大學(xué)英語泛讀教程2教學(xué)課件

大學(xué)英語泛讀教程2PPT教學(xué)課件-Unit3大學(xué)英語泛讀教程2PPT教學(xué)課件-Unit33CloudsontheHorizonReading:ClimateChange:FacingtheFutureWordstoKnow:Climate;keyword:wayFurtherReading:ExtremeClimates3CloudsontheHorizonReading:U3-p.25BeforeYouStart?Whatistheweatherlikewhereyoulive??Haveyoueverexperiencedanyextremeweatherconditions??Whatisyouridealtypeofclimate?U3-p.25BeforeYouStart?WhatReadingClimateChange:FacingtheFutureDespiteskepticismfromsomequarters,themajorityofcredibleevidencesuggeststhatglobalwarmingisafact.Mostscientistsbelievethatifwedon’tactnowtotackleclimatechange,itwillbetoolatetodosofurtherdowntheline.HerearesomepredictionsbasedondatafromtheUnitedStatesEnvironmentalProtectionAgency(EPA)andotherorganizationsabouthowweathersystemsandtheenvironmentaregoingtochange.Track6U3-p.26ReadingClimateChange:FacingTemperatureTemperaturesareexpectedtoriseworldwideoverthecourseofthiscentury.EPAresearchsuggeststhat,by2100,averageglobaltemperatureswillhaveincreasedbyupto6.5°C.Thisindicatesthatwewillbeexperiencingheatwavesandextremeheatconditionsonamoreregularbasisinthefuture.Track6U3-p.26ATemperatureTrack6U3-p.26AWindandRainThoughclimatologistsarelesscertainaboutthisaspectofclimatechange,precipitationisalsopredictedtoincreaseonaverage,withtropicalregionslikelytoexperiencethelargestriseinrainfall.Likewise,typhoons,hurricanesandpossiblyeventornadoesaresettobecomemorepowerfulandwreakworsedevastation.Track6U3-p.26BWindandRainTrack6U3-p.26BIce,SnowandPermafrostArcticseaicehasbeendecliningatanalarmingrateformanyyearsnowashassnowinmostnortherlyregionsoftheworld.Therearecurrentlynosignsofthesetrendsbeingreversed.Infact,studiessuggestthatsnowcoverintheNorthernHemispherewillhavedecreasedbyasmuchas15%by2100.Alsoofconcernisthethawingofpermafrost–akindofpermanentlyfrozensoilthatconstitutesalmostaquarterofthelandmassnorthoftheequator.Thisisworryingbecausepermafroststoreshugeamountsofcarbon,andasitthawsandeventuallymelts,itcouldreleaseC02andmethane,bothofwhichtrapheat.Thiscouldpotentiallyexacerbateglobalwarming.Track6U3-p.26CIce,SnowandPermafrostTrackSeaLevelsAstudybytheIntergovernmentalPanelonClimateChange(IPCC)hasprojectedariseinsealevelsofupto59centimetersby2100.Otherresearchsuggeststhatthisfigureisaconservativeestimateandthattheaverageglobalsealevelcouldshootupbytwometers.Basedonthisforecast,sealevelswillhavebeenrisingbyanaverageoftwocentimetersperyearbytheendofthecentury.Ifalloftheabovemakesforunsettlingreading,considerthis:Somescientistsbelievethisisjustthetipoftheiceberg.It’stimetoactonclimatechangebeforeitgetstoolate.Track6U3-p.27DSeaLevelsTrack6U3-p.27DU3-p.27DoYouGetIt?AMultipleMatchingRereadthetext.Thefourparagraphs(A-D)inthebodyofthetextrefertopossibleeffectsofclimatechange.Whichparagraphincludes…_____1.anotherwordforrain?_____2.typesofstorms?_____3.typesofgas?_____4.thecenterlineoftheEarth?_____5.onehalfoftheglobe?_____6.hotweather?BBCCACU3-p.27DoYouGetIt?AMultipleReadingComprehensionBasedonthereadingtext,choosethemostappropriateanswertothefollowingquestions.1.WhatisNOTmentionedasapossibleeffectofclimatechange?Detail

a.morerain c.lesssnowandiceb.strongerwinds d.lesscarbon2.Accordingtothepassage,whichofthefollowingphenomenonisnotpredictedtodecreaseduetoclimatechange?Detaila.permafrostb.snowc.raind.ice3.Whatistrueofpermafrost?Detaila.Itconsistsofgas.b.Itisanareaoflandaroundtheequator.c.Itaccountsfor25%oflandintheNorthernHemisphere.d.Itisafrozengoodsstore.U3-p.28dccReadingComprehensionBasedon4.Whatismeantbytheword“exacerbate”?Inferencea.makeworse c.preventb.makebetter d.help5.Whatdoesthewriterimplyinthefirstsentenceofthetext?Inferencea.Globalwarmingisincredible.b.Somepeopledon’tbelieveinglobalwarming.c.Alltheevidenceforglobalwarmingistrue.d.Mostpeoplebelievescienceisfactual.6.Whichstatementisrightabouttheriseofsealevel?Detaila.SomeresearchindicatedthatIPCChadoverestimatedtheriseofsealevelinthefuture.b.SomeresearchindicatedthatIPCChadprovidedreliablepredictionontheriseofsealevel.c.SomeresearchpredictedthattheriseofsealevelisfasterthanIPCCsuggested.d.SomeresearchpredictedthattheriseofsealevelisslowerthanIPCCsuggested.U3-p.28abc4.Whatismeantbytheword“7.Whatissuggestedbytheconclusionofthearticle?Gista.Thingsarenotasbadastheyseem.b.Thingswillgetbetter.c.Thingscouldbeevenworsethantheyseem.d.Icebergsareindanger.U3-p.28c7.WhatissuggestedbythecoU3-p.29MasterYourVocabularyBFindtheWordCompletethesentencewithawordfromtheboxusinganappropriatetenseorform.There’snowaytofixthislaptop,I’mafraid.It’s_______________________damaged.InpartsofAfrica,elephantscan_______________________destructionwhenchargingthroughvillages.Idon’tknowwhyyouareaccusingJuneofspreadinggossip.Youhaveno_______________________forsayingthat.permanentlywreakbasisU3-p.29MasterYourVocabularyBTherewasdisbeliefinmany_______________________ofthemediawhentheathleteannouncedhisretirement.HaitiisthepoorestcountryintheWestern_______________________._______________________povertyisoneofthemostimportanttasksofanysociety.Sybiloftentalksonhercellphonewhiledriving,andIfinditreally_______________________.Theregionsaroundthe_______________________aregenerallyhotallyearround.U3-p.29quartersHemisphereTacklingalarmingequatorTherewasdisbeliefinmany__KeyWord:wayThewordwayisusedtoconveydifferentmeanings.Thefollowingsentencesallincludedifferentusesofthewordway.Chooseawordorphrasefromtheboxtoreplacethewordsandphrasesinitalicsinthesentences.U3-p.29_____1.Wehavealongwaytogointhefighttohaltclimatechange._____2.Tomywayofthinking,climatechangeisanundeniablefact._____3.Environmentalagenciesneedtodowaymoretomakethepublic

awareoftheimportantissues._____4.Everyonewouldbeforcedtorecycle,ifIhadmyway._____5.Thisparticularspeciesofmonkeyliveswayoutinthejungle._____6.TheconferenceonC02emissionsisunderwayaswespeak._____7.Mostnationshavecomealongwayintheirthinkingonglobal

warming._____8.Itisuptolargecorporationstoleadthewayinbehavingresponsibly.gacehbdfKeyWord:wayThewordwayisuPhrasalVerbsThefollowingphrasalverbsarerelatedtoweather.Chooseonetocompletethesentencesusinganappropriate.It’sbeenscorchinghotforweeks,butthankfullyithasstartedto____________________now.Whydon’tyou____________________alittle?You’vebeensomiserablelately.Theweathermansaidacoldfrontwillbe____________________soon.Mycomputerhas____________________again.Thecursorhasstoppedmoving.IhopeMarkbringhisumbrellawithhim.It’s____________________outside.Theresa’sface____________________whensheheardthebadnews.U3-p.30cooldownbrightenuprollinginfrozenuppouringdowncloudedoverPhrasalVerbsThefollowingphrVocabularyHelperWeatherIdiomsThesubjectofweatherisrichinidioms.You’veprobablyheardtheexpressionrainingcatsanddogs,meaningrainingheavily.Howaboutthefollowingidioms?Choosetherightdefinition.1.Ifsomeoneisundertheweather,theyare:a.caughtoutsidewithoutanumbrella.b.feelingunwell.c.unhappyabouttheclimate.d.happyabouttheweather.2.Ifsomeoneisafair-weatherfriend,theyare:a.alwaysloyal. b.friendlyandcheerful.c.afriendonlywhenthingsaregood.d.friendsfromchildhood.U3-p.30bcVocabularyHelperWeatherIdio3.Ifsomethingisabreeze,itis:a.easy. c.interesting. b.difficult. d.fast.4.Ifsomeonesaystheywillbesomewhereordosomethingcomerainorshine,theymean:a.onlyingoodweather. c.dependingontheweather.b.ontime. d.whateverthecircumstances.5.Ifsomeonehastheirheadintheclouds,theyare:a.notpayingattention. b.inbadmood.c.havingtroubleseeingsomething.d.havingaheadache.U3-p.30ada3.Ifsomethingisabreeze,iU3-p.31TranslationCI.TranslatethefollowingsentencesintoChinese.1.Mostscientistsbelievethatifwedon’tactnowtotackleclimatechange,itwillbetoolatetodosofurtherdowntheline.2.Likewise,typhoons,hurricanesandpossiblyeventornadoesaresettobecomemorepowerfulandwreakworsedevastation.3.Arcticseaicehasbeendecliningatanalarmingrateformanyyearsnowashassnowinmostnortherlyregionsoftheworld.4.Permafrostisakindofpermanentlyfrozensoilthatconstitutesalmostaquarterofthelandmassnorthoftheequator.5.Otherresearchsuggeststhatthisfigureisaconservativeestimateandthattheaverageglobalsealevelcouldshootupbytwometers.U3-p.31TranslationCII.TranslatethefollowingsentencesintoEnglish.1.大部分可靠的證據(jù)表明，全球變暖是一個(gè)事實(shí)。2.數(shù)據(jù)表明，未來人類可能會(huì)經(jīng)歷更加頻繁的熱浪和極端炎熱的天氣。3.氣候?qū)W家預(yù)測，熱帶地區(qū)的平均降雨量將會(huì)增加。4.汽油的燃耗和其他溫室氣體的排放都會(huì)加劇全球變暖。5.如果這些預(yù)測都讓人感到心神不寧，那么更糟糕的狀況就是：它們只是冰山一角而已。U3-p.31II.TranslatethefollowingseKeys:EnglishtoChinese:1.大部分科學(xué)家認(rèn)為，如果現(xiàn)在我們不采取應(yīng)對氣候變化的措施，那么將來就晚了。2.同樣，臺(tái)風(fēng)、颶風(fēng)、甚至可能是龍卷風(fēng)都將會(huì)變得更加厲害，從而加深災(zāi)難的嚴(yán)重性。3.北冰洋的冰多年來一直以一種驚人的速度在減少，世界上大部分北部地區(qū)的雪量也同樣如此。4.永凍土是一種長期凍結(jié)的土壤，它構(gòu)成了赤道以北將近四分之一的大陸。5.其他研究表明，這一數(shù)字是個(gè)保守估計(jì)，地球的平均海平面可能會(huì)激增兩米。U3-p.31Keys:EnglishtoChinese:U3-p.3Keys:ChinesetoEnglish:

1.Themajorityofcredibleevidencesuggeststhatglobalwarmingisafact.2.Thestatisticsshowthathumanbeingswillbeexperiencingheatwavesandextremeheatconditionsonamoreregularbasisinthefuture.3.Itispredictedbyclimatologiststhattheaverageprecipitationinthetropicalregionswillrise.4.Theconsumptionofgasolineandothergreenhousegasesemissionwillexacerbateglobalwarming.5.Ifallthosepredictionsareunsettling,theworseisthattheyareonlythetipoftheiceberg.U3-p.31Keys:ChinesetoEnglish: U3-p.U3-p.31ReadingOverviewDWhichofthepotentialproblemsmentionedinthearticleonpages25to26doyoubelievemightaffecthumansthemost?Why?Explaininyourownwordsinacoupleofsentences.______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________U3-p.31ReadingOverviewDWhichThinkingCapEA.Checkyoursentencestomakesureyou’reusingthesingularandpluralformsofverbscorrectly.Mistakesareparticularlycommonwithadverbsofquantity.Example:Q:Whatdoyoulikeabouttheweatherinyourcountry?A:ThereismanythingsthatIenjoyaboutmycountry’sclimate.Thisisincorrectasmanyisacountableadverb,sothepluralareisrequired.U3-p.31ThinkingCapEA.CheckyoursenB.Readeachquestioncarefullyandanswerwithatleasttwosentences.Remember,thereisnosinglerightanswer.Justgiveyourpointofviewandtrytoexplainit.1.Howdoesclimateaffectyourmood?2.Doestheweatherevercausenaturaldisastersordamagewhereyoulive?Howdopeopleconfronttheseproblems?3.Whichmeasuresdoyouthinkwillbemosteffectiveindealingwithglobalwarmingandclimatechange?U3-p.31B.ReadeachquestioncarefullU3-p.32FurtherReadingExtremeClimatesWhilesomeofusareluckyenoughtoliveintemperatepartsoftheglobewheretheclimateiscomfortable,aconsiderableportionoftheworld’spopulationhastobraveseriouslychallengingweatherconditions.Track7U3-p.32FurtherReadingExtremeTrack7Water,WaterEverywhereThereareseveralcontendersforthewettestlocationontheplanet.PartsofIndiaseeover12metersofrainayear.ThetownofCherrapunjiholdstheworldrecordformostrainfallinayear(26.5metersbetween1860and1861).Italsotakestheprizeforthedampestsinglemonth(anincredible9.3metersinJuly1861).Asignoutsidethetownstillfetesitastheworld’srainiesttown.However,overthelastdecadeorso,Cherrapunjihasbeendryingup.Thetownsuffersfromfrequentwatershortages,withlocalshavingtotrekmilestogettheirhandsondrinkingwater.Theproblemiscitedasevidenceofclimatechangebysome.However,othersfeelthatdeforestationistoblame,withstudiesshowingthatairthattravelsoverdenseforestproducessignificantlymoremoisturethanairoverlandthatisstrippedofvegetation.Furthermore,thereisadirectcorrelationbetweendeforestationandCherrapunji’spoorirrigation,astopsoiliswashedawaywhenthereisnoforestcover.Aviciouscircleisthuscreatedastopsoilisessentialforplantgrowth.U3-p.33Track7Water,WaterEverywhereTrack7DryasaBone?Instarkcontrast,theportcityofAricaonthenorth-easterncoastofChileisknownasthedriestplaceonearth.AswithCherrapunji,though,thisdescriptiondoesn’treallytellthewholestory.Measuredintermsofrainfall(aminuscule0.76mmayear),Aricaisworthyofthetitle,butthecityactuallyenjoysthickcloudcoverandhumiditylevelssimilartoequatorialregions.U3-p.33Track7DryasaBone?U3-p.33Track7SomethingintheAirSpeakingofhumidity–takeaguessatwhichcountryishometotheworld’sdampestair.It’sasafebetthatCanadawasn’tonthetipofyourtongue.That’sprobablybecausehumidityisusuallyequatedwithheat.However,theArcticOceanhasrecordedthehighestlevelsofmoistureofanyregiononearth.SogivenitsproximitytotheNorthPole,GriseFiordonCanada’sEllesmereIsland,cantechnicallybecalledthemosthumidpermanentsettlement.It’salsooneofthecoldest.U3-p.33Track7SomethingintheAirU3-U3-p.34Basedonthereadingtext,choosethemostappropriateanswertothefollowingquestions.1.WhatisNOTtrueofCherrapunji?Detail

a.ItisinIndia.b.Itisrichinessentialsoils.c.Ithassufferedenvironmentaldamage.d.Ithasbecomedrierovertheyears.2.InwhatwayisAricasimilartoCherrapunji?Detail

a.Itisrainy.b.Theweatherhaschangedinbothplaces.c.Theybothhavetropicalclimates.d.Bothplaceshavereputationsthatarenotcompletelyaccurate.3.Whatismeantby“thetitle”inthesecondmainparagraph?Detail

a.Arica c.starkcontrastb.northernChile d.world’sdriestcitybddReadingComprehensionAU3-p.34BasedonthereadingteU3-p.344.Allthefollowingarethefactorsofchangingtheworld’srainiesttownCherrapunjiEXCEPT___.Detaila