在对普通教育领域学科教学知识要素分析的基础上，本文指出对学科教学知识分析时，要区分学科教学知识的要素和影响因素。文章区分并细化了外语教师学科教学知识要素和影响因素的具体内容。不论是作为要素的教师知识，还是作为影响因素的知识，都是作为教师知识的整体而起作用，只有整合各类教师知识，才有助于理解教学的复杂性。

Based on the analysis of pedagogical content knowledge in the field of general education， the present article argues that we need to distinguish pedagogical content knowledge's components and influencing factors． Furthermore， the article explores the components and influencing factors of foreign languages teacher's pedagogical content knowledge． In practice， all the components of teacher knowledge integrate together． All kinds of teacher knowledge need to be integrated to facilitate the understanding of teaching complexity．