Abstract The study of multimodality in discourse reveals the way writers articulate their intended meanings and intentions. Systemic functional analyses of oral biology discourse have been limited to few studies; yet, no published study has investigated multimodal textual features. This qualitative study explored and analyzed the multimodal textual features in undergraduate dentistry texts. The systemic functional multimodal discourse analysis (SF-MDA) is framed by Halliday’s (Halliday, M. A. K. 2014. Introduction to Functional Grammar. Revised by Christian M. I. M. Matthiessen. 4th ed. London/New York: Taylor and Francis) linguistic tools for the analysis of Theme and Kress and van Leeuwen’s (Kress, Gunther, and Theo van Leeuwen. 2006. Reading Images: The Grammar of Visual Design. London: Routledge) framework for the analysis of visual designs. Oral biology discourse intertwines two thematic progression patterns: constant and linear. Although a split-rheme pattern was minimally employed, disciplinary-specific functions of this pattern emerged. The SF-MDA of the composition of information in oral biology pictures extends Kress and van Leeuwen’s functional interpretations of the meaning-making resources of visual artifacts. Finally, the pedagogical implications for science tutors and for undergraduate nonnative science students are presented.

中文翻译：

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沙特大学本科生英语牙科课本的多模式话语分析：主题与信息结构研究

摘要语篇中的多模态研究揭示了作者表达其意图意义和意图的方式。口腔生物学话语的系统功能分析仅限于很少的研究。但是，尚未有发表的研究调查多式联运的文字特征。这项定性研究探索和分析了本科牙科课本中的多模式文本特征。系统功能性多模态话语分析（SF-MDA）由Halliday（Halliday，MAK 2014.Functional Grammar简介。由Christian MIM Matthiessen修订，第四版，伦敦/纽约：泰勒和弗朗西斯）构架，用于分析主题和Kress和van Leeuwen的框架（Kress，Gunther和Theo vanLeeuwen。2006年。阅读图像：视觉设计语法；伦敦：Routledge）用于分析视觉设计的框架。口语生物学话语交织着两个主题发展模式：恒定和线性。尽管最小限度地采用了大写字母模式，但出现了该模式的特定学科功能。口腔生物学图片中信息组成的SF-MDA扩展了Kress和van Leeuwen对视觉人工制品意义资源的功能解释。最后，介绍了对科学导师和非自然科学本科生的教学意义。口腔生物学图片中信息组成的SF-MDA扩展了Kress和van Leeuwen对视觉人工制品意义资源的功能解释。最后，介绍了对科学导师和非自然科学本科生的教学意义。口腔生物学图片中信息组成的SF-MDA扩展了Kress和van Leeuwen对视觉人工制品意义资源的功能解释。最后，介绍了对科学导师和非自然科学本科生的教学意义。