Resource Pool 资源库课程
《continuous tense》 Key Speaker：Ma Ke
《进行态》主讲人：马科
Course Syllabus 课程章节
1This lesson mainly studies the positive, negative and question forms of the action progression, and the difference between continuous tense expressions
本节课主要学习动作进行态的肯定、否定、疑问形态，在、正、正在的语法差异等。
General Courses 通用课程
