本文运用语言学研究的最新成果——语体学理论,结合教学实践,从词语运用、句法特征、章法布局、修辞手段等方面细致地分析概括了外经贸应用文书的语体特征,在这方面提出了不同于以往任何界说的独到见解。同时,本文首次使用了“语体规约”(“交际规约”)的概念,廓清了语言学界在这一问题上的淆乱。在将基础理论与外经贸实践相结合方面,本文也作出了有益的尝试。 Based on the latest achievements of linguistics research - stylistic theory and teaching practice, this thesis elaborates and summarizes the stylistic features of foreign trade instruments in terms of the use of words, syntactic features, the layout of rules and regulations, and rhetorical devices. In this respect Presented a different from any previous definition of unique insights. At the same time, this article for the first time uses the concept of “language convention” (“communication protocol”) to clarify the confusion of linguistics on this issue. In the basic theory and practice of foreign trade and economic integration, this article also made a useful attempt.