古漢語音節結構及其音節內部結構，在漢語語言學中並非完全論定的問題，研究者們普遍認為，上古漢語音節作為一個單位，包括至少以下四個部分：聲母、介音、主要元音和韻尾，此外還有聲調。然而，這些部分之間的層次關係仍然不清楚。本文探討了介音在上古漢語音節結構中的地位。這是音節結構一個重要的問題之一。使本文與該主題的其他研究不同的是，本文所檢驗的所有語料都來自王力的《同源字典》——中國語言學家王力收集的大量同源詞的一部字典。同源字是上古漢語中的一種現象，指的是一組意義和發音相近的單音節詞語。同源字可以為我們提供有關古漢語音節結構的重要資訊，因為它們之間存在著音韻聯繫：同源字的發音相近，但不相同，它們之間的區別並不是隨機過程的結果。這種區別遵循著一定的規則，而且直接與音節結構有關。同源字發音的輕微變化可能是部分重複的結果。我們在部分重複這個現象的基礎上能夠深入研究上古漢語音節的內部結構和介音的地位。部分重複的現象曾被語言學家包智明用來描寫現代漢語、各種漢語方言和中古漢語的音節內部結構。在本文中，筆者將應用包智明分析音節的方法來研究《同源字典》中的同源字，以探索音節的層次結構與介音在其中的地位。介音在同源字音節中所呈現的現象，顯示其搭配其他音節成分有很大的自由。筆者分析《同源字典》中的同源字，研究出五種類型的介音現象。

What is an Old Chinese syllable structure and whether the syllable in Old Chinese has internal structure are settled questions in Chinese linguistics. It appears to be the consensus among researchers that the syllable as a unit consists of at least four segments: the initial, the medial glide, the vowel, and the final segment, plus tone. What is the hierarchy between these segments is still not clear. In this paper the author examines hierarchical structure of syllable in Old Chinese and particularly – the status of a medial glide in it. What makes this paper different from other research on this topic, is that all the data examined in this paper is taken from Wang Li’s “Dictionary of cognate words” (“Tongyuan zidian”) – a dictionary in which a linguist Wang Li collected a great number of so-called cognate words. Cognate words can give us important information about the syllable structure in Old Chinese because of the phonological connection between them: the pronunciation of cognate words is close, but not the same, and the difference between them is not a result of a random process. This difference subjects to certain rules, moreover, is directly related to the structure of the syllable. A slight change in the pronunciation of cognate words might be a result of a partial reduplication – it is a process that targets sub-syllabic constituents, therefore we are able to look into the internal structure of the syllable in Old Chinese. The phenomenon of partial reduplication was used by a linguist Bao Zhiming to reveal the inner structure of the syllable in modern Mandarin, various dialects of Chinese, and Classic Chinese. In this paper I am applying Bao Zhiming’s method of analyzing the syllable to cognate words from the “Dictionary of cognate words” to explore the place of medial glide in the hierarchical structure of the syllable. The medial glide appears to have very different behavior throughout cognate words. The author identifies 5 types of glide behavior in cognate words from the dictionary.

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二、單篇論文（依作者姓氏筆劃排列）
于昕，〈從《說文解字約注》中的同源字窺測上古複輔音聲母〉，《先秦兩漢學術》，2009年，12月，065–083。
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＿＿＿＿＿. Syllabic Constituency and Sub-Syllabic Processes. Journal of East Asian Linguistics, 2000, 9(3), 287–313.
Hsu, Dong Bo. The syllable in Old Chinese: sub-syllabic processes, syllable structure, and the status of medial glides. Journal of East Asian Linguistics, 2009, 18(4), 361–395.
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