unit 3 science versus nature word 教学设计

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1、Unit3ScienceversusNatureWord教学案Teachingaims:1.Learnprefixandsuffixandlearntoguessmeaningsbasedonprefixandsuffix2.Enlargestudents’vocabularyaboutorgansofthebodyStep1Wearegoingtohavesomequestions.Pleaseusethesewordstohelpyou，butyouneedtoaddsomeletterstothewordsfirstap

2、pear，novel，regular，respect1)Youcannotfindyournewpen.Whathappenedtoyourpen？()2)ManypeoplerespectMr.Liandthinkheisagoodman.Hehelpspeopleoutandisagoodcitizenandfriend.SocanyoufindawordtodescribeMr.Li？()3)MissWanghaspublishedseveralbooks.Shelovesherjobwritingnovels.Sowh

3、atisMissWang’soccupation(职业)？()4)Youcannotfindtheorderofthenumbersinagroupofmembers.Socanyoufindawordtodescribetheorderofthenumbers？()Step2prefixandsuffixindependenceindependenceprefix(前缀)root(词根)suffix()Prefix:agroupoflettersthatisaddedtothebeginningofawordtochange

4、itsmeaning.Suffix:aletteroragroupoflettersaddedtotheendofawordtomakeadifferentword.★★Usuallyaprefixwillchangethemeaningofword，whileasuffixwillchangethepartofspeechofaword.Lookattheexamplesandworkoutthemeanings.PrefixExampleMeaninganti-anti-cloning，anticancer，(抗沙漠化)a

5、gainst，opposedtodis-disappear，disagree，not，apposedtoin-il-im-incorrect，incomparableillogical，(非法地)immoral，immodest，not，withoutpre-preview，preserveearly，beforepro-pro-cloninginof，supportingre-recreate，repeat，renew，(重写)againAddinginformationSomeothercommonlyusedprefix

6、esPrefixExampleMeaningnon-non-smoker，，non-alcoholicnottrans-transport，translate，acrossmis-(误解)，mislead，misdeedwrongover-overeat，overwork，overacttoomuchStepIVSuffixesSuffixExampleMeaning-ablecomfortable，noticeable，(可理解的)worthyof，abletobe-istscientist，novelist，someone

7、whodoessomething-lesshopeless，aimless，(无私的)without-mentagreement，treatment，indicateastateorcondition-ness]dryness，madness，indicateaquality，stateorcharacterAddinginformationSomeothercommonlyusedsuffixes-ioninvitation，competition，protection，actionorconditionof…[K]-shi

8、phardship，scholarship()，relationshipstateofbeing，skill-proofwaterproof，fireproof，soundproof()protectagainst-wardeastward，homeward，backward