预习作业的设计充分体现了教师对学情的分析与掌控,也凸显了教师对教学思路的把握,更促使学生有效地调控学习的方向。预习作业的评价则更好地反馈预习的质态,有利于教师较为准确地把握学生对教材的理解程度以及认识的原点,及时调整教学预设、改变教学策略,更加有效合理地组织教学。因此, The design of pre-assignment homework fully reflects the analysis and control of teachers ’learning conditions. It also highlights the teachers’ grasp of teaching ideas and urges students to effectively regulate their learning direction. The pre-assignment evaluation feedbacks the quality of the preview better, which helps teachers to grasp the students’ understanding of the textbooks more accurately and the origin of the knowledge, adjust the teaching preconditions in time, change the teaching strategies and organize the teaching more effectively and reasonably. therefore,