国际英语2电子教案B2_U4

CoverCONTENTBook2Unit4-Environment-Text(A)-Text(B)Book2Unit4-EnvironmentContent-2TextstudyBackgroundinformationWordsandexpressionsTextLookingatthetextWorkingwithwordsListeningListening1Listening2Listening3Peopleandissues–Text(A)Book2Unit4-EnvironmentContent-3TextstudyBackgroundinformationWordsandexpressionsTextLookingatthetextWorkingwithwordsListening4Listening5ListeningSpeakingPersonalview–Text(B)Book2Unit4-EnvironmentBriefsummaryoftheunitTopicsEnvironmentalpollutionTheeffectsofglobalwarmingEnvironmentallyfriendlymethodsoftransportRecycledgoodsReducingtheproductionofpersonalgarbageWaysofsavingenergyBeingenvironmentallyawareSkillsWritingasummaryInterpretingwarningsignsExplainingaprocessComparingtwotexts,lookingatkeypointsWriting:WritingareportonsafetysignsProject:AnalysingrubbishproducedbystudentsGrammarAdverbialclausesBook2Unit4-EnvironmentWarmingupCarbondioxideisoneofthesimplestandcommonestmoleculesintheuniverse.Ithasonlythreeatoms–onecarbonandtwooxygenatoms.Webreatheoutcarbondioxide.Plantsbreatheincarbondioxideandgiveoffoxygen,whichiswhyweneedplantsandgreenbeltsaroundthecity.Whatkindsofpollutiondoyouknow?Pleaselookoutofthewindowandanswerwhatpollutionthereisoutthereandgiveexamplesofhowitisproduced.DoyouknowwhatCO2is?________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________Book2Unit4-Environment1.Whatkindsofpollutionareshowninthesepictures?airpollutionFocuswaterandenvironmentalpollutionBook2Unit4-EnvironmentFocuswaterpollutionairpollutionBook2Unit4-EnvironmentFocusnoisepollutionwaterandenvironmentalpollutionnoisepollutionBook2Unit4-EnvironmentFocus2.Workwithapartnerandfindmoreexamplesofthesekindsofpollution.Anotherexampleofenvironmentalpollutioniswhenwethrowourrubbishinthestreetoroutofcars.Eventhrowingrubbisharoundintheschoolisenvironmentalpollution.AnotherexampleofnoisepollutioniswhenoneplayshismusictooloudlyorhastheTVonfullvolume.Waterpollutioniswhenanoiltankerbreaksupandlosesitscargo.Airpollutioniswhenalotofpeoplesmokeinoneroom,orwhenonlyonepersonistravellinginacarinsteadoffourpeople.Book2Unit4-EnvironmentFocus3.Whatcanwedotostopthis?Wecanstopthisbynotusingthecarforshortjourneysandwalkingortakingpublictransport.Wecouldputahighertaxonfuelsothatpeoplewouldnottravelaloneintheircarbutsharethecost.Book2Unit4-EnvironmentFocus4.Whatcanyoupersonallydo?Icanstopsmoking.Icanstopthrowingrubbishinthestreets.Icantrytorecyclemyrubbishbyputtingitinthepropercontainers.IcanturndownthevolumeoftheTVormymusicsystem.Book2Unit4-EnvironmentTheUnitedNationsEnvironmentProgramme(UNEP)isaninternationalinstitution(aprogramme,ratherthananagencyoftheUN)thatcoordinatesUnitedNationsenvironmentalactivities,assistingdevelopingcountriesinimplementingenvironmentallysoundpoliciesandpractices.Itsactivitiescoverawiderangeofissuesregardingtheatmosphere,marineandterrestrialecosystems,environmentalgovernanceandgreeneconomy.Ithasplayedasignificantroleindevelopinginternationalenvironmentalconventions,promotingenvironmentalscienceandinformationandillustratingthewaythatcanbeimplementedinconjunctionwithpolicy,workingonthedevelopmentandimplementationofpolicywithnationalgovernments,regionalinstitutionsinconjunctionwithenvironmentalnon-governmentalorganizations(NGOs).UNEPhasalsobeenactiveinfundingandimplementingenvironment-relateddevelopmentprojects.BackgroundinformationWordsandexpressionsTextTextstudy(A)UnitedNationsEnvironmentProgrammeTextA-background-1-1Book2Unit4-EnvironmentBackgroundinformationWordsandexpressionsTextCycloneInmeteorology,acycloneisanareaofclosed,circularfluidmotionrotatinginthesamedirectionastheEarth.Thisisusuallycharacterizedbyinwardspiralingwindsthatrotateanti-clockwiseintheNorthernHemisphereandclockwiseintheSouthernHemisphereoftheEarth.Mostlarge-scalecycloniccirculationsarecenteredonareasoflowatmosphericpressure.Thelargestlow-pressuresystemsarecold-corepolarcyclonesandextratropicalcycloneswhichlieonthesynopticscale.Cyclonescanproducecloudyweatherandbroadareasofrainandevensnow.TextA-background-2Textstudy(A)Book2Unit4-Environmentdesperatelyadv.veryorverymuch极度地，极强烈地environmentn.surroundings环境committeen.agroupofpeoplechosentodoaparticularjob,makedecisions,etc.委员会criticaladj.seriousorworrying危急的，严重的industrialadj.relatingtoindustry工业的climaten.weather气候BackgroundinformationWordsandexpressionsTextTextA-wordsandexpressions-1Textstudy(A)Book2Unit4-EnvironmentBackgroundinformationWordsandexpressionsTextprocessn.development过程，进程graduallyadv.slowly缓慢地，逐渐地increasinglyadv.moreandmore越来越violentadj.involvingalotofforce猛烈的，激烈的hurricanen.violentwind飓风cyclonen.verystrongwindystorm暴风，旋风refugeen.apersontakingrefugefromwar,persecution,etc.难民TextA-W&E-2Textstudy(A)Book2Unit4-EnvironmentBackgroundinformationWordsandexpressionsTextuncontrollableadj.notabletobecontrolled无法控制的chaosn.utterconfusion纷乱，混乱meltv.becomeliquid融化lo