Unit 5 The Power of Nature 教案1（人教版高中英语选修六)5页

山东省菏泽第一中学高中英语Unit5ThePowerofNature教案新人教版选修6Teachinggoals：Tohavethestudentsgetageneralideaofnaturaldisasters.Tohelpthestudentsdevelopspeakingability.Step1Warmingup1.Showanepisodeofthefilm“TheDayAfterTomorrow”andintroducethefilmtothestudents.Itisasciencefiction.Itdescribesthatthetemperatureintheearthfallsatagreatspeedandtheearthbeginstoentertheiceage,whichcausedagreatdisastertothepeopleintheworld.Infactthisdisasteriscausedbypeople’sdestructiontothenature.Inthefilmwecanfeelthepowerofnature.Naturaldisastersaredangerousandcancausegreatdamagetous.Canyouthinkofothernaturaldisasters?2.Askstudentstolistothernaturaldisasters,suchashurricane,earthquakes,volcano,etc.Showthepicturesofthesenaturaldisasters.3.Discussaboutthemeasuresthatweshouldtaketoavoidnaturaldisasters.Wecanfindhowpowerfulnatureisandhowweakhumansarecomparedwithavolcano,hurricane,earthquakeorothernaturaldisasters.Butwearenotcompletelypowerless.Wecantakemeasurestoprotectourselvesfrompowerfulnaturalforces.Whatmeasuresshouldwetake?4.Findsomethingaboutvolcano.Volcanoisoneofthesenaturaldisasters.Weshouldalsodosomethingtoavoiditseruptionorreduceitsdamagetous.Whatdoyouknowaboutvolcanoes?Howisavolcanoformed?Howdoesavolcanoerupt?5.Ifwecanpredicttheeruptionofvolcanoes,wecanreduceitsdamagetous.Soweneedvolcanologiststostudyvolcanoes.Doyouwanttobeavolcanologist?Why?Ifyouareavolcanologist,whatkindofworkshouldyoudoandwhatkindofdangerwillyoumeet?Step2Pre-readingMakeaquestionnaireasonpage33andhelpthemknowwhethertheyareinterestedinvolcanology.Homework:Findmoreinformationaboutnaturaldisasters,especiallyvolcanoes.Readarticlesaboutsomefamousvolcanoeseruption.Period2ReadingandComprehendingTeachinggoals：Toimprovethestudents’readingabilities.Tohelpthestudentstoknowhowtosummarizeatextoraparagraph.Step1Lead-in1.Free-talkAsksomestudentstodescribesomefamousvolcanoeruptionaccordingtotheirAfter-classreading.Showthevideoofvolcanoeruption.Wecanenjoytheexcitingsightofvolcanoeruption.Butvolcanoeruptioncanalsobringusalotofdamage.Soweneedvolcanologiststostudyvolcanoandreduceitsdamagetous.Let’slearnsomethingaboutvolcanologistsinthetext. Step2Skimming1.Readthroughthepassagequicklyandfindouttheanswerstothequestions.Whatkindofthingsshouldavolcanologistdo?Whatisthevolcanologistwearingwhengettingclosetothecrater?2.Dividethepassageintoseveralpartsandfindoutthemainideaofeachpart.Step3ScanningScanthepassage.Readthepassagecarefullyandanswerthefollowingquestions.Whyisavolcanologist’sjobimportant?WhereisMountKilauea?WhyisthelavathatflowsonMountKilaueamoredangerousthantheactualeruption?Whatcausedthewriter’sbedroomtobecomeasbrightasdayeventhoughitwasnight?Whydidthescientistshavetogetclosetothevolcanoafteritbeganerupting?Whywasitdifficultforthewritertowalktowardstheedgeofthecrater?Whatdoesthewriterfindimpressiveaboutvolcanoesevenafterstudyingthemfor20years?Step4DiscussionDoyouthinkitisanoccupationyouwouldenjoy?Discussyourreasonswithyourclassmates.Step5InterviewMakeupaninterview.Fourstudentsasagroup.Onestudentactsasthewriterofthepassage.TheotherthreestudentsactasthejournalistsfromthreedifferentTVstations.Homework:Spendsometimeresearchingonedisaster.Youcanusebooks,magazines,newspapersortheInternet.Collectpicturesanddiagramandlookforinformationabout:•whatcausesthiskindofdisaster•actualeventsthathappenedinthepastinchinaand/ortherestoftheworld•howpeoplehelpedthevictims•whatisbeingdonetopreventthedisasterhappeningagainortolessenthedamagePeriod3LearningaboutLanguageTeachinggoals：Tohelpthestudentstolearnhowtousewordsandexpressions.ToreviewtheV-ingformandlearntheperfectV-ingform.Step1DiscoverusefulwordsandexpressionsShowthevideoofanepisodeofVesuviuseruptionandaskstudentstofillinthetextwithproperwords.TheeruptionofMountVesuviusin79ADtookpeopleinPompeiibysurprise.Itwassoquickandsoseverethatthetownwassooncoveredin________and________.Manyhousesinthetownwere________.Itwasan________disasterformanypeoplewhocouldnotgetawayintime.AwriternamedPliny,whowasthereduringthe_______,describedhowlavawasthrownintotheairlikea________.________manyofthetownspeople,________atthe________sightofVesuviuseruption,stayedtoolongandfailedtoescapeintime.Findsuitablewordsorexpressionsfromthetextsintheunittofillintheblanksonpage35.Step2GrammarShowaflashtoreviewthedifferencesbetweenV-ingandthepastparticiple.现在分词表示主动，过去分词表示被动。现在分词表示进行中的动作，过去分词表示动作已完成。ShowaflashtoreviewtheV-ingformastheadverbial.分词的逻辑主语必须与主句的主语一致. 分词的动作不是主句的主语发出时,分词前面必须加上它的逻辑主语,这种分词短语叫做独立主格结构.当独立主格结构的逻辑主语泛指一般人,如we,you,one时,逻辑主语可以省略.Showthefollowingpairofsentencesonthescreen.Iwasfeelingtired.Iwenttobedearly.→Feelingtired,Iwenttobedearly.相当于AsIfelttired,Iwenttobedearly.Iworkedhardallday.Iwenttobedearly.→Havingworkedhardallday,Iwenttobedearly.相当于AfterIworkedhardallday,Iwenttobedearly.可以看出:分词的一般式说明分词的动作与主句谓语动词的动作是同时发生的.分词的完成式说明分词的动作发生在主句谓语动词的动作之前.巩固练习:现在分词的完成式和一般式进行互换.Studyingvolcanoes,Iamamazedattheirbeautyaswellastheirpotentialtocausegreatdamage.→Havingstudiedvolcanoesfortwentyyears,Iamstillamazedattheirbeautyaswellastheirpotentialtocausegreatdamage.Havingstoodforseveralminutes,Isawsomeofmyfriendschattingatatable.→Arrivingthere,Isawsomeofmyfriendschattingatatable.Writingtheletter,heleftoutsomethingimportant.→Havingwrittentheletter,hereaditcarefully.4.用分词的一般式改写句子:AsIdidn’tknowhowtofindthesubway,Icalledapolicemanforhelp.→Notknowinghowtofindthesubway,Icalledapolicemanforhelp.可以看出:分词的否定式是在分词短语前面加上not,never等否定词.5.小结-ing形式的用法–ing形式作状语用法例句时间Seeingthosepictures,sherememberedherchildhood.(=Whenshesawthosepictures….)条件Standingatthefootofahighmountain，youwillfindyourselfverysmall.(=Ifyoustandatthefootofahighmountain,….)让步KnowingwhereIlive,henevercomestoseeme.(=ThoughheknowswhereIlive,….)伴随Theystoodthereforhalfanhourwatchingthestarsinthesky.(=Theystoodthereforhalfanhourandwatchedthestarsinthesky.)原因Beingtired,Istoppedtotakearest.(=BecauseIwastired,…)结果Shewassoangrythatshethrewthetoyontheground,breakingitintopieces.(=Shewassoangrythatshethrewthetoyonthegroundandbrokeitintopieces.)V–ing形式的完成式作状语用法分词的完成式说明分词的动作发生在主句谓语动词的动作之前.例句Havingbrushedhisteeth，Mr.Browncamedownstairsforbreakfast.6.Findinthetextthesentenceswithv-ingformsortheperfect–ingform.7.完成36页与37页的关于分词的一般式和完成式的练习.Homework:1.完成workbook中对应的练习.2．完成分词专项练习。 Period4Usinglanguage中的ListeningandSpeakingTeachinggoals：Tohelpthestudentsimprovelisteningskills.Tolearnhowtoexpressfear,surpriseandanxiety.Tolearntodescribeanaturaldisasteraccordingtoexperienceorimagination.Step1lead-inAccordingtothefollowingsituation,makeupadialogueandactoutthedialogue.Fourstudentsasagroup.Situation:Yourgroupgotoavolcanotocollectasampleofboilinglava,takemeasurementinthecraterandflyoveravolcanotomakeamapofthedirectionofthelava.Youwillmeetalotofdifficultiesandhavetoovercomethem.这个任务也可在课前布置让学生去准备好,这样课堂上就直接让两组同学来表演.通过这样的导入,学生对听力材料会有似曾相识的感觉,而且会饶有兴趣地去听材料里面的内容,去弄清楚材料里的火山学家到底碰到什么样的困难,怎样去克服困难的.Step2ListeningFirstListening.Lookatthethreepicturesofvolcanologistsatwork.Thenlistentothemtalkingabouttheirmostfrighteningexperience.Writetheirnamesunderthepictures.SecondListeningListentothetapeagain.Answerthequestionsabouteachperson’sexperience.Howlonghashe/shebeenavolcanologist?Inwhatcountrywasthevolcanohe/shetalksabout?Whydidhe/sheforgettobefrightened?3.ThirdListeningAskstudentstoworkingroupsofthree,eachtakingtheroleofoneofthevolcanologistsandtellingthestorytoothersinthegroup.FourthListeningListentothetapeoncemore.Writethenameofthepersonbesidethethingstheysaid.Thisexercisealsotellsusthewaystoexpressfearandanxiety.Askindividualstudentstoreadthesentencesaloudtotheclass.Askthemtotrytorecallwhosaideachone.Playthetapeforstudentstoidentifytheexpressionsandrecordthenameofthespeaker.Itmaybenecessarytoplaythetapemorethanonce.Checkanswersbyplayingthetapeandstoppingwhenoneoftheexpressionisheard.Askstudentstoretelleachperson’sfrighteningexperience.Step3SpeakingThinkofapowerfulnaturalforce(suchasanearthquake,flood,typhoon,storm)thatyouhaveexperienced.Youcanuseyourimaginationifyouhavenotexperiencedanyofthesethings.Firstyoushouldtellyourpartneraboutyourexperienceandhowyoufelt.Andthenasksomestudentstotellthewholeclasshis/herexperienceandhowhe/shefelt.Homework:FinishtheListeningPracticeandListeningTaskintheworkbook.Makeupadialoguewithyourpartner.Whatshouldwedotopreventthedisasterhappeningagainorlessenitsdamage?Period4Usinglanguage中的ReadingandWritingTeachinggoals:LearnaboutTianchi,itslocation,views,legend,etc.Helpthestudentstoenjoythebeautyofnature. Improvetheabilityofwritingbywritingscenicspotsinyourhometownoryouhavevisited.Step1Lead-inAskstudentstodescribethetouristattractionstheyhavevisitedortheyknow.Showthepicturesofsomescenicspotsandstudentscanenjoytheirbeauty.ShowsomepicturesofChangbaishanandintroduceChangbaishantostudents.ShowsomepicturesofTianchiandintroduceTianchitostudents.AskstudentstoguesshowTianchiwasformed.Theycanhaveadiscussionaboutthisquestion.Step2FastReading1.Readthetextquicklyandfindoutthemainideaofeachparagraph.Paragraph1:TheintroductionofChangBaiShan.Paragraph2:TheintroductionofTianChi.Paragraph3:AstoryaboutTianChiParagraph4:DropacoinintoTianChitoguaranteeyourlove.2.Readingthearticleandtellthestatementsaretrueorfalse.1)ChangbaishanisthesecondlargestnaturereserveinChina.2)ThepeakofChangbaishancanreachashighas2,000meters.3)Youcanseealotofblackbears,leopardsorcranesinChangbaishan.4)Tianchiisalakeinthecraterofanextinctvolcano.5)TheancestorsoftheManchupeoplewerebelievedtobegoodatlanguageandpersuasion.Step3CarefulReadingReadthefirstparagraphandanswerthefollowingquestions.WhereisChangBaiShan?HowimportantisChangBaiShan?HowhighisChangBaiShan?WhatkindsofrareanimalsarethereintheChangBaiShan?WhydopeoplecometoChangBaiShan?What’sthemostpopularattractionofChangBaiShan?Readthesecondparagraphandanswerthefollowingquestions.1)HowwasTianchiformed?2)HowhighandhowdeepisTianchi?3)WhatkindsofsightscanyouseeinTianchi?ReadthethirdparagraphandtellthewholeclassthestoryaboutTianchi.Readthefourthparagraphandanswerthequestion:WhatshouldyoudoifyougotoTianchiwithyourlovedone?Step4RetellingRetellthewholetextreferringtothegivenquestions.Step5writingNatureissobeautiful.Showsomepictures.Wecanseethatwhenitischeerfulitisbeautiful.Isittruethatnaturecouldalwaysremainbeautifulandcalm?No!Showsomepicturesandwecanfindthatwhenitgetsangryitwillnotbebeautifulanditwillbeugly.Soifwewanttoseethebeautifulnaturewemustkeepnaturecheerful,weshouldn’tdestroyitandwemustprotectit.Discussthequestion“Whyandhowcanwekeepournaturecheerful?”HomeworkWriteanarticle“Whyandhowcanwekeepournaturecheerful?”