预设与生成,是教学活动必备的两大环节,也是教师授课智慧的凸显。教学预设是否具有科学性和逻辑性,往往决定了一节课的成败。然而,从实践层面来看,教师上课面对的是一群兴趣广泛、思维活跃、可塑性很强的孩子,教学过程的流动性、突变性、差异性和不确定性,决定了许多细节性的东西是随机生成的。基于这样的认识,教师在关注教学活动中的“预设”的同时,更应关注处于动态状态下的“生成”。教学鲁迅先生的小说《孔乙 Presets and generation, is an essential teaching activities of the two major links, but also highlight the wisdom of teaching lectures. The presupposition of teaching is scientific and logical, which often determines the success or failure of a lesson. However, from a practical point of view, teachers face a group of children with a wide range of interests, active thinking and plasticity. The fluidity, mutation, difference and uncertainty of the teaching process determine many details Is randomly generated. Based on this understanding, teachers should pay more attention to “Generate ” which is in a dynamic state while paying attention to “Preset” in teaching activities. Teaching Lu Xun’s novel "hole B