tailieunhanh - Báo cáo khoa học: "GETTINGAT DISCOURSEREFERENTS"

contrast with similar uses of the singular demonstrative pronoun that. I present evidence that the two pronouns it and that have pragmatically distinct contexts of use that can be characterized in terms of a remarkably simple set of preconditions. First, in §2 1 delineate the precise nature of the comparison made here. | GETTING AT DISCOURSE REFERENTS Rebecca J. Passonneau UNISYS Paoli Research Center . Box 517 Paoli PA 19301 USA ABSTRACT I examine how discourse anaphoric uses of the definite pronoun it contrast with similar uses of the demonstrative pronoun that. Their distinct contexts of use are characterized in terms of two contextual features persistence of grammatical subject and persistence of grammatical form which together demonstrate very clearly the interrelation among lexical choice grammatical choices and the dimension of time in signalling the dynamic attentional state of a discourse. 1 Introduction Languages vary in the number and kinds of grammatical distinctions encoded in their nominal and pronominal systems. Language specific means for explicitly mentioning and re-mentioning discourse entities constrain what Grosz and Sidner refer to as the linguistic structure of discourse 2 . This in turn constrains the ways in which discourse participants can exploit linguistic structure for indicating or inferring attentional state. At-tentional state Grosz and Sidner s term for the dynamic representation of the participants focus of attention 2 represents among other things-which discourse entities are currently most salient. One function of attentional state is to help resolve pronominal references. English has a relatively impoverished set of definite pronouns in which gender is relevant only in the 3rd person singular and where number a fairly universal nominal category is not relevant in the 2nd person. Yet even within the English pronominal system there is a semantic contrast that provides language users with alternative means for accessing the same previously mentioned entities therefore providing investigators of language with an opportunity to explore how distinct lexicogrammatical features correlate with distinct attentional processes. This is the contrast between demonstrative and nondemonstrative pronouns. In this paper I examine how certain uses of the .

• Báo cáo khoa học
• GETTINGAT DISCOURSEREFERENTS
• Rebecca J
• Passonneau
• Long Papers
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• model language
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• Dialog Control
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