These teachers often exchange and learn from each other, constantly improve their teaching and break through their own limitations. That is, keep close to the syllabus and exam instructions, constantly improve their teaching methods, focus accurately, pay attention to the essence, locate students, broaden their thinking, lead methods, pay attention to students' mistakes and difficulties, and improve students' review efficiency. In the classroom, through the way of autonomy, cooperation and inquiry, the interaction between teachers and students is promoted, the problem-solving ideas of students are inspired, and students are encouraged to take the stage to explain, which reflects the subjectivity of students' learning.