异步教学法是一种能体现学生的学习过程、学生在教师指导下进行自主学习的现代教学模式。异步教学法的有效性体现在:学情调查是教学的基础;发挥学生学习的自主性和积极性;发挥学生的集体智慧和整体学习效应;训练和问题贯穿教学过程的始终。教学中应注意的问题:必须做好学情调查;注重方法引导;注重总结和反思。 Asynchronous teaching method is a kind of modern teaching mode that can reflect the learning process of students and students study independently under the guidance of teachers. The effectiveness of asynchronous teaching method is reflected in the following aspects: the investigation of learning situation is the basis of teaching; the autonomy and enthusiasm of students’ learning are exerted; the collective wisdom of the students and the overall learning effect are exerted; the training and problems run through the teaching process. Teaching should pay attention to the problem: we must do a good job survey; pay attention to the method to guide; pay attention to the summary and reflection.