唯物辩证法告诉我们:事物发展的根本原因,不在事物的外部,而在事物的内部;外因是条件,内因是依据,外因必须通过内因才能起作用。以这个观点指导我们的教学实践,就要求我们教师必须十分注意激发学生的学习兴趣,调动学生的学习积极性.充分发挥他们在教学过程中的主体作用。 Materialist dialectics tells us that the fundamental reason for the development of things is not in the outside of things but in the interior of things; external factors are the conditions, internal factors are the basis, and external factors must work through internal factors. To guide our teaching practice with this point of view requires that our teachers must pay great attention to arouse students’ interest in learning, mobilize their enthusiasm for learning, and give full play to their main role in the teaching process.