This article deals with English tag questions demanding knowledge or action. Conversationally, these are rather recognizable functions in that they project specific expected responses and involve linguistically construed interactional roles. We focus on these tag questions to compare two analytical models developed within Systemic-Functional linguistics: the speech function model (Halliday & Matthiessen 2004) and the exchange structure analysis (Berry 1981a, 1981b, 1981c, 2016). In this comparison, we address the following questions. Which conversational properties and form-function correlations do the models focus on? What aspects of their functioning in discourse do they reveal? Ultimately our detailed corpus-driven analysis of tag questions which incorporates grammatical, prosodic and semantic factors suggests that both approaches have their strengths and weaknesses. We argue for a synthesis between both approaches and conclude that further development of the principles of adjacency and exchange shows potential for greater understanding of formfunction relations in grammatical constructions such as tag questions.

中文翻译：

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引出知识或行动的英语标签问题

本文涉及需要知识或行动的英语标签问题。在会话中，这些是相当可识别的功能，因为它们投射特定的预期反应并涉及语言解释的交互角色。我们专注于这些标签问题来比较系统功能语言学中开发的两种分析模型：语音功能模型（Halliday & Matthiessen 2004）和交换结构分析（Berry 1981a, 1981b, 1981c, 2016）。在这个比较中，我们解决以下问题。模型关注哪些对话属性和形式函数相关性？它们揭示了它们在话语中发挥作用的哪些方面？最终，我们对标签问题进行了详细的语料库驱动分析，其中包含语法、韵律和语义因素表明这两种方法都有其优点和缺点。我们主张对两种方法进行综合，并得出结论，邻接和交换原则的进一步发展显示出对语法结构（如标签问题）中形式功能关系的更好理解的潜力。