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1、湖南省蓝山二中高一英语必修四《unit1Wordpower》教案牛津版We’lllearninthissectionsomecommonsuffixesthatcanbeaddedtonounsorverbstocreateadjectives.Andalsosomevocabularyrelatedtosalesandmarketing.Step1:Brainstorming1.Pleasethinkaboutthefollowingquestions:Howarethefollowingwordsformed?health(noun)healthy(adjective)inte
2、rest(verb)interesting(adjective)AnEnglishwordcanhaveseveralderivatives.AndpleasepayattentiontothefactthatmanyEnglishwordssharethesamerootword,eventhoughtheyhavedifferentmeaningsorpartsofspeech.Nowhere’smoreexampleforyoutobetterunderstandwordformation.breath(n.)breathe(v.)breathless(adj.)act(v.
3、)action(n.)actor(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.Oftenyoumaycomeacrossunfamiliarwordswhilereadi
4、ng,trytouseknowledgeofwordformationtoguesstheirmeanings.Willyou?Andcanyougivemoreexamplesaboutwordformation?2.Shallwehaveacompetitiontoseewhocangivemoreexamplesorcreatemorewordsbyaddingsuffixesorprefixestotherootwords?3.Asweknow,sometimesanEnglishwordcanbemadeupofthreeparts:aprefix,astemandasu
5、ffix.Astemisthemainpartofaword.Aprefixisagroupoflettersaddedtothebeginningofaword.Asuffixisagroupoflettersplacedattheendofaword.Bothprefixesandsuffixesmodifythemeaningofawordorchangeitintoadifferentwordgroup.Thefollowingisatableofcommonprefixes:PrefixMeaningExamples(adjectives)un-Notunfair,unn
6、ecessary,unimportant,unhappyin-Notincorrect,invisible,incurable,inaccuratedis-showingoppositedisable,dishonest,disagree,disappear,discoverre-doagainrewrite,redo,rebuild,react,retell,recreatemis-badlyorwronglymisunderstand,misdirect,mistake,misuseStep2:LearningaboutWordformationEnglishitselfdoe
7、snotuseprefixesasheavilyasitoncedid,butmanyEnglishwordscomefromLatin,whichusesprefixesandsuffixes(youcanusethewordaffixtorefereithertoaprefixorasuffix)quiteextensively.Forexample,thewords"prefix,""suffix,"and"affix"themselvesareallforme
