本文通过观察北京语言大学莫丹老师主讲的“把”字句教学示范课,记录该次课的课堂互动情况,来分析促进课堂互动的方式。通过观察结果可以知道有效的课堂互动对学生更好地在课上掌握所学的语法知识非常重要,也便于老师了解学生的掌握程度。 This article analyzes the ways to promote the interaction of the classroom by observing the demonstration of “Ba” sentence taught by Teacher Modan of Beijing Language and Culture University and recording the classroom interaction in the lesson. Through the observation, we can know that effective classroom interaction is very important for students to better grasp the grammar knowledge they have learned in class and also helps teachers to understand the mastery of students.