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PART1ListeningandSpeakingListeningandSpeakingPART2ReadingTextARaindrop,SnowflakeTextBWhatCanYouDoAboutGlobalWarmingTextCTVForecastPlaystheHeroPART3Grammar状语从句(AdverbialClauses)PART4Translation复习（Revision）PART5WritingE-mailsPART6EnjoyYourselfTheDayAfterTomorrowObjectives▲talkaboutweatherinsimpleEnglish.▲usesentencestructuresinthetwotextsandsummarizethemainideaofthepassages.▲useadverbialclausesingivencontexts.▲writeane-mailmessageinsimpleEnglish.ObjectivesAfterstudyingthisunit,thestudentsareexpectedtobeabletoWatercycleMeteorologistsHumanbehavior’seffectonclimatechangeBackgroundknowledgeWatercycleTheearthhasalimitedamountofwater.Thatwaterkeepsgoingaroundandaroundandaroundandaroundand(well,yougettheidea)inwhatwecallthe“WaterCycle”.Thiscycleismadeupofafewmainparts:◇evaporation(andtranspiration)◇condensation◇precipitation◇CollectionBackgroundknowledgeEvaporationiswhenthesunheatsupwaterinriversorlakesortheoceanandturnsitintovapororsteam.Thewatervapororsteamleavestheriver,lakeoroceanandgoesintotheair.Condensation—Watervaporintheairgetscoldandchangesbackintoliquid,formingclouds.Thisiscalledcondensation.Precipitation—occurswhensomuchwaterhascondensedthattheaircannotholditanymore.Thecloudsgetheavyandwaterfallsbacktotheearthintheformofrain,hail,sleetorsnow.Collection—Whenwaterfallsbacktoearthasprecipitation,itmayfallbackintheoceans,lakesorriversoritmayenduponland.Whenitendsuponland,itwilleithersoakintotheearthandbecomepartofthe“groundwater”thatplantsandanimalsusetodrinkoritmayrunoverthesoilandcollectintheoceans,lakesorriverswherethecyclestartsBackgroundknowledgeMeteorologistsAmeteorologistisanindividualwithspecializededucationwhousesscientificprinciplestoexplain,understand,observeorforecasttheearth’satmosphericphenomenaand/orhowtheatmosphereaffectstheearthandlifeontheplanet.BackgroundknowledgeTypesofMeteorologistsBroadcastMeteorologists:Thesefolksarethepeoplewhointerpretandreporttheweatherfortelevision.ResearchMeteorologists:ManyofthesescientistsworkfortheNationalWeatherServiceorothergovernmentagency.NASA,theEnvironmentalProtectionAgency,andthemilitary.TeachersandProfessors:Manypeopleusetheirknowledgeoftheatmosphereandmeteorologytobecomeeducators.ForensicMeteorologists:Thistypeofmeteorologistwillofteninvestigateclaimsforinsurancecompaniesonpastweatherorresearchweatherforacourtoflaw.ConsultingMeteorologists:LargecompaniesnowhiremeteorologistsforconsultationworkBackgroundknowledgeClimateMeteorologists:Thistypeofmeteorologistlooksatlong-termweatherpatternsanddatatohelppredictfutureclimatetrendsandpastclimatedata.ArchiveMeteorologists:Manyweatherscientistswillalsobeinchargeofresearching,verifying,andreportingonstormsofthepast.AndthelistcouldgoonanBackgroundknowledgeHumanbehavior’seffectonclimatechangeClimatechangeandenvironmentaldeclinearelargelytheresultofhumanbehavior.Theseproblemshaveacceleratedinrecentdecadesaswe’veconsumedevermorescarceresources,includingoil,coal,metals,andwater,tocreateevermoreproductstoliveinourhomes,workinourbusiness,andaccumulatethings.Ittookmorethan20yearstobroadlyacceptthatmankindiscausingglobalwarmingwiththeemissionofgreenhousegases.ThedrasticincreaseintheemissionofCO2(carbondioxide)withinthelast30yearscausedbyburningfossilfuelshasbeenidentifiedasthemajorreasonforthechangeoftemperatureintheatmosphere.BackgroundknowledgeMorethan80%oftheworld-wideenergydemandiscurrentlysuppliedbythefossilfuelscoal,oilorgas.Itwillbeimpossibletofindalternativesources,whichcouldreplacefossilfuelsintheshortormediumterm.Theenergydemandissimplytoohigh.Anotherissueisthenon-renewablecharacteristicoffossilfuels:Ittooknaturemillionsofyearstogeneratetheseresources,howeverwewillhaveusedthemupwithinthenextdecades.Alonetheshrinkingsupplywillnotmakeitpossibletocontinueasusualforalongertime.ThemaincauseofglobalwarmingisourtreatmentofNature.Theultimateglobalwarmingsolutionsistobehaveaspartofalargerwhole.It’syourpersonaldecisionwhetheryouwanttobethecauseofglobalwarming.BackgroundknowledgeSuggestionsforteachersWeatherOralPracticeFunctional-sentenceBankCultureTipsListeningandSpeakingSuggestionsforteachersListening:Talkingaboutweatherisacommonindailyconversation.Peoplealsouseittobreaktheicewhentalkingtostrangers.Studentsarefamiliartothiskindoftalk.Buttheirconversationislimitedbytheirvocabulary.Teachermayhelpstudentsbroadentheirvocabularystorageaboutweatherefficiently,becausethefrequencyofwordsusedinweatherreportishigh.Speaking:Firstlyhelpstudentsgetfamiliarwithsomeofthefunctionalsentencesusedintheconversationonweather.Thenleadthemtotalkaboutweather,climateandcircumstances.Helpstudentslearnhowtoshareinformationandhowtochatfreely.ListeningandSpeakingListeningandSpeakingListeningPracticeSectionAShortConversationsSectionBSituationalDialoguesListeningandSpeakingDirections:Youwillhearashortconversationinthissection.Theconversationwillbespokentwice.Listencarefullyanddotheexercises.Task1ListentotheConversation1andanswerthefollowingquestions1.Wheredoestheconversationprobablytakeplace?Itprobablytakesplaceatschool.2.WheredidNataliegolastnight?N