Unit9Savingtheearth-TheFourthPeriodTeachingAims: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,partofthepredicateorthewholepredicatecomesbeforethesubject.Inausualsentence,thepredicatecomesafterthesubject.T:Quiteright.Sitdown,please.ThenforwhatreasonsdoyouthinkInversionisused?Anyvolunteer?S2:IthinkInversionisusedfortworeasons.Onefortheneedofthegrammaticalstructureofacertaintypeofsentencetheotherforemphasisofacertainpartofasentence.T:Quiteright.Now,let'sdoanexercise,Lookatthescreenandwriteyouranswersonapieceofpaper.ThenI'11checktheanswerswiththewholeclass.(Teachershowsthefollowingonthescreen.)用心爱心专心115号编辑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.ExpertsfromallovertheworldarewelcometotheEarthSummit,speakingaboutdifferenttopicsanddiscussingnewwaystosolveoldproblems.TodaywearegoingtolistentothevoicesoftheEarthSummit.Andwe'lltalkabouttheenvironmentproblemagain.First,let’slearnthenewwordsinthisperiod.(Teachershowsthenewwordsonthescreenandgivesbriefexplanations.)(Bb:alternative—alternate;defendagainst/from;incorrect--correct;affect/effect;advisesb.(not)todosth.,advisedoingsth.)用心爱心专心115号编辑StepIIIListeningandSpeakingT:Well,nowpleaseopenyourbooksatPage71.LookatthefirstpartinListeningandSpeaking:ListentothespeechesfromtheEarthSummitandcompletetheoutlinesbelow,I'llplaythetapetwicecontinuously.Listencarefullyandfinishyourtask.Attheend,I'llcheckyouranswers.(Afterlistening,teacherintroducesthenexttask...
