從說話者的概念領域思考〔WA〕跟〔GA〕的選擇使用

The Usage of ''WA'' and ''GA'': from a Point of View of Conceptual Field

「Wa」和「Ga」的差異一直都是日語文法研究的一大題目。至今的很多研究可說已將兩者的使用意義等解釋的相當明確。本論試由說話者的使用選擇心理來考察「Wa」跟「Ga」的差異。試推論出「Wa」和「Ga」的使用選擇基準，並一同的對「Wa」跟「Ga」使用時生成的意義差異加以說明。從說話者的使用選擇基準之下，可得到「Wa」被選擇使用時說話者所想傳達的資訊是有對比的。而沒有對比的時候「Ga」將被選擇使用。

Up to now, There have been a lot of researches which focused on the differencial usage of ”WA” and ”GA”. It can be said that both of the usage of ”WA” and ”GA” and their meanings have been getting more clear. However, researches which approached this matter from the speaker's mentality have been very few, in spite of an importance of relation between language and mentality.Therefore, in this research, firstly focusing on the Speaker's sence of cognitive which related to the usage of ”WA” and ”GA”, then explored a selective standard of ”WA” and ”GA”. Finally, it was tried to clarify the meanings which generated by either ”WA” and ”GA”.As a result, It was clarified that ”WA” was selected when the comparison was conscious in the cognitive space of the speaker. ”GA” was selected when there was no consideration to the comparison in their space.