Abstract Focusing on the three-pattern accentual systems in Uechi, a dialect of the Miyako archipelago, this paper argues that the prosodic category PWd plays a pivotal role, in addition to the mora, as basic prosodic unit required to calculate accent placement. The paper also shows that prosodic conditions that bring about neutralizations of tonal patterns in Uechi can be fully accounted for by making use of PWd, in addition to postulating that the PWds consist of recursive structures. It then reports, focusing on the dialect of Tarama island in the same Miyako archipelago, a representative case of tonal alternations occurring at the sentence level, in which the odd numbered (1st, 3rd, etc.) accents in a sentence change High tone to Low tone, while the even numbered (2nd, 4th, etc.) change Low tone to High tone. The discovery of such unique types of pitch realization in the prosodic systems in this area should make an important contribution to typological studies of prosodic systems of Japanese, as well as of other languages.

中文翻译：

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宫古琉球的韵律单元，递归结构和重音性质

摘要针对宫古群岛的一种语言上内地的三模式重音系统，本文认为韵律范畴PWd除了是摩拉之外，还是计算重音位置所需的基本韵律单元。该论文还表明，除了假定PWds由递归结构组成之外，通过使用PWd可以完全解决在植株中引起音调模式中和的韵律条件。然后，报告集中于同一宫古群岛的塔拉玛岛的方言，报告了在句子级别发生音调交替的典型案例，其中句子中奇数（第1、3等）的重音变化为低调，而偶数（第二，第四等）将低调更改为高调。