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1、江苏省海头高级中学高中英语unit3Wordpower教案新人教版必修5Teachingaims:1.learnprefixandsuffixandlearntoguessmeaningsbasedonprefixandsuffix2.enlargestudents’vocabularyaboutorgansofthebodyStep1Wearegoingtohavesomequestions.Pleaseusethesewordstohelpyou,butyouneedtoaddsomeletterstothewordsfirstappear,novel,regular,re
2、spect1)Youcannotfindyournewpen.Whathappenedtoyourpen?()2)ManypeoplerespectMr.Liandthinkheisagoodman.Hehelpspeopleoutandisagoodcitizenandfriend.SocanyoufindawordtodescribeMr.Li?()3)MissWanghaspublishedseveralbooks.Shelovesherjobwritingnovels.SowhatisMissWang’soccupation(职业)?()4)Youcannotfindt
3、heorderofthenumbersinagroupofmembers.Socanyoufindawordtodescribetheorderofthenumbers?()Step2prefixandsuffixindependenceindependenceprefix(前缀)root(词根)suffix()Prefix:agroupoflettersthatisaddedtothebeginningofawordtochangeitsmeaning.Suffix:aletteroragroupoflettersaddedtotheendofawordtomakeadiff
4、erentword.★★Usuallyaprefixwillchangethemeaningofword,whileasuffixwillchangethepartofspeechofaword.Lookattheexamplesandworkoutthemeanings.PrefixExampleMeaninganti-anti-cloning,anticancer,（抗沙漠化）against,opposedtodis-disappear,disagree,not,apposedtoin-il-im-incorrect,incomparableillogical,（非法地）i
5、mmoral,immodest,not,withoutpreview,preserveearly,beforepro-cloninginof,supportingre-recreate,repeat,renew,(重写)againAddinginformationSomeothercommonlyusedprefixesPrefixExampleMeaningnon-non-smoker,,non-alcoholicnottrans-transport,translate,acrossmis-（误解）,mislead,misdeedwrongover-overeat,overw
6、ork,overacttoomuchStepIVSuffixesSuffixExampleMeaning-ablecomfortable,noticeable，（可理解的）worthyof,abletobe-istscientist,novelist，someonewhodoessomething-lesshopeless,aimless，（无私的）without-mentagreement,treatment，indicateastateorcondition-nessdryness,madness，indicateaquality,stateorcharacterAddin
7、ginformationSomeothercommonlyusedsuffixes-ioninvitation,competition,protection，actionorconditionof…-shiphardship,scholarship（）,relationshipstateofbeing,skill-proofwaterproof,fireproof,soundproof（）protectagainst-wardeastward,homeward,backward，inthed
