2020-2021年高中英语（人教大纲）第二册上：Unit9 Saving the earth(第四课时)

可编辑修改可编辑修改精选文档精选文档可编辑修改精选文档2019-2020年高中英语（人教大纲）第二册上：Unit9Savingtheearth(第四课时)TeachingAims:1.Learnandmasterthefollowingwords:defend,incorrect,affect,advise2.Trainthestudentslisteningandspeakingabilities.3.Learntowriteanevaluationparagraph.TeachingImportantPoints:1.Mastertheusefulwordsandphrasesappearinginthisperiod.2.Learntosupportanopinionbothinspeakingandwriting.TeachingDifficultPoint:Howtohelpthestudentsfinisheachtaskandimprovetheirskillstouselanguage.TeachingMethods:1.Oralpracticetotrainthestudents'speakingability.2.Writtenworktotrainthestudents'writingability.3.Individual,pairorgroupworktomakeeverystudentworkinclass.TeachingAids:1.ataperecorder2.aprojector4.theblackboardTeachingProcedures:StepIGreetingsGreetthewholeclassasusual.StepIIRevisionandLead-inT:Yesterday,welearnttheuseofInversionanddidsomeexercises.Canyoutellmethedifferencebetweeninvertedsentencesandusualsentences?WuLi,wouldyouliketohaveatry?Sl:Yes.Inaninvertedsentence,partofthepredicateorthewholepredicateesbeforethesubject.Inausualsentence,thepredicateesafterthesubject.T:Quiteright.Sitdown,please.ThenforwhatreasonsdoyouthinkInversionisused?Anyvolunteer?S2:IthinkInversionisusedfortworeasons.Onefortheneedofthegrammaticalstructureofacertaintypeofsentencetheotherforemphasisofacertainpartofasentence.T:Quiteright.Now,let'sdoanexercise,Lookatthescreenandwriteyouranswersonapieceofpaper.ThenI'11checktheanswerswiththewholeclass.(Teachershowsthefollowingonthescreen.)可编辑修改可编辑修改精选文档精选文档可编辑修改精选文档RewritethefollowingsentencesusingInversion.1.Wecanfinishtheworkontimeonlybyseizingeveryminute.________________________________________________finishtheworkontime.2.Ihaveneverheardsuchnonsenseinallmylife.___________________________heardsuchnonsenseinallmylife.3.Apieceofpaperwasfoldedinthepocket.________________________________apieceofpaper.4.Helittlerealizeshowimportantthisheartoperationis.___________________________howimportantthisheartoperationis.5.Churchillwasnotonlyastatesmanbutalsoapoet.___________________Churchillastatesmanbutalsoapoet.Suggestedanswers:1.Onlybyseizingeveryminutecanwe2.NeverhaveI3.Foldedinthepocketwas4.Littledoesherealize5.NotonlywasT:Welldone.Besides,we'vereadapassageinthisunitabouttheEarthSummitandenvironmentalproblemsandsolutions.Whatwordswe'velearntinthisunitcanhelpusdescribeenvironmentproblemsandsolutions?Ss:Sustainabledevelopment,contaminateddrinkingwater,poorsanitation,airpollution,killer,poverty,war,violence,equality,fairness,takeaction,makechanges,education,inharmonywithnature...T:Oh.Somany.Ihopeyoucanrememberandusethem.WeknowtheEarthSummitmainlytalksaboutenvironmentproblemsandsolutions.ExpertsfromallovertheworldareweletotheEarthSummit,speakingaboutdifferenttopicsanddiscussingnewwaystosolveoldproblems.TodaywearegoingtolistentothevoicesoftheEarthSummit.Andwe'lltalkabouttheenvironmentproblemagain.First,let’slearnthenewwordsinthisperiod.(Teachershowsthenewwordsonthescreenandgivesbriefexplanations.)(Bb:alternative—alternate;defendagainst/from;incorrect--correct;affect/effect;advisesb.(not)todosth.,advisedoingsth.)StepIIIListeningandSpeakingT:Well,nowpleaseopenyourbooksatPage71.LookatthefirstpartinListeningandSpeaking:ListentothespeechesfromtheEarthSummitandpletetheoutlinesbelow,可编辑修改可编辑修改精选文档精选文档可编辑修改精选文档I'llplaythetapetwicecontinuously.Listencarefullyandfinishyourtask.Attheend,I'llcheckyouranswers.(Afterlistening,teacherintroducesthenexttask.)T:Welldone.You'veunderstoodthespeechesexactly.Doyouagreewithwhattheyaresaying?Workinpairstotalkaboutthisquestion.Writedownyourthoughts,ments,opinionsandquestionsaboutwhattheysaid.Prepareforafewminutes.Thenwe'llgoonwiththenexttask.(Afewminuteslater.)T:OK.Nowyouhaveachancetomakeyourownspeech.Useyournotesandthinkaboutwhatyouwouldliketosay.First,writeanoutline,andthengivethespeechinclass.Makesurethatyouarereadytoanswerquestionsanddefendyourargument.Areyouclear?Ss:Yes.T:Youcanbegintopreparetotitnow.(Anotherfewminuteslater.)T:Areyouready?Ss:Yes.T:OK.Nowlet'sbeginourspeech.Eachstudentshouldlistentoyourclassmate'sspeechescarefullyandgetreadytoaskthemquestions.Who'dliketobethefirsttogiveyourspeech?Anyvolunteer7S:…(Oneofthestudentsstandsupandgiveshisspeech.Theothersgoon.Afterthespeeches,teachershowsthefollowingonthescreen.)Tipsforpreparingaspeech:Knowinghowtogiveagoodspeechisausefulskill.Ifyouwanttogiveagoodspeech,thereareafewthingsyouneedtoconsider.I.Thinkaboutyouraudiencea.Whowilllistentoyourspeech?b.Whataretheyinterestedin?c.Whatdotheywanttoknow?d.Whatdotheyalreadyknow?Outlineslikethesewillhelpyoudecidewhatyouaregoingtosay.II.Prepareandpractisea.Researchyourtopiccarefullyandorganisethematerial,b.Beforeyougivethespeech,practiseinfrontofamirrorortogetherwithafriend.T:Yourspeecheswereallmadesuccessfully,butinorderyoucanmakeabetterspeech,Igiveyousomeadviceonpreparingaspeech.Lookatthescreen.Let'sstudytogether.…StepIVWritingT:Asweallknow,environmentproblemsarebeingmoreandmoreseriouswiththedevelopmentofmodernagricultureandindustry.Amongalltheproblems,whichdoyouthinkisthemostseriousone?Whydoyouthinkso?Whatdoyouthinkshouldbedonetosolveit?Nowwriteaparagraphtotellyourreaderabout可编辑修改可编辑修改精选文档精选文档可编辑修改精选文档thesequestions.(TeacherwritesthequestionsontheBb.)T:Youcanprepareyourparagraphasfollows:First,writeasentencethatstatesyouropinion,forexample,“Ithinkthatairpollutionisthemostseriousproblembecauseitdoesgreatharmtoourhealth.”Thenlistasmanyreasonsaspossible.Finally,usethesentencestoorganiseyourparagraph.Areyouclear?Ss:Yes.T:Well.I'llshowyousomewordsandphrasesonthescreen.Youcanrefertothem.Afterfinishingyourparagraph,usethechecklistinUnit2tocheckitforerrorsandmistakes.Areyouclear?Ss:Yes.(Teachershowsthefollowingonthescreenandthestudentsbegintowork.)Manyproductsarebadfortheenvironment.Itiswrongtobuyproductsthatareharmfultotheenvironment.Tothinkthatthereisnothingwecandoisincorrect.WhatwedoisimportantbecauseitaffectstheenvironmentIsuggestthatwedosomethingabouttheseproblems.Iwouldadvisepeoplenottobuyproductsthatharmtheenvironment.Iremendthatallofusshouldthinkaboutwhatwedoandwhatwebuy.StepVSummaryandHomeworkT:Youalldidverywellinclass.Nowlet'sseewhatwe'vedoneinthisperiod.First.we'verevisedthepreviouscontents,includingthetextandthegrammar.Second,we'vedonesomelisteningandspeaking.Thenwe'velearnttowriteanevaluationparagraph.Alltheseactivitiescenteronthesubject“environmentproblemsandabsolution”.Everyoneshouldmakeanefforttotakecareofourplanet.Doyouthinkso?Ss:Yes.T:Besides,we'velearntsomeusefulwordsandphrases,suchas…Afterclass,pleasepractisemoretoimproveyourabilitytouselanguage.Somuchfortoday.Seeyoutomorrow!Ss:Seeyoutomorrow!可编辑修改可编辑修改精选文档精选文档可编辑修改精选文档StepVITheDesignoftheWritingontheBlackboardUnit9SavingtheearthTheFourthPeriodI.WordsandPhrases:alternative--alternateincorrect--correctdefendagainst/fromaffect/effectadvisesb.(not)todosth.advisedoingsth.II.anevaluationparagraphWhatdoyouthinkisthemostseriousone?Whydoyouthinkso?Whatdoyouthinkshouldbedonetosolveit?StepVIIRecordafterTeaching.