A Study on the Dynamic State of Japanese During the Meiji and Taisho Periods from the Perspective of Transitions in Conditional Expressions

本文描述了江户时代以来的过渡导致了目前在龟形/大阪方言和江户/东京方言中条件表达式的使用，并探讨了这些过渡背后的基本规律。从江户时代开始，在日语中，从属从句作为连词的作用变得比以前更加重要。此外，在龟形/大阪方言中出现了特定连词密集使用的趋势，在江户/东京方言中也出现了几个连词使用的趋势。为了更好地理解日语语法史，条件表达式的转换需要考察龟形/大阪方言和江户/东京方言是如何相互影响的。

This paper describes the transitions from the Edo period onward that led to the current usage of conditional expressions in the Kamigata/Osaka dialect and the Edo/Tokyo dialect, and considers the fundamental rule underlying the transitions. From the Edo period onward in the Japanese language, a subordinate clause has become more important as a function of conjunctive particle than previously. Furthermore, a trend can be seen whereby specific conjunctive particle is used intensively in the Kamigata/Osaka dialect, and several conjunctive particles are used in the Edo/Tokyo dialect. The transitions in conditional expressions require an examination of how the Kamigata/Osaka dialect and the Edo/Tokyo dialect have influenced each other, for a better understand of the history of Japanese grammar.