本文主要对常州方言句末语气词的用法作了详细的描写和分析。在此基础上,本文还借鉴西方的情态和语气理论,重新审视了语气的本质问题,认为语气是交际双方互动过程中的一种心理过程,而语气词是这种心理活动外化的标记。 This article mainly describes and analyzes the usage of the modal particles at the end of Changzhou dialect. On this basis, this dissertation also draws lessons from western modality and tone theory to re-examine the essence of tone, and regards tone as a psychological process in the interaction between two parties, while tone is the mark of such externalization.