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1、AcknowledgementsManypeoplehavemadeinvaluablecontributions,bothdirectlyandindirectly,tomyresearch.Ifeeldeepgratitudetoallthosewhohaveofferedmesupport,helpandencouragementduringmystudyinJiangsuUniversityofScienceandTechnology.Firstofall,Iamobligedtoexpressmysinceregratitud
2、etomysupervisorProfessorZhaoXiawhohasgivenmealotofguidanceinmystudyofcognitivelinguistics,andmadepainstakingeffortstoinstructmeinthethesis-writing.Herkindnessandefficiencywilldefinitelyexertprofoundinfluenceonmyfuturelifeandwork.MydeepthanksmustgotoProfessorChengShanzhen
3、,ProfessorZhouShujun,ProfessorGeJihong,ProfessorDaiYuqun,ProfessorZhangHongyan,ProfessorXiaGanlinandProfessorJiangWei,fortheirinstructivelecturesthatIhaveattended.Ishouldalsoexpressmygenuinegratitudetomywife,myclassmatesandroommateswhohavehelpedmeduringtheseyears.Lastbut
4、notleast,thethesisowesitsexistence,toalargeextent,toalargebodyofrelatedmaterials.Mybibliography,inthisrespectcanberegardedasthemostgenuineactofthankstotheauthorsofthosematerials.AbstractAbstractLexicalpolysemyisthemostpervasiveandthemostimportantsemanticphenomenoninEngli
5、sh.Therefore,ithasbeenthefocusoflinguists’researches.Thetraditionalstudiesareconfinedtotheexternalreasonsthatcausethechangesofmeaningsofpolysemouswordswithouttakingaccountoftheirunderlyingcognitivemechanisms.Theyfailtorevealtheessentialnatureofpolysemouswords.Thepolysemo
6、usphenomenonhasattractedmuchconcernofcognitivelinguiststoo.Someofthecognitiveresearchersfocusedtheirmindstoomuchontheclassificationofthesemanticsystemofpolysemouswords(王德春,2002).Otherslaytheiremphasisontheanalysisofpolysemousperceptionwordsorbodily-partwordssuchashandorh
7、eart.However,theresearchwhichsystematicallystudiesinternalsemanticrelationsofpolysemouswordsandexplainsthenatureofthedevelopmentofthemeaningsofpolysemouswordsisstillrareintermsofcognitivelinguistics.Thisthesisconductsastudyofpolysemouswordsfromacognitiveperspectivewithin
8、therelevanttheoreticalframeworkofcategorizationandprototype,metaphor,metonymyandimageschema,thegoalofwh
