Abstract
This paper analyzes the result of an investigation of the solutions to differential problems by Chinese learners of Japanese. The investigation is constituted by Japanese questions and differential problems. The rate of correct answers show that the students have difficulties in solving the problems which are written in Japanese. As the result of an analysis on Japanese expressions used in solutions of differential problems by Japanese-low groups and Japanese-high groups, it is clear that the Japanese-low group use only "noun WA noun" structure and some basic conjunctions and that it is difficult for both groups to use expressions of naming and replacement in Japanese without model descriptions.
