一、引言日本学校文法对日语词的分类，有其不尽合理之处，例如把感叹词和连接词认定为词，而不是辞；而且忽视了词类之间存在着连续性这一特点。在此试利用区别性特征理论对日语词类之间的对立（即差别）和连续性进行探讨。关于区别性特征理论，是由布拉格学派的雅各布逊等（J I. INTRODUCTION The classification of Japanese words in Japanese school grammar has its own unreasonableness. For example, the interjection and concatenation are regarded as words rather than words; and the continuity of word categories is neglected. In this paper, we try to use the distinctive feature theory to discuss the contradiction (ie, difference) and continuity between Japanese parts of speech. On the distinctive feature theory, by the Prague School of Jacobson et al