Re-introduction to Tibetan Case Structure and Its Grammatical Functions

Tibetan linguistics has a long history and has formed a relatively complete traditional grammar system, but there is no recognized and relatively complete modern formal grammar framework of Tibetan. In order to inherit, expand, extend and deepen the traditional Tibetan grammar and its formal requirements, this paper makes comparative study on Fillmore case grammar with traditional Tibetan grammar, and introduces a new Tibetan grammatical unit called case structure, and demonstrates that the case structure plays an important role in Tibetan syntactic and semantic analysis. Different case structures of the same verb form Tibetan sentences, and one Tibetan sentence can be uniquely decomposed into one or more case structures. Case structure not only carries the syntactic structure of the sentence, but also reflects the semantic components of the sentence. Therefore, under this grammatical framework, Tibetan syntactic and semantic analysis can be studied in an integrated way. This opinion has some certain theoretical significance for Tibetan grammar research and Tibetan natural language processing.