Abstract Good listening comprehension contributes greatly to academic performance. One factor in developing good listening comprehension is knowing the functions of lexical bundles. While some research has been done on lexical bundles, their functions in academic lectures have not been extensively investigated. Drawing on an 8.8-million-word corpus of academic lectures across four disciplines, we investigated the functions of high-frequency lexical bundles in academic lectures and examined the similarities and differences in the four disciplines. We discovered that lexical bundles most often perform referential and stance functions in academic lectures, although their function as discourse organizers is also important. Given these and other functions of high-frequency lexical bundles, instruction targeting functions can contribute to improving core listening skills, such as listening for details and listening and predicting, and overall comprehension of lectures. Apart from important functions, we also found variations and similarities in the use of lexical bundles across disciplines, suggesting that these should be taken into account in bundle instruction to help students become more proficient in lecture comprehension.

中文翻译：

---

分析词汇束在本科学术讲座教学中的作用

摘要 良好的听力理解对学习成绩有很大贡献。培养良好听力理解的一个因素是了解词汇束的功能。虽然已经对词汇束进行了一些研究，但它们在学术讲座中的功能尚未得到广泛研究。我们利用跨越四个学科的 880 万字的学术讲座语料，研究了学术讲座中高频词汇束的功能，并检查了四个学科的异同。我们发现词汇束在学术讲座中最常发挥参考和立场功能，尽管它们作为话语组织者的功能也很重要。鉴于高频词组的这些和其他功能，指令定向功能有助于提高核心听力技能，例如听细节、听和预测，以及对讲座的整体理解。除了重要的功能外，我们还发现了跨学科词汇束使用的变化和相似之处，这表明在束教学中应该考虑到这些，以帮助学生更熟练地理解讲座。