大學(xué)英語精讀第二冊第五課課件

TheVillainintheAtmosphere

IsaacAsimovTextThereisonegaspresentintheairwebreathethatisessentialtolife.…Unit5TheVillainintheAtmosphereUsefulexpressionsTextinterpretationWordfamilySentencestructureTranslationReadingskillGuidedwritingHomeworkUsefulexpressions破壞友誼香精油皈依伊斯蘭教面紙，化妝紙表面優(yōu)勢沿海城市一小部分PoisonfriendshipEssentialoilConverttoIslamFacialtissueApparentadvantageCoastalcitiesAfractionofUsefulexpressions平穩(wěn)增長內(nèi)陸國家有失尊嚴(yán)/身份流行病處于壓力下社會關(guān)系油箱SteadyincreaseInlandcountry…one’sdignityA…diseaseUnderpressureSocialconnectionsGastanksUsefulexpressions透明皂獨(dú)特風(fēng)味蔓延植物不利因素(火)吞噬房屋從…角度替代能源TransparentsoapsAdistinctflavorAcreepingplantAdversefactorsConsumehousesFromthe…ofAlternativeenergyTextinterpretationWarm-upquestionsHaveyouevernoticedanyweatherchangeswhereyoulive?Doyouhaveanyideaofthegreenhouseeffect?Whatisthecause?Whatistheeffect?Whatisawayout?BackgroundInformation外教社課件TextinterpretationAnswerthequestions

ⅡComprehensiononp.106Whattypeisthetext,generally?A.narrationB.expositionC.descriptionD.argumentation記敘文說明文描述文議論文TextinterpretationWhatisthemainidea/topicofthetext?Itexplainsthegreenhouseeffect.Thetextismainlyinthe

pattern.A.general-specificB.problem-solutionC.cause-effect總分問題-解決因果TextinterpretationTrytopickupthosewordsorsentencesthatserveaslinksbetweenparagraphsorpartsofthetext.2it3what’smore4buthere6eventually7notonly…but8andallbecauseof9itbeginswith10however12thismeans14butwhy15toblame16tomakemattersworse17whateverreplaces18butthis19whatistobedone20first21secondPartdivisionMain

IdeasParasParts

11-728-13419-21CO2doesn’tseemtobebutisavillain.CO2keepsuswarmbutitscontinuedconcentrationisdisastrous.Whatistobedone?314-18WhyistheconcentrationofCO2steadilyrising?TextinterpretationTextinterpretationWhatcanweindividualsdotoreduceandstopthegreenhouseeffect?Youranswers:1.2.3.Textinterpretation

Picturetalk①②③④⑤⑥Textinterpretation

1.Illairslayssoonerthanthesword.

污濁的空氣殺人比刀還要快。2.Exercise,temperance,freshair,andneedfulrestarethebestofallphysicians.

鍛煉、節(jié)制、新鮮空氣和必要的休息是最好的醫(yī)生。3.Fireandwateraregoodservants,butbadmasters.水火是忠仆，造災(zāi)成元兇。TextinterpretationPlantscovertitintotheirowntissue,whichserveasthebasicfoodsupply…Inalllikelihood,itwillcontinuetoriseanddosoatagreaterrate…Wherethereare…,thewaterwilladvancesteadily,forcingpeopleto…Floridawilldisappearbeneaththewaves,aswillmuchoftheBritishIsles…Andallbecauseofcarbondioxide.Itbeginswiththesunlight,towhich…TextinterpretationSunlight,strikingthetopoftheatmosphere……theEarthcoolsbyradiatingheatintospaceintheformofinfraredradiation.…theatmosphereisnotquiteastransparenttoinfraredradiationasitistovisiblelight.Carbondioxideinparticulartendstoblocksuchradiation.Lessheatislost…thanwouldbelostifcarbondioxidewerenotpresentintheatmosphere.Withoutthesmallquantityofthatgaspresent,theEarthwouldbedistinctlycooler…Textinterpretation…thatiswherethevillainycomesin.Eachyearsince,theconcentrationhascreptupwardanditnowstandsat…Itisestimatedthatby2020theconcentrationwillbenearlytwicewhatitisnow.Somethinglike90percentoftheice…Toblamearetwofactors.…newsourcesoffuelthatdonotinvolvetheproductionofcarbondioxide.WordfamilyBadegg,wicked,toxin,inessential,essence,conversion,exchange,substance,release,seeming,self-evident,hidden,latent,possibility,highland,proportion,portion,unsteady,instable,outland,spill,epidemic,fashionable,structural,falldown,stress,gasoline,radiant,ultraviolet,invisible,visibility,extension,distinctive,crawl,calculate,squaremeter,displace,placement,bushes,consumer,nucleus,exterior,lunar,competent,militant,etc.Morewordsonpp109-11SentencestructureFloridawilldisappearbeneaththewaves,aswillmuchoftheBritishIsles,thecrowdedNilevalley,andthelow-lyingareasofChina,India,andRussia.Itisestimatedthatby2020theconcentrationwillbenearlytwicewhatitisnow.Dotheexercisesonpp112-3TranslationIftherichcountriesspentmoremoneyongreenindustries,insteadofonbuildingmilitarymachinesandnuclearweapons,manyoftoday’swidespreadpollutionproblemswouldgraduallydisappear.Theburningofcoalnotonlyconsumestheoxygeninthehousebutalsogivesoutpoisonousgases.Apparently,findingalternativeenergysourcesisessentialtothesteadydevelopmentofoureconomy.Solarcellscanabsorbsunlightandconvertitintoelectricity.TranslationIfthetemperatureontheEarthcontinuestogoupfromyeartoyear,thepolaricecapswillbegintomeltand,inalllikelihood,halfofthebuildingsincoastalcitieswilldisappearbeneathsplashingseawaves.Becausethesecreaturesaresmallandtendtohidebeneathleafyplants,theyarenotalwaysvisibletothenakedeye.Asaresultofexposuretoatomicradiation,hefinallycollapsedatwork.Thereisdistinctevidenceoftheconnectionbetweenheavypressureofworkandsomedisordersofthebody.ReadingSkillLookingforthethesisstatement

Athesisstatementisasinglesentencethatstatesthecentralideaofanessayandconveysthewriter’sattitudeorpurpose.Somewritersincludeathesisstatementinintroduction;othersprefertoomitthisexplicitstatementandjusttogiveageneralsenseofthetopicorthesis.(p.116,Book2)GuidedwritingParagraphWritingAparagraphisasetofsentences,alldealingwiththesamegeneralideaandlinkedtogetherinasmoothsequence.Thesentencesthatsupportandexpandthetopicmayinclude