课堂教学引入是教师在每节课的开始或在进行新课学习时,运用建立问题情境的方式,引起学生注意,激发学生学习兴趣,产生学习动机,并使学生明确学习目标的教学活动方式。一堂课的引入是课堂教学中一个重要环 The introduction of classroom teaching is a teaching activity that teachers use at the beginning of each lesson or during the new lesson to learn and use the way of setting up the problem situation to arouse the students ’attention, arouse students’ interest in learning, generate the motivation for learning and make the students learn the goal clearly. The introduction of a class is an important part of classroom teaching