Recently, technology for recording and loading of human motions has been attracted attention in various fields. For that purpose, motion-copying system was proposed. This system saves and reproduces human motions on the basis of position and force information. Conventional motion-copying system is not able to reproduce the saved motion to the environment when an unexpected force is applied to the system. To solve this problem, robust motion-copying system has been proposed. However, in applying this system to education field, it is important that the influence from an input of trainees to reproduced motion is varied. Therefore, this paper proposes a novel motion-copying system in which the effect from human input to reproduced motion toward the environment is variable. By the proposed method, it is possible to change the effect from the unexpected force by human to the reproduced motion to environment according to the learning level of trainees. Finally, the validity of the proposed method is confirmed by experiments.