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牛津版英语必修5unit3Scienceversusnature--WordPower.doc

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用心爱心专心 Unit3Scienceversusnature Teachingplanof“WordPower” Teachingobjects: learnprefixandsuffixandlearntoguessmeaningsbasedonprefixandsuffix learnorgansofthebody Teachingprocedures: IPrefixesandsuffixes StepILead-in appear,novel,regular,respect Wearegoingtohavesomequestions.Pleaseusethesewordstohelpyou,butyouneedtoaddsomeletterstothewordsfirst. 1)Youcannotfindyournewpen.Whathappenedtoyourpen?Itdisappeared 2)ManypeoplerespectMr.Liandthinkheisagoodman.Hehelpspeopleoutandisagoodcitizenandfriend.SocanyoufindawordtodescribeMr.Li? Respectable 3)MissWanghaspublishedseveralbooks.Shelovesherjobwritingnovels.SowhatisMissWang’soccupation(职业)?Sheisanovelist 4)Youcannotfindtheorderofthenumbersinagroupofmembers.Socanyoufindawordtodescribetheorderofthenumbers?irregular StepIIIntroduction independence independence prefix(前缀)root(词根)suffix(后缀) Prefix:agroupoflettersthatisaddedtothebeginningofawordtochangeitsmeaning. Suffix:aletteroragroupoflettersaddedtotheendofawordtomakeadifferentword. Attention! Usuallyaprefixwillchangethemeaningofword,whileasuffixwillchangethepartofspeechofaword. StepIIIPrefixes Sometimesyoucanguesswhatawordmeansbylookingatitsprefixorsuffix.Lookattheexamplesandworkoutthemeanings. PrefixExampleMeaninganti-anti-cloning,anticanceragainst,opposedtodis- un-disappear,disagree unfair,unwillingnot,apposedof in- il- im- ir-incorrect,incomparable illegal,illogical immoral,immodest irresponsible,irregular not,without pre-preview,preserveearly,beforepro-pro-cloninginfavourof,supportingre-recreate,repeat,renewagainStepIVAddinginformation Someothercommonlyusedprefixes PrefixExampleMeaningde-decompose,declassifyapart,frommal-maltreatment,malnutritionbadly,illnon-non-smoker,non-alcoholic,non-profitnotinter-international,interaction,interruptbetweentele-telescope,telegram,telecommunicationfarofftrans-transport,translate,transnationalacrossmis-misunderstand,mislead,misdeedwrongsub-subtitle,subway,submarineunderover-overeat,overwork,overacttoomuchtri-triangle,tricycle,trico