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【Abstract】Swales’ CARS model is a robust method of genre analysis.The model is first designed for article introductions； its application covers a wide range from academic to non-academic.The present paper is completely a theoretical framework.At last，future research is proposed.
【Key words】genre； move
1.Introduction
In the analysis of text，we can start from the form （looking at past participles or imperatives，for example，and then establishing their use） or we can start by trying to establish what the author is trying to do in the text or move （“establishing a territory” for example） and then looking to see what forms （phonological，lexical and grammatical） are used to realize each move or the steps that make up these moves.It is this latter method that Swales chose as the preferred method for genre analysis… （Bloor，1998，p.60） Genre analysis is the study of situated linguistic behavior in institutionalized academic or professional settings… （Bhatia，1997，p.181）
A genre can be briefly defined as a class of texts characterized by a specific communicative function that tends to produce distinctive structural patterns （Holemes，1997，p.322）.While the most popular definition of genre is still provided by Swales （1990，p.58）：
A genre comprises a class of communicative events，the members of which share some set of communicative purposes.These purposes are recognized by the expert members of the parent discourse community，and thereby constitute the rationale for the genre.This rationale shapes the schematic structure of the discourse and influences and constrains choice of content and style.Communicative purpose is both a privileged criterion and one that operates to keep the scope of genre as here conceived narrowly focused on comparable rhetorical action.In addition to purpose，exemplars of a genre exhibit various patterns of similarity in terms of structure，style，content and intended audience.The main characteristic of Swales’ analysis in his（1990） seminal work is the division of the text into phases or ‘moves’，further subdivided into ‘steps’（Toledo，2005，p.1063）.A ‘move’ is a unit that relates both to the writer’s purpose and to the content that s/he wishes to communicate.A ‘step’ is a lower level text unit than the move that provides a detailed perspective on the options open to the writer in setting out the moves in the introduction （Dudley-Evans
【Key words】genre； move
1.Introduction
In the analysis of text，we can start from the form （looking at past participles or imperatives，for example，and then establishing their use） or we can start by trying to establish what the author is trying to do in the text or move （“establishing a territory” for example） and then looking to see what forms （phonological，lexical and grammatical） are used to realize each move or the steps that make up these moves.It is this latter method that Swales chose as the preferred method for genre analysis… （Bloor，1998，p.60） Genre analysis is the study of situated linguistic behavior in institutionalized academic or professional settings… （Bhatia，1997，p.181）
A genre can be briefly defined as a class of texts characterized by a specific communicative function that tends to produce distinctive structural patterns （Holemes，1997，p.322）.While the most popular definition of genre is still provided by Swales （1990，p.58）：
A genre comprises a class of communicative events，the members of which share some set of communicative purposes.These purposes are recognized by the expert members of the parent discourse community，and thereby constitute the rationale for the genre.This rationale shapes the schematic structure of the discourse and influences and constrains choice of content and style.Communicative purpose is both a privileged criterion and one that operates to keep the scope of genre as here conceived narrowly focused on comparable rhetorical action.In addition to purpose，exemplars of a genre exhibit various patterns of similarity in terms of structure，style，content and intended audience.The main characteristic of Swales’ analysis in his（1990） seminal work is the division of the text into phases or ‘moves’，further subdivided into ‘steps’（Toledo，2005，p.1063）.A ‘move’ is a unit that relates both to the writer’s purpose and to the content that s/he wishes to communicate.A ‘step’ is a lower level text unit than the move that provides a detailed perspective on the options open to the writer in setting out the moves in the introduction （Dudley-Evans