物理是一门自然科学,相对来说是学生比较难以掌握的科目.而且物理在高考中,既是容易得高分的学科,也是一门分数经常拉开差距的学科.因此,合理的讲解物理例题,是帮助学生掌握物理知识的有效途径.例题讲解一般有三个层次.第一个层次,能够让学生了解知道正确答案.第二个层次,能够通过评讲,让学生知道本道题考察了哪些知识点,能力点.第三个层次,能够通过评讲,让学生拿到题目后,站在出题人的角度了解本题可以考察学生的什么能力,哪些地方存在得 Physics is a natural science, is relatively difficult for students to master the subject.And physical in college entrance examination, both easy to get high scores of subjects, but also a fraction of the gap often open the subject.Therefore, a reasonable explanation of the physical example , Is an effective way to help students master the knowledge of physics.Examples to explain generally there are three levels.First level, to enable students to know the correct answer.The second level, by commenting, let students know what knowledge Point, ability point. The third level, through the comment, so that students get the title, the perspective of the question from the point of view of this question can examine the ability of students, what places exist