一引言语言教学包含许多可变因素,如教学内容、教学对象、教学法、教材设计、培养目标以及教学手段等,在教学实践中,这些因素可以随时调整。但是有两个方面的问题是不变的:一是语言 An introduction to language teaching contains many variables, such as teaching content, teaching objects, teaching methods, teaching material design, training objectives and teaching methods, etc., in teaching practice, these factors can be adjusted at any time. But there are two aspects of the problem is the same: one is the language