本文通过对课堂互动的阐述与对比研究,根据语言输入和输出理论,发现影响课堂参与的主要因素是学生焦虑心态,指出了教师策略在师生互动中的重要性。因此有效的教师策略可以解决英语课堂中师生互动的困难。 Based on the theory of language input and output, this article finds that the main factor that affects classroom participation is the student’s anxiety state, and points out the importance of teacher’s strategy in teacher-student interaction. Therefore, effective teacher strategy can solve the difficulty of interaction between teachers and students in English class.