Abstract Hittite and Tocharian share an interrogative pronominal stem in m-next to the well known Proto-Indo-European interrogative *kʷi-, *kʷe-, *kʷo-. In Tocharian, the m-interrogative is especially frequent as a formative element in several interrogative, relative and indefinite stems. In this paper, these stems are investigated in detail, and it is argued that the Tocharian A interrogative stem ā-posited by Sieg, Siegling & Schulze in their Tocharische Grammatikis a ghost. Although the reconstruction of the m-interrogative for the oldest stage of Proto-Indo-European is beyond any doubt, it is difficult to use this Anatolian-Tocharian isogloss as an argument for the phylogenetic structure of the Indo-European family tree since in the other branches the m-interrogative may have been lost independently.

中文翻译：

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赫梯语和吐火罗语中的疑问词干

摘要 赫梯语和吐火罗语共享一个疑问代词词干 m-，紧挨着著名的原始印欧语疑问词 *kʷi-、*kʷe-、*kʷo-。在吐火罗语中，m-疑问词在几个疑问词干、关系词干和不定词干中作为构成元素特别频繁。本文对这些词干进行了详细的研究，并认为 Sieg、Siegling 和 Schulze 在他们的 Tocharische Grammatikis 中提出的 Tocharian A 疑问词干 ā 是一个幽灵。尽管重建原始印欧语系最古老阶段的 m-疑问句是毋庸置疑的，但很难用这种 Anatolian-Tocharian 等语词作为印欧系谱系系统发育结构的论据，因为在其他分支m-疑问句可能已经独立丢失。