As to dead object , these reasons may be the strength of the nature , and to living object , including such contents as external strength and one ' s own muscle movement , etc . , however , the more important thing is that should embody inherent will , mood , instinct , etc . through the role of the activity , certainly still include the environment ( it has spirit this environment is not only natural ) 对于无生命的物体而言，这些原因可能是自然界的力，而对于有生命的物体来说，包括外部力量和自身肌肉运动等内容，不过，更重要的是要通过活动着的角色体现出内在的意志、情绪、本能等等，当然还包括环境（这个环境不只是自然的还有精神的） 。
