This paper discusses the roles of task-based language teaching in college English teaching from the perspective of the definition, types, didactics, application as well as some existing problems that should be explored in its further study.

• 本文从任务的内涵，任务的类型，任务教学法的理论依据及其在大学英语教学中的运用及存在的问题等方面探讨了任务教学法在大学英语教学中的作用。