an analysis on an expository writing from the perspective of system―functional grammar

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1、AnAnalysisonanExpositoryWritingfromthePerspectiveofSystem―FunctionalGrammar　　【Abstract】Thematicprogression（TP）isakeytheoryinsystem?functionalgrammar.Itexplainsthetextualfunctionandtextcoherencebystudyingtheme，rhemeandsentencesequences.Throughstudyingthethematicprogressionofexpositorywriting，iti

2、sfoundthatconstantthemepatternandsimplelinearpatternaremostlyusedinexpositorywriting.　　【Keywords】thematicprogression；expositorywriting；system?functionalgrammar　　【中图分类号】G42【文献标识码】A【文章编号】2095-3089（2013）09-0090-01　　1.Introduction　　Thematicprogression（TP）isimportantfortextcoherence.Thestudieshavebe

3、enconductedbyscholarsabroadandathome.TheconceptofthemewasfirstlypointedoutbyCzechlinguisticF.Danes（1974）.HesummarizedfourtypesofTPpatterns，thatis，theconstantthemepattern，thesimplelinearpattern，thederivedthemepatternandthesplitrhemepattern（1974）.BloorandBloor（1995）i?dentifiedthesimilarpatterns.E

4、ggins（2004）pointed6outthreebasicpatterns，thatis，thethemereiteration，thezig?zagthemepatternandthemultiple?rhemepattern.ThethemereiterationissimilartotheconstantthemebyDanes（1974）.Thezig?zagthemepatterniswhatDanes（1974）categorizedasthesimplelinearpattern.Themultiplevrhemepatternisthesametothespli

5、trhemepatternbyDanes（1974）.Domestically，scholarshavealsoconductedstudiesonTPpatterns，suchasHu（1994）.Huhasidentifiedfourpatterns.Theyaretheconstantthemepattern，theconstantrhemepattern，thesimplelinearpatternandtheexchangepattern.　　Thetextisanexpositorywriting，whichintroducesfolkloreintheworld.Thi

6、sessaywillanalyzethewritingwiththecombinationofBloorandBloor’shypothesis（1995）andHu’s（1994）together.Apartfromoverlappingpatterns，sixpatternsareconcerned.Theyaretheconstantthemepattern，thesimplelinearpattern，thederivedthemepattern，thesplitrhemepattern，theconstantrhemepatternandtheexchangepattern

7、.　　2.RelationsbetweenTopicClausesandtheOpeningClause　　Intermsoflexicalsenserelation，thethemesoftopicsentencesarehyponymsofthethemeoftheopeningclause.Thehyponymyrelationbetweenthemindicatesthattheirthematicprogressionpatternisthede