通过对几节常态课的评析,挖掘出影响课堂教学效益的几个因素,而这些因素又恰恰是教师所忽略的,通过正反案例的对比,指出好的教学策略可以规避一些低效行为。 Through the analysis of several regular classes, we can find out several factors that affect the efficiency of classroom teaching. These factors are just ignored by teachers. By comparing the positive and negative cases, it is pointed out that good teaching strategies can avoid some inefficient behaviors.