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1、课题SEFCB2Unit13Thewaterplanet课时7授课日期3.8-3.16教学目标1.Talkaboutwaterandtheocean2.Practicemakingsuggestionsandexpressingopinions3.ReviewModalVerbs4.Writeanexplanationparagraph教学重难点1.Someimportantwordsandexpressions2.Learntomakesuggestionsandexpressopinions3.GrammarModalVerbs教学用具1.ar
2、ecorder2.ablackboard3.themultimedia4.somethingspecialfortheexperiments(eg.Oil,water,glass,icecube)背景知识：WaterPollutionWhatisnecessarytolifeonearth.Allorganismscontainit;someliveinit;somedrinkit.Plantsandanimalsrequirewaterthatismoderatelypure,andtheycannotsurviveiftheirwaterisl
3、oadedwithtoxicchemicalsorharmfulmicroorganisms.Ifsevere,waterpollutioncankilllargenumbersoffish,birds,andotheranimals,insomecaseskillingallmembersofaspeciesinanaffectedarea.Pollutionmakesstreams,lakes,andcoastalwatersunpleasanttolookat,tosmell,andtoswimin.Fishandshellfishharve
4、stedfrompollutedwatersmaybeunsafetoeat.Peoplewhoingest３３pollutedwatercanbecomeill,and,withprolongedexposure,maydevelopcancersorbearchildrenwithbirthdefects.Themajorwaterpollutantsarechemical,biological,orphysicalmaterialsthatdegradewaterquality.Pollutantscanbeclassedintoeightc
5、ategories—petroleumproducts;pesticidesandherbicides;heavymetals;hazardouswastes;excessorganicmatter;sediment;infectiousorganismsandthermalpollution--eachofwhichpresentsitsownsetofhazards.Unit13ThewaterplanetTheFirstPeriodWarming-up,ListeningandSpeakingTeachingAims:1.Learnandma
6、sterthenewwordsandtheusefulexpressionsofthispartWords:cube,sailor,disadvantages,entertainmentPhrases:comeupwith,happentoUsefulexpressions:Thewaterisbeingusedto/for…Weshould/could…Ifwe…wecan…Itwouldbebetter…2.Learnsomethingaboutwaterbydoingexperiment.3.Dosomelistening4.Improvet
7、hestudents’speakingabilitybytalkingTeachingImportantPoints:1.Makethestudentsbefreetotalkaboutwater.３３1.Improvethestudents’listeningabilitybypractice.TeachingDifficultPoints:1.Howtofinishthetaskofspeaking.2.Howtoimprovethestudents’listeningability.TeachingMethods:1.Listening-an
8、d-answeringactivitytohelpthestudentsgothroughwiththelistening
