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会话机制在系统功能语言学中是从语义协商的角度来进行研究的。本文以系统功能语言学的语义协商系统为基础,对语义协商的基本概念、理论架构进行了探讨、修正与拓展。研究表明,话步是承载一个独立的言语功能以进行意义协商的最小交际单位,具有动态灵活的体现方式。语气结构是意义协商的语法资源,反应者可以对主语、定谓成分、剩余成分进行协商。话步复合体是围绕一个核心功能展开的一系列话步。回合潜势结构应包括非语言手段及追踪、挑战等动态成分,还可以出现回合分裂和级转移。结构性与非结构性的协商机制共同完成语篇意义的协商。
The conversational mechanism is studied from the perspective of semantic negotiation in system functional linguistics. Based on the semantic negotiation system of system functional linguistics, this dissertation explores, modifies and expands the basic concepts and theoretical framework of semantic negotiation. The research shows that conversation walking is the smallest communicative unit that carries an independent speech function for meaningful negotiation and has a dynamic and flexible way of expression. The tone structure is the syntactic resource of meaning negotiation, and the respondent can negotiate the subject, the definite component and the remaining components. A walk-in complex is a series of steps that take place around a core function. Round potential structure should include non-verbal means and tracking, challenges and other dynamic components, but also can occur round split and level transfer. Structural and non-structural negotiation mechanism to complete the discourse consultation.