英语派生构词法--词缀教案

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1、Title:DerivationandWordSpellingClassstyle:NewPeriod:OneTeachingmethod:ExamplesandExplanationTeachingtools:ExercisepaperTeachingGoals:①Letssbefamiliarwithcommonprefixesandsuffixes②TeachssagoodwaytodowordspellingImportantpoints:themeaningsofdifferentprefixesors

2、uffixesDifficultpoints:howtofillinwordspellingwithcorrectformsTeachingprocess:Step1:Leading-inTodaywewillreviewawayofword-formationwehavelearnedbefore----DerivationFirstly,Iwanttoaskaquestion:Whatisderivation（派生）?Lookattheblackboardablydisableunableableabably

3、enableabilityInconclusion,由一个词根加上前缀和（或）后缀构成一个新词。词缀有两个作用，形成新的词意和词性。Eg.independentinternationalStep2:Warming-upLet’sdosomeexercisestocheckupyourunderstandingaboutitEX1.Completethefollowingsentencesbyaddingaprefixtothewords.1.Rosesaidthatitwas___fairifDadgavemea

4、dictionarybutgaveheronlyadiary.2.Themother___dressedthebaby,thenputhiminabasinofwarmwater.3.Thoughhedidn’twinanymedalsinthelastsportsmeet,hewasnot___couraged.4.It’s___possibleforanyonetofinishtheworkwithinsuchashorttime.5.Pleasedon’t____understandwhatIhavesai

5、d.6.Thisclothwouldbe___visibletoanyonewhowas___fitfortheofficeheheldFromtheexercises,wecanseemanyprefixes.Thenlet’sdonextexercises.EX2.Addanegativeprefixtoeachgrouptocreatewordswithoppositemeaning.____-appearabilityagreehonest____-usualexpectedexperiencedw

6、illinghappyluckyfortunately____-convenientcorrectcapablevisible____-possiblepolitemature____-stopsmokers____-understandtakefortuneleadStep3:Expanding&ConclusionPrefixeschangethemeaningofthewords.Doyouknowthemeaningofthefollowingprefixes?Canyoulistmorewordswit

7、htheseprefixes?Comeon!EX3.re—retellen--encouragepost--postwarpre—pre-readingunder--undergroundover--overworksub--subwaySino—Sino-AmericanStep4:SuffixNow,let’sreviewsomesuffixes.Suffixeschangethespeechesofthewords.EX4.加后缀时的拼写规则：①以不发音e结尾的去掉e再加后缀→②以辅音字母+У结尾的变У为i

8、再加后缀satisfy→satisfied③以重读辅元辅音节双写最后一个字母再加后缀sun→sunnyadj.--able(加在名词、动词后)“可----的”“能-----的”knowablevaluableunforget___--ful(加在名词后)①“充满时的量”handfulmouthfulspoonful②“富有----的”“充满---的”carefulhope