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1、2019-2020年高中英语Unit1Wordpower教案译林牛津版必修4We’lllearninthissectionsomemonsuffixesthatcanbeaddedtonounsorverbstocreateadjectives.Andalsosomevocabularyrelatedtosalesandmarketing.Step1:Brainstorming1.Pleasethinkaboutthefollowingquestions:Howarethefollowingwordsformed?health(noun)healthy(adjective)interest(v
2、erb)interesting(adjective)AnEnglishwordcanhaveseveralderivatives.AndpleasepayattentiontothefactthatmanyEnglishwordssharethesamerootword,eventhoughtheyhavedifferentmeaningsorpartsofspeech.Nowhere’smoreexampleforyoutobetterunderstandwordformation.breath(n.)breathe(v.)breathless(adj.)act(v.)action(n.)a
3、ctor(n.)actress(n.)activity(n.)possible(adj.)impossible(adj.)possibility(n.)possibly(adv.)friend(n.),friendly(adj.),friendless(adj.),friendship(n.),unfriendly(adj.)Asyoucansee,manywordsarederivedbyaddingsuffixesorprefixestotherootwords.Oftenyoumayeacrossunfamiliarwordswhilereading,trytouseknowledgeo
4、fwordformationtoguesstheirmeanings.Willyou?Andcanyougivemoreexamplesaboutwordformation?2.Shallwehaveapetitiontoseewhocangivemoreexamplesorcreatemorewordsbyaddingsuffixesorprefixestotherootwords?3.Asweknow,sometimesanEnglishwordcanbemadeupofthreeparts:aprefix,astemandasuffix.Astemisthemainpartofaword
5、.Aprefixisagroupoflettersaddedtothebeginningofaword.Asuffixisagroupoflettersplacedattheendofaword.Bothprefixesandsuffixesmodifythemeaningofawordorchangeitintoadifferentwordgroup.Thefollowingisatableofmonprefixes:PrefixMeaningExamples(adjectives)un-Notunfair,unnecessary,unimportant,unhappyin-Notincor
6、rect,invisible,incurable,inaccuratedis-showingoppositedisable,dishonest,disagree,disappear,discoverre-doagainrewrite,redo,rebuild,react,retell,recreatemis-badlyorwronglymisunderstand,misdirect,mistake,misuseStep2:LearningaboutWordformationThebasicpartofanywordistheroot;toit,youcanaddaprefixatthebegi
7、nningand/orasuffixattheendtochangethemeaning.Forexample,intheword"unflattering,"therootissimply"flatter,"whiletheprefix"un-"makesthewordnegative,andthesuffix"-ing"changesitfromaverbintoanadjective(spe
