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主述位理论和交际动力是句子功能观中的基本概念。作者认为句子重音是对信息焦点的选择。本文以信息焦点为切入点,先以布拉格学派在功能句子观中有关主述位理论,分析主述位在话语中所负载的信息量及信息焦点,并研究信息焦点对句子重音分布造成的影响;文章再以布拉格学派Firbas提出的交际动力(CD)为基础,探讨CD值的大小和信息负载量的关系。交际是一个动态的过程,一个句子CD值最大的成分便是该句的信息焦点,在交际过程中可用重音标识;文章最后讨论了运用不同的重音模式来改变交际的信息焦点,从而达到预设的交际效果。
The main rhetoric theory and communicative motivation are the basic concepts in sentence function view. The author thinks sentence stress is the choice of information focus. In this paper, we use the information focus as the starting point. First, we use the Bragg school's theory of the main rhetoric in functional sentences to analyze the amount of information and information focus of the rhetoric in discourse and the impact of information focus on sentence stress distribution . Based on the Communicative Motivation (CD) proposed by Firbas in Prague School, the paper discusses the relationship between the size of CD value and the information load. Communication is a dynamic process. The maximum CD value of a sentence is the information focus of the sentence, and can be identified by accent in the process of communication. Finally, the paper discusses the use of different stress patterns to change the focus of communication, so as to achieve the preset The communicative effect.