Interaction between teachers and students can be encouraged in class. According to the needs of different classes, design different incentive mechanisms to mobilize children's enthusiasm. No matter whether the child answers correctly or not, he should give some affirmation and encouragement. Encouragement will make children want to speak and dare to speak. Only by letting children dare to speak and want to speak first can we gradually help children speak correctly. Teachers' affirmation of students in class is very important, which is the basis of establishing a good relationship between teachers and students.