《Unit 6 Earth first》優(yōu)質(zhì)教學(xué)課件（統(tǒng)編外研版）-高中英語課件

必修二Unit6EarthFirst(3)

高一年級(jí)英語EnvironmentalproblemstobesolvedListeningandSpeakingLearninggoals1.Toselectthetopicsthelecturecoversafterlistening.2.Tonotedownthecauses,effectandcontrolmeasuresinthepastandpresentbylisteningagain.3.Totalkaboutanotherenvironmentalprobleminasimilarconversation.

Activity1:ThinkingandansweringEnvironmentalproblemstobesolvedCanyoulistoutsomeenvironmentalproblemstobesolved?

Didyouknow?

Smogcomesfromthewords“smoke”and“fog”,anditisusedtodescribetheairpollutionincitiescausedmainlybytrafficandfactories.Smogcanbedangerousbecauseitcausesseverebreathingproblemsandinfections.Activity1:Thinkingandanswering1.Wheredoestheword“smog”comefrom?Smogcomesfromthewords“smoke”and“fog”.2.Whatisitusedtodescribe?Itisusedtodescribetheairpollutionincitiescausedmainlybytrafficandfactories.Activity1:Thinkingandanswering3.Whyisitdangerous?Smogcanbedangerousbecauseitcausesseverebreathingproblemsandinfections.WatchavideoLet’swatchavideoandgetsomemoreinformationaboutsmog.WatchthevideoThecomponentsofsmogSmogcontainsfogandhaze.Fogconsistsofalargenumberoftinywaterorice.Theymakethevisibilityworse.Hazeisairpollution.Itismixedupwithdust,smokeandotherdryarticles.Thecomponentthatmakesuphazemayhaveanegativeeffectonpeople’shealth,especiallyfortheoldandchildren.Causesofsmog1.Theheavytrafficcausesairpollution.Theincreasingnumbersofcarsinthecityareasendoffalotofpoisonousgas.2.Factorieskeepemittingdangerousmaterialthatcausessmog.3.

Smogcanoccurmorequicklyandbemoresevereonahot

andsunnyday.Effectsofsmogontheenvironment1.Affecttheecologicalenvironment.Smoggyweatherhasanimportantimpactonroads,railways,aviation,shipping,powersupplysystemandcropgrowth.2.Causegreatharmtohumanhealth.Hinderthenormalbloodcirculation.Causeheartdiseaseandbreath-relatedproblems.EffectsofsmogontheenvironmentIncreasethepossibilityofsufferingfrominfectiousdisease.3.Affecttrafficsafety.Visibilityislow.Trafficcongestionislikelytooccur.Trafficaccidentsoccur.…Measurestotake1.Thegovernmentandauthoritiesshouldenforcelawsandregulationstocontroltheemissionofpollutinggas.2.Plantmoretreestoimprovetheairquality.3.Limitthenumbersofcarsonroad.4.Gotoschoolorworkwithpublictraffic.5.Makepublicspeechestoraisepeople’sawareness.Activity2:ReadingandpredictingReadtheseventopicsandpredictthetopicscoveredinthelecture.P671.Whattheword“smog”means.2.Whentheword“smog”appeared.3.Whatcausedsmoginthepast.Activity2:Readingandpredicting4.Whatcausessmognow.5.Theeffectsofsmogontheenvironment.6.Howgovernmentstrytoreducesmog.7.Whatwillhappenifwedon’treducesmog.Activity2:ListeningandtickingListentothelectureandtickthetopicsthatarecoveredinthelecture.Activity2:CheckinganswersThetopicsthatarecovered.Keys:123461.Whattheword“smog”means.2.Whentheword“smog”appeared.3.Whatcausedsmoginthepast.4.Whatcausessmognow.6.Howgovernmentstrytoreducesmog.Activity2:Focusingonthetopicscovered1.Whattheword“smog”mean.Itisakindofairpollution,withsmokeandfog.2.Whentheword“smog”appeared.Itwasfirstusedinthe1900s.3.Whatcausedsmoginthepast.Itwasacoldwinter,soalotofcoalwasburnedathomeandinthefactories.Theproblemwasthattherewasnowind,sothicksmogcoveredthecity.Activity2:FocusingonthetopicscoveredActivity2:Focusingonthetopicscovered4.Whatcausessmognow.Nowadays,smogstillexists,butisproducedbychemicalscomingfromtrafficandfactories.6.Howgovernmentstrytoreducesmog.Factoriesmustfollowrulesaboutwhatchemicalstheyuse.Insomecities,whenthere’ssmog,peoplehavetopaytodriveinthecitycenter.

Activity3:ReadingandpredictingReadtheslidesinactivity8andpredictthemainidea.Activity3:ListeningandcompletingListentotheaudioandcompletetheslides.Activity3:CheckinganswersSmoginthepastTermcreatedin:1.1900sBigproblemsinLondon:2.TheGreatSmog

inDecember1952Causesoftheproblem:burningtoomuchcoaland3.nowind

Activity3:CheckinganswersSmoginthepresentCausesoftheproblem:4.chemicalscomingfromtrafficandfactoriesMeasures:rulesaboutusing5.chemicalsinfactoriesand

6.requirementsofpayingtodriveinthecitycenterActivity3:AnsweringaquestionQ1.Whatothermeasurescanyouthinkoftoreducesmog?Activity3:AnsweringaquestionQ2.What’stherelationshipbetweenthespeakers?Ateacherandhisstudents.Activity4:ListeningandtakingnotesNowlistentothelectureagainandtakenotesontheexpressionsusedtointerruptthelecturerpolitely.Activity4:ReadingthetapescriptReadthelecturebyfollowingthetapescript.Activity4:ReadingthetapescriptLecturer:Goodevening,everyone,andthankyouforcomingtotoday’stalk.I’mDrBrownandI’mgoingtotalkaboutairpollutionincities—whatweallknowas“smog”.Pleasefeelfreetostopmeifyouhaveanyquestions.So,firstofall,abitofhistory.Theterm“smog”wasfirstusedinthe1800sincitiesthathadproblemswithsmokeandfog.Activity4:ReadingthetapescriptStudentA:Sorryforinterrupting,butIbelieveitwasinthe1900s.Lecturer:Sorry,Imadeamistake.Youareright.Itwasinthe1900s.Thankyou.Londonwasoneofthecitieswheresmogcausedbigproblems.InDecember1952,itsufferedfrom“TheGreatSmog”.Itwasaverycoldwinter,soalotofcoalwasburnedathomeandinthefactories.Theproblemwasthattherewasnowind,sothicksmogcoveredthecity.Nowadays…Activity4:ReadingthetapescriptStudentB:Excuseme,butcanIjustask—didthesmogcauseanydeaths?Lecturer:I’mafraidso.Accordingtoresearch,about4000peopleareknowntohavediedasaresultofthesmog,butthatnumbercouldbemuchhigher.Itwasterrible!Nowadays,smogstillexists,butisproducedbychemicalscomingfromtrafficandfactories.Activity4:ReadingthetapescriptHowever,governmentsaretakingmeasurestoreducesmogasmuchaspossible.Now,let’slookatwhatsmogdoestoourhealth…StudentA:IfIcouldjuststopyouagain…Canyougiveusexamplesofthesemeasures?Lecturer:Well,forexample,factoriesmustfollowrulesaboutwhatchemicalstheyuse.Insomecities,whenthere’ssmog,peoplehavetopaytodriveinthecentre.Now,let’smoveontotheimpactofsmogonourhealth…Activity4:ReadingthetapescriptActivity4:FocusingonexpressionsTheexpressionsusedtointerruptotherspolitely.Sorryforinterrupting,but…Excuseme,butcanIjustask…IfIcouldjuststopyouagain…Activity4:MakingasummaryandretellingMakeasummaryofthelectureandretellthepassage.Activity4:ReadingthesummaryThelecturemainlyfocuseson“smog”.Thetermsmogwascreatedinthe1900s.InDecember1952,Londonsufferedfrom“TheGreatSmog”.Alotofcoalwasburnedathomeandinthefactoriesinthecoldwinter.Besides,therewasnowind.Therefore,thicksmogcoveredthecity.Activity4:ReadingthesummaryAbout4000peoplediedasaresultofthesmog.Nowadays,smogstillexistsbecauseitisproducedbychemicalscomingfromtrafficandfactories.Toreducethesmog,thegovernmentsaretakingsomemeasuresnowtoimprovetheairquality.Activity5:AnsweringthequestionQ.Whatisthepropertimetointerruptotherspolitely?Apoliteinterruptionisusuallyframedasarequestforpermissiontointerruptsomeone,oftenstartingwith“If…”,“MayI…?”or“CanI…?”.Usuallyweinterruptsomeonewhentheypauseforbreath,orduringtheslightpausebetweenspokenclauses.SpeakingReadthematerialsonpage84and87.Makeupanewdialogueaboutrecyclingbyusingtherequiredexpressions.ReadingthesampledialogueStudentA:Hello.Everyoneknowsit’simportanttoprotecttheenvironment.I’mgoingtotalkaboutrecycling.Pleasefeelfreetostopmeifyouhaveanyquestions.Sofirstofall,theclassificationofhouseholdwasteaimstohelppeopleseparatedifferenttypesofwaste.ThisisimportantbecausethesedifferenttypesofwastecanbedisposedofReadingthesampledialogueorrecycledappropriatelyandeffectively.AccordingtothematerialsIhavecollected,householdwastecanberoughlydividedinto:foodwaste,non-recyclablewaste,recyclablewaste,includingpaper,glass,plasticandusedbatteries.StudentB:Sorrytointerrupt,butIbelieveusedbatteriesareusuallyregardedasnon-recyclablewasteandshouldbedisposedofseparately.ReadingthesampledialogueStudentA:Sorry,I’vemadeamistake.Youareright.Theusedbatteriesarenon-recyclablewasteandshouldbedisposedofseparately.Thankyou.Chinaplanstointroducehouseholdwasteclassificationandsortinginthefirstbatchofcitiesby2020.OnlyBeijing,Shanghai,TianjinandChongqingareincludedinthefirstbatch.ReadingthesampledialogueStudentB:Excuseme.CanIaskanotherquestion?Youmentionedthatonlyfourcitiesareincludedinthefirstbatchofcitiestointroducehouseholdwasteclassificationandsorting.ButIrememberthatapartfromthesefourcities,allcapitalsofprovincesandautonomousregionsarealsoincludedinthefirstbatchofcities.Isthatright?ReadingthesampledialogueStudentA:Iamsorry.I’vemadeanothermistake.Youareright.Now,Let’sgobacktowhatIwastalkingabout.Thetargetrecyclingrateinthese