课堂话轮转换能够反映课堂交际的流畅性、交际数量和交际风格等重要特征。本文对第二届“外教社杯”全国大学英语教学大赛的实况录像中的话轮转换、转换结构及策略进行统计和分析,发现参赛教师对交际量和学生参与比较重视,在比赛中尽量保持充分互动,在对话中完成教学。但在话轮权力分配、问题设计和交际意图等方面存在一定缺陷。研究结果将对大学英语教师提高课堂参与度,改善课堂交际提供实证依据。 The turn-taking of classes in the classroom can reflect the important features such as the fluency of class communication, the amount of communication and the style of communication. This article statistics and analyzes the turn-taking, conversion structure and tactics in the live video of the 2nd National Foreign Language Teaching Contest. It finds that participating teachers pay more attention to communication and student participation, Maintain full interaction and complete teaching in the dialogue. However, there are some shortcomings in terms of power distribution, problem design and communication intention. The results will provide evidence for college English teachers to improve classroom participation and improve classroom communication.