作业讲评，是批改作业的继续，是教师根据练习反馈的信息重新设计和组织教学的过程，是学生完善知识，培养能力，认识深化的过程，是提高教学质量不可忽视的重要一环。特点之一是针对性。讲评的素材是老师批改作业时亲自记录并通过分析而来的具本实例，能起到有的放矢，因势利? The job evaluation is the continuation of the correction work. It is the process that the teacher redesigns and organizes the teaching according to the information given by the practice. It is the process that students improve their knowledge, cultivate their abilities, and deepen their understanding. It is an important part of improving the quality of teaching. One of the features is targeted. The commentary material is the example that the teacher recorded and analysed in person when correcting assignments. It can be used as a target, because of the snobbery.