本文讨论了工具书中对“算了”解释上的不充分现象,认为“算了”是一个语篇功能词项,有篇内衔接和篇外衔接,在语篇中主要起衔接作用。在语言教学上应根据功能原则、循序渐进原则和易化原则来进行教学。论文最后提出用语篇功能的观点来指导语篇功能词项的教学。 This paper discusses the inadequacies in the tool book’s interpretation of “forget ”, and holds that “forget ” is a functional term of discourse with intra-discourse convergence and inter-discourse convergence. In discourse, Cohesive effect. In language teaching should be based on functional principles, the principle of gradual and orderly to facilitate teaching. Finally, the thesis proposes to use the perspective of discourse function to guide the teaching of discourse function terms.