在学习“轴对称”时,总有不少同学解题时常出现错误,李老师根据课堂教学实录列举几例并进行诊断分析,希望对同学们的学习有所帮助. In learning “Axis symmetry,” there are always a number of students who often have problems in solving problems. Teacher Li enumerates several cases and conducts diagnostic analysis according to the classroom teaching records. He hopes to help the students in their studies.