一个班级由于每个学生的知识水平、个性素质、学习态度和学习方法等多种原因,因而出现良莠不齐的现象,便形成了“好、中、差”三类学生,“后进生”与“先进生”是相对而言的,事物是可以转化的,但后进生的转化是一项长期而复杂的工程,需要付出巨大的努力。 Because of the variety of reasons, such as the level of knowledge, individuality, learning attitude, and learning methods of a student, a class has emerged as a phenomenon of good and bad, resulting in three types of students: “good, middle, poor,” and “advanced students.” “With advanced students” is relative, things can be transformed, but the transformation of later students is a long-term and complex project, which requires a great deal of effort.