资源描述：
《高中英语 unit1 word power教案 译林牛津版必修4》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。
1、英语必修4译林牛津Unit1精品教案（3）Word●WordpowerWe’lllearninthissectionsomecommonsuffixesthatcanbeaddedtonounsorverbstocreateadjectives.Andalsosomevocabularyrelatedtosalesandmarketing.Step1:Brainstorming1.Pleasethinkaboutthefollowingquestions:Howarethefollowingword
2、sformed?health(noun)healthy(adjective)interest(verb)interesting(adjective)AnEnglishwordcanhaveseveralderivatives.AndpleasepayattentiontothefactthatmanyEnglishwordssharethesamerootword,eventhoughtheyhavedifferentmeaningsorpartsofspeech.Nowhere’smoreexam
3、pleforyoutobetterunderstandwordformation.breath(n.)breathe(v.)breathless(adj.)act(v.)action(n.)actor(n.)actress(n.)activity(n.)possible(adj.)impossible(adj.)possibility(n.)possibly(adv.)friend(n.),friendly(adj.),friendless(adj.),friendship(n.),unfriend
4、ly(adj.)Asyoucansee,manywordsarederivedbyaddingsuffixesorprefixestotherootwords.Oftenyoumaycomeacrossunfamiliarwordswhilereading,trytouseknowledgeofwordformationtoguesstheirmeanings.Willyou?Andcanyougivemoreexamplesaboutwordformation?2.Shallwehaveacomp
5、etitiontoseewhocangivemoreexamplesorcreatemorewordsbyaddingsuffixesorprefixestotherootwords?3.Asweknow,sometimesanEnglishwordcanbemadeupofthreeparts:aprefix,astemandasuffix.Astemisthemainpartofaword.Aprefixisagroupoflettersaddedtothebeginningofaword.As
6、uffixisagroupoflettersplacedattheendofaword.Bothprefixesandsuffixesmodifythemeaningofawordorchangeitintoadifferentwordgroup.Thefollowingisatableofcommonprefixes:PrefixMeaningExamples(adjectives)un-Notunfair,unnecessary,unimportant,unhappyin-Notincorrec
7、t,invisible,incurable,inaccuratedis-showingoppositedisable,dishonest,disagree,disappear,discoverre-doagainrewrite,redo,rebuild,react,retell,recreatemis-badlyorwronglymisunderstand,misdirect,mistake,misuseStep2:LearningaboutWordformationThebasicpartofan
8、ywordistheroot;toit,youcanaddaprefixatthebeginningand/orasuffixattheendtochangethemeaning.Forexample,intheword"unflattering,"therootissimply"flatter,"whiletheprefix"un-"makesthewordnegative,andthesuffix"-ing"changesitfromaverbintoanadje
