众所周知，我们在教学中经常发现，学生在回答问题、表达解题思路、概括法则定义时，不是词不达意，就是叙述不完整。这说明我们在教学时只注重了结果，而忽略了解题过程。另一方面，还缺乏对学生语言表达能力的训练，致使学生的表达成为思维的障碍，影响了他们思维的发展。所 As we all know, we often find in teaching, students in answering questions, expressing problem-solving ideas, the definition of general rules, not the word is not satisfactory, that is, the narrative is not complete. This shows that we only pay attention to the results of teaching, while ignoring the problem-solving process. On the other hand, there is a lack of training of students 'language skills, which makes students' expression an obstacle to thinking and affects the development of their thinking. The