英语中的词缀与词根ppt课件.ppt

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1、APresentationCreatedbyTEACHERSUNLEASHEDPrefixes,Suffixes,AffixesandRootWordsRootwordsandBasewordsRootWordsandBaseWordsarethesame.Rootwordsandbasewordsarethemostbasicpartofaword.Ifyouaddanaffixtoarootorbasewordyouchangethemeaningoftheword.“Cook”isabase

2、word.AffixesAffixesarewordpartsthatchangethemeaningofarootorbaseword.PrefixesandSuffixesarebothAffixes.un+cook+ed=uncookedAffixAffixPrefixesPrefixesarewordparts(affixes)thatcomesatthebeginningoftherootwordorbaseword.un+cook+ed=uncookedPrefixAffixSuffi

3、xSuffixesarewordparts(affixes)thatcomeattheendoftherootwordorbaseword.un+cook+ed=uncookedPrefixSuffixPrefix:im-Meaning:notExamples:impossibleimpolitePrefix:inMeaning:notExamples:invisibleinfamousPrefix:nonMeaning:notExamples:non-stopnon-stickPrefix:di

4、sMeaning:notExamples:disorganizeddisobeyPrefix:misMeaning:wrongExamples:misreadmisspellIkanspellgud.Prefix:unMeaning:notExamples:unluckyunbelievablePrefix:overMeaning:ToomuchExamples:overcookedoverdramaticPrefix:underMeaning:beneath,underExamples:unde

5、rwearunderwaterPrefix:reMeaning:todoagainExamples:recyclerecountPrefix:preMeaning:beforeExamples:previewpreschoolPrefix:subMeaning:underExamples:subordinatesubmarinePrefix:superMeaning:above,overExamples:superhumansupermarketPrefix:interMeaning:betwee

6、nExamples:interveneinterstatePrefix:foreMeaning:beforeExamples:forecastforeseePrefix:deMeaning:down,awayExamples:descenddegradePrefix:transMeaning:TomoveExamples:transfertransportationPrefix:semiMeaning:incomplete,halfExamples:semicirclesemi-formalPre

7、fix:midMeaning:InthemiddleExample:midpointPrefix:hemiMeaning:halfExample:hemispherePrefix:proMeaning:for,forwardExamples:promotionprotestPrefix:conMeaning:with,togetherExamples:connectconfidePrefix:comMeaning:togetherExamples:communitycommunicatePrefi

8、x:exMeaning:Outof,fromExamples:exitexhalePrefix:coMeaning:togetherExamples:co-pilotcooperatePrefix:multiMeaning:manyExamples:multicoloredmultivitaminPrefix:polyMeaning:manyExample:polygonPrefix:uniMeaning:oneExamples:unicycleuniversalPrefix:qu