| Summary: | 碩士 === 國立政治大學 === 日本語文學系碩士班 === 96 === The purpose of this thesis is to investigate the semantic extension from Ko, So, and A, traditionally called demonstratives, to vague Ko, So, and A in terms of their demonstrative functions, as well as the continuity of the expansion. In this paper, according to whether they can function as demonstratives, Ko, So, and A are categorized into 2 types: Ko, So, and A with demonstrative functions, Ko, So, and A with vague demonstrative functions. The differences among various types of semantic extension of demonstratives are clarified by analyzing the functions of conjunctions with Ko, So, and A and interjections with Ko, So, and A from the perspective of cognitive linguistics.
This paper consists of 6 chapters. The first chapter is Introduction, In Chapter 2, ‘Preceding literature---concerning the Ko, So, and A with demonstrative functions’, I review the conventional researches on demonstratives and present the remaining problems. In Chapter 3, ‘The basic meaning of Ko, So, and A,’ based on the conclusion of Chapter 2, I discuss the basic meaning and expanding meaning of ‘the Ko, So, and A with demonstrative functions’ from the perspective of metaphor from space to time. In Chapter 4, ‘Semantic Extension from Demonstratives to Conjunctions’, .I analyze the change from demonstrative function to conjunctive function from the viewpoint of grammaticalization resulting from bleaching. In Chapter 5, ‘Semantic Extension from Demonstratives to Interjections’, I explain the function and semantic extension of interjections with Ko, So, and A from the viewpoint of grammaticalizaiton resulting from abstraction. And, finally, Chapter 6 is the conclusion of this paper.
Traditional researches on the so-called Ko, So, and A are focused on a unified (or general) explanation of the differences between their deictic and anaphoric usages. This paper, however, considers that the coherence reaches not only those Ko, So, and A which function as demonstratives, but even those Ko, So, and A which do not have this function. For instance, conjunctions with Ko, So, and A stem from the bleaching of Ko, So, and A’s demonstrative functions, and interjections with Ko, So, and A are the results of abstraction from Ko, So, and A’s demonstrative functions. Even though each type differs from the others in terms of their semantic extension, it is clear that semantic extension is connected with those Ko, So, and A which can act as demonstratives.
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