一般来说,教师为能够顺畅地完成预设,达到预期的教学目的、效果,往往害怕教学时出现“节外生枝”的情形,担心达不到预期的教学目的、效果。实际情况常常也正是如此。在教学动态、变化的过程中,学生的思考、回答一旦超出了预设,或答非所问,或离题跑偏,或意见分歧等,教师就表现得不知所措,要么置之不理,要么盲目否定,要么急于肯定,这就需要我们认真思考当“预设”遇上“生成”的问题。当学生答非所问时例如,一教师教学《狼和小羊》一课,在总结这则寓言时, In general, teachers are often scared of “extra-curricular” teaching in order to achieve the expected teaching purpose and effect smoothly, and are afraid to fail to achieve the intended teaching purpose and effect. The actual situation is often the case. In the process of teaching dynamics and change, when students think and answer once beyond the preconditions, or answer questions or deviate from opinions, or disagreements, the teachers are overwhelmed or ignored or blindly denied or anxious Certainly, this requires us to seriously consider the problem of “default ” encountering “generated ”. For example, a teacher teaching “Wolf and Lamb,” a lesson, summarizes this allegory,