This dissertation is about the exceptional negative sentence pattern of “먹어 못 내다” which is used in Chinese Chosun language. This kind of negative sentence has the structure in which a negative adverb intervenes between a main verb and a assistant verb. This paper concerns what does this specific form of negative sentence originate in, and examines it in diachronical way and from dialectological angle. At the same time, we look over if it is related to the ‘Potential-Marking Complements’ construction in Chinese. In conclusion, we can say the negative sentence of “먹어 못 내다” originates in the dialect of Northern part of Hamgeoungbukdo, but as far as the distinct characteristics in the meaning and high productivity of this pattern are concerned, we conclude that sentence has the structure in which a negative adverb intervenes between a main verb and a assistant verb. this specific pattern is produced inside of Chinese Chosun language itself under the influence of Chinese ‘Potential-Marking Complements’. (Seoul National University)