1, there are not enough details in class. 2. Students lack motivation. 3. The whole class atmosphere is not very active, and the students' excitement is not high.

To improve the quality of teaching, it is necessary to strengthen the consciousness of teaching center, standardize the teaching management in all aspects of teaching activities and give full play to the potential of teachers. Lesson preparation should be "deep", that is, in-depth study of curriculum standards, in-depth excavation of teaching materials, in-depth understanding of students, in-depth discussion of teaching methods. To be "practical" in class means to have well-prepared classes and teach students in accordance with their aptitude.