemorableQuotes29

Unit8FocusonGlobalWarming

SectionOnePre-readingActivities

I.Audiovisualsupplement

Watchthevideoandanswerthefollowingquestions.

1.Wherewastheplaceinthevideo?

2.Isitpossiblethatourplanetwillbelikethisinthefuture?

Why?

（插入视频）

AnswerstotheQuestions:

1.Theearth.Butnotthesameearthwherewearelivingnow.Inthevideo,therewererubbishanddusteverywhere.Andthecitymayhavebeenabandoned,becausetherewasnobodyonthestreetbutarobot.

2.It’squitepossible.HumanbeingshavecausedtoomanytroublestotheEarth:

airandwaterpollution,energycrisis,globalwarming,etc.

Script:

Singing:

Closeyoureyesandseeitlisten,Barnaby.Listen,Barnaby!

PutonyourSundayclothes.There’slotsofworldoutthere.Getoutthebrilliantineanddimecigars.We’regonnafindadventureintheeveningair.Girlsinwhiteinaperfumednightwherethelightsarebrightasthestars.PutonyourSundayclothes.We’regonnaridethroughtowninoneofthosenewhorsedrawnopencars.We’llseetheshowsatDelmonico’s.Andwe’llclosethetowninawhirl.Andwewon’tcomehomeuntilwe’vekissedagirl...

II.Culturalinformation

1.Globalwarming

GlobalwarmingistheincreaseintheaveragetemperatureofEarth‘snear-surfaceairandoceanssincethemid-20thcenturyanditsprojectedcontinuation.Mostoftheobservedtemperatureincreasesincethemiddleofthe20thcenturywascausedbyincreasingconcentrationsofgreenhousegases,whichresultsfromhumanactivitysuchasfossilfuelburninganddeforestation.

Anincreaseinglobaltemperaturewillcausesealevelstoriseandwillchangetheamountandpatternofprecipitation,probablyincludingexpansionofsubtropicaldeserts.WarmingisexpectedtobestrongestintheArcticandwouldbeassociatedwithcontinuingretreatofglaciers,permafrostandseaice.Otherlikelyeffectsincludechangesinthefrequencyandintensityofextremeweatherevents,speciesextinctions,andchangesinagriculturalyields.

（插入图片globalwarming）

SectionTwoGlobalReading

ITextanalysis

1.Fromwhichperspectivesdoesthetextaddresstheissueofglobalwarming?

Thetextaddressestheissuefromthreeperspectives—thegeneralpublicconcern,itscausesandconsequences,andpracticalactionstotackletheproblem.

2.What’stheauthor’spurposeofwriting?

Toraisepeople’sconsciousnessofthepotentialdangersofglobalwarming,andtosuggest

someactionstocombatit.

IIStructuralanalysis

1.Dividethetextintopartsbycompletingthetable.

Paragraphs

Mainidea

1-2

Theauthortellsthereasonwhypeoplearenowincreasinglyconcernedaboutglobalwarming.

3-7

Theauthortracesthecausesofglobalwarminganddiscussestheconsequencesofit.

8-11

Theauthorputsforwardsomesuggestionsonwhatistobedone.

2.Figureoutthesub-ideasinthesecondpart.

1）thecausesoftherisingconcentrationofgreenhousegasesintheatmosphere（Paragraphs3and4）

2）theeffectofsuchconcentrationonclimatechange（Paragraphs5and6）

3）thepotentialthreatofglobalwarmingtohumanhealthandsurvival（Paragraph7）

SectionThreeDetailedReading

TextI

FocusonGlobalWarming

JohnWeier

1Twenty-fiveyearsagoifyoumadeatriptothelocallibraryandperusedtheperiodicalsectionforarticlesonglobalwarming,you’dprobablyhavecomeupwithonlyafewabstractsfromhardcoresciencejournalsormaybeablurbinsomeesotericgeopoliticalmagazine.AsanInternetsearchonglobalwarmingnowattests,thesubjecthasbecomeasrootedinourpublicconsciousnessasMadonna2ormicrowavecooking.1

2Perhapsallthisattentionisdeserved.Withthepossibleexceptionofanotherworldwar,giantasteroid,oranincurableplague,globalwarmingmaybethesinglelargestthreattoourplanet.2Fordecadeshumanfactoriesandcarshavespewedbillionsoftonsofgreenhousegasesintotheatmosphere,andtheclimatehasbeguntoshowsomesignsofwarming.Manyseethisasaharbingerofwhatistocome.3Ifwedon’tcurbourgreenhousegasemissions,thenlow-lyingnationscouldbeawashinseawater,rainanddroughtpatternsacrosstheworldcouldchange,hurricanescouldbecomemorefrequent,andElNinoscouldbecomemoreintense.

OurWarmingPlanet

3Whathasworriedmanypeoplenowisthatoverthepast250yearshumanshavebeenartificiallyraisingtheconcentrationofgreenhousegasesintheatmosphere.Ourfactories,powerplants,andcarsburncoalandgasolineandspitoutaseeminglyendlessstreamofcarbondioxide.Weproducemillionsofpoundsofmethanebyallowingourtrashtodecomposeinlandfillsandbybreedinglargeherdsofmethane-belchingcattle.Nitrogen-basedfertilizers,whichweuseonnearlyallourcrops,releaseunnaturalamountsofnitrogenoxideintotheatmosphere.

4Oncethesecarbon-basedgreenhousegasesgetintotheatmosphere,theystaytherefordecadesorlonger.AccordingtotheIntergovernmentalPanelonClimateChange（IPCC）sincetheindustrialrevolution,carbondioxidelevelshaveincreased31percentandmethanelevelshaveincreased151percent.Paleoclimatereadingstakenfromfossilrecordsshowthatthesegases,twoofthemostabundantgreenhousegases,areattheirhighestlevelsinthepast420,000years.ManyscientistsfearthattheincreasedconcentrationsofgreenhousegaseshavepreventedadditionalthermalradiationfromleavingtheEarth.Inessence,thesegasesaretrappingexcessheatintheEarth’satmosphereinmuchthesamewaythatawindshieldtrapssolarenergythatentersacar.4

5Muchoftheavailableclimatedataappeartobackthesefears.5TemperaturedatagatheredfrommanydifferentsourcesallacrosstheglobeshowthatthesurfacetemperatureoftheEarth,whichincludestheloweratmosphereandthesurfaceoftheocean,hasrisendramaticallyoverseveraldecades.Worldwidemeasurementsofsealevelshowariseof0.1to0.2metersoverthelastcentury.That’sanincreaseofroughly1℃every4,000years.Readingsgatheredfromglaciersrevealasteadyrecessionoftheworld’scontinentalglaciers.Takentogether,allofthesedatasuggestthatoverthelastcenturytheplanethasexperiencedthelargestincreaseinsurfacetemperaturein1,000years.

6Notsurprisingly,manyscientistsspeculatethatsuchchangesintheclimatewillprobablyresultinhotterdaysandfewercooldays.6AccordingtotheIPCC,landsurfaceareaswillincreaseintemperatureoverthesummermonthsmuchmorethantheocean.Themid-latitudetohigh-latituderegionsintheNorthernHemisphere—areassuchastheContinentalUnitedStates,Canada,andSiberia—willlikelywarmthemost.Theseregionscouldexceedmeanglobalwarmingbyasmuchas40percent.

7Asfarashumanhealthisconcerned,thosehithardestwillprobablyberesidentsofpoorercountriesthatdonothavethefundstofendagainstchangesinclimate.7Aslightincreaseinheatandraininequatorialregionswouldlikelysparkanincreaseinvector-bornediseasessuchasmalaria.Moreintenserainsandhurricanescouldcausemoreseverefloodingandmoredeathsincoastalregionsandalongriverbeds.Evenamoderateriseinsealevelcouldthreatenthecoastlinesoflow-lyingislandssuchastheMaldives.Allacrosstheglobe,hottersummerscouldleadtomorecasesofheatstrokeanddeathsamongthosewhoarevulnerable,suchasolderpeoplewithheartproblems.Thewarmertemperaturesmayalsoleadtohigherlevelsofnear-surfaceozonefromcarsandfactories,whichwouldlikelycausemoreperilousairqualitydaysandhospitaladmissionsforthosewithrespiratoryproblems.

TakingActions

8Fortunately,wecantakeactionstoslowdownglobalwarming.8Globalwarmingresultsprimarilyfromhumanactivitiesthatreleaseheat-trappinggasesandparticlesintotheair.Themostimportantcausesincludetheburningoffossilfuelssuchascoal,gas,andoil,anddeforestation.Toreducetheemissionofheat-trappinggaseslikecarbondioxide,methane,andnitrousoxides,wecancurbourconsumptionoffossilfuels,usetechnologiesthatreducetheamountofemissionswhereverpossible,andprotecttheforestsintheworld.

9Wecanalsodothingstomitigatetheimpactsofglobalwarmingandadapttothosemostlikelytooccur,9e.g.,throughcarefulplanningandotherstrategiesthatreduceourvulnerabilitytoglobalwarming.

10Butwecan’tstopthere.Wearealsoadvocatingpoliciesthatwillcombatglobalwarmingoverthelongterm,thingslikecleancarsthatrunonalternativefuels,environmentallyresponsiblerenewableenergytechnologies,andstoppingtheclear-cuttingofvaluableforests.

11Clearly,globalwarmingisahugeproblem.Itwilltakeeveryone—governments,industry,communitiesandindividualsworkingtogethertomakearealdifference.Fortunatelyyoucanbepartofthem.

Paragraphs1-2

Questions

1.Whyhavepeopleshownincreasingconcernaboutglobalwarming?

（Paragraph2）

Theanswerliesinthesecondparagraph:

itisaharbingerofwhatistocome—thethreattolow-lyingnations,changeofrainanddroughtpatterns,frequenthurricanesandintenseElNinos.

WordsandExpressions