Typological studies on universals and variations of Formosan languages

本研究以南岛语系台湾原住民所说的台语为研究对象，对台语及其相关语言如菲律宾语、印度尼西亚语的形态句法变异进行研究。特别是，我重点研究了他们的语音系统和作格能力，并观察到具有丰富的语音系统和强烈的作格倾向的语言与有限的语音和宾格特征的语言之间存在明显的对比。然而，尽管存在明显的对比，我还是证明了可以统一地解释声音磨损方面的变化。

In this typological studies of Formosan languages, spoken by aboriginal peoples of Taiwan which belong to Austronesian family, I conducted research on the morphosyntactic variations of these languages, as well as those in related languages such as Philippine languages and Indonesian languages. In particular, I focused my studies on their voice systems and ergativity, and observed that there was an apparent contrast between languages with a rich voice system called "Philippine-type" and strong ergative tendency and those with limited voice and accusative characteristics. In spite of the apparent contrast, however, I showed that it is possible to give a unified account of the variations in terms of voice attrition.