本文以国内研究生公共英语口语课堂实地录制的语料为基础,通过会话分析的实证研究方法,对教师会话修正进行了细致描述和分析。研究发现,从语言形式上来看,教师会话修正的阻碍源可分为四种,其中以词汇形式出现的阻碍源最多。文章最后建议教师应课前给出话题让学生准备。 This essay is based on the corpus which is recorded in the field of domestic public English for public English speaking students. Through the empirical research of conversational analysis, this paper describes and analyzes the corrections of teachers’ conversations in detail. The study found that from the perspective of language form, the barriers to the correction of teacher conversations can be divided into four types, of which the most impedimental sources appear in the form of words. The article finally suggested that teachers should give students a pre-class topic to prepare.