无论在高一、高二平时教学中还是高三高考多轮复习中,讲评习题是课堂教学的一个重要环节.有时新授课没有顾及到的知识或难点未突破的地方通过讲评习题加以弥补,有些重点知识通过讲评习题加以强化和凸现,有些知识内在联系没有处理好,通过讲评习题“一桥飞架南北,综合灵活应用成通途”. No matter in high school or high school teaching, or high school entrance examination for many rounds of reviewing, commenting exercises is an important part of classroom teaching.Of course, new lectures did not take into account the knowledge or difficulty not break through the comment exercises to make up for some of the key knowledge By stressing exercises to be strengthened and highlights, some of the inner links of knowledge are not handled well, by commenting exercises “a bridge fly north and south, comprehensive and flexible application of thoroughfare.”