一、引言一堂课能否引人入胜,关键在于导入的设置。导入是学生对这堂课的第一印象。根据美国心理学家阿希的研究:第一印象的作用最强,持续的时间也长,比以后得到的信息对事物整体印象产生的作用更强。人们对于事物的整个印象,一般是以第一印象为中心形成的。 I. INTRODUCTION Whether or not a class can attract people is the key to the introduction of settings. The introduction is the student’s first impression of this class. According to the American psychologist Axi’s research, the first impression has the strongest effect and lasts for a long time, which is more powerful than the information obtained later on the overall impression of things. People’s overall impression of things is generally formed with the first impression as the center.