在数学中,我们常常需要根据研究对象性质的差异,分各种不同情况予以考察,这是一种重要数学思想方法和重要的解题策略,即分类讨论.引起分类讨论的因素较多,本文通过对典型例题的归纳分析,总结出中考中引发分类讨论的若干因素,以供探讨.一、由数学概念、 In mathematics, we often need to examine different situations according to the differences in the nature of research objects. This is an important mathematical thinking method and an important problem-solving strategy, that is, classified discussion. There are many factors that cause classification discussion. Through summarizing and analyzing typical examples, several factors have been summed up in the mid-term exams for discussion of classification.