1 is to show students what they have learned. The basic content and application of these knowledge points will not be very detailed, only the key points and difficulties. Because of the lack of time, I finished all my knowledge for three years in less than two months.

2. Let students know which knowledge points they have blurred or found which knowledge points they don't understand and can't use, so as to play a role in checking and filling gaps. After class, students should use their own methods to fill in the loopholes found and fill in the loopholes themselves.

Knowing the purpose, what students need to do is:

1. Review yourself in advance, attend classes with questions, attend classes with a purpose, attend classes when you don't understand, and actively ask questions to improve the efficiency of leak detection and vacancy filling.

2. If you don't review in advance, listen attentively in class, learn literacy by yourself and record it, do your own research after class, find a teacher to solve it in the remedial class, actively check for missing parts and catch up with the teacher's progress.