在高三物理综合复习阶段,教师常常用一些典型题目,对学生进行一题多解、一题多问、一题多变的训练.这对学生跳出题海,系统掌握物理基础知识,达到融会贯通、触类旁通的目的,无疑是很重要的方法.如若再把看似不同的题目,进行分析,揭示出共同的本质特征,然后再加以归类,那么对学生精练物理知识,减少盲目、重复做题,就更加有效了.笔者在一堂高三复习课中曾引入了这样三道题. During the senior physical review stage of the third year, teachers often use some typical topics to perform multiple-question, one-question, and multiple-question trainings on the students. This jumps students out of the question and systematically acquires basic knowledge of physics and achieves comprehensive understanding. The purpose of comprehension by analogy is undoubtedly an important method. If you look at different topics and perform analysis to reveal the common essential features and then classify them, then you can refine the physics knowledge and reduce blind and repeated questions. It was even more effective. The author had introduced three such questions in a Senior 3 review class.