一、前言课堂教学过程应该是由导入、呈现、理解、巩固和小结这五个教学环节构成的环环相扣,缺一不可的完整的系统。导入是课堂教学中的重要环节,是承上启下、温故知新的必然途径。在课堂教学中自然、新颖、富有趣味的导入,最能吸引学生的注意力。导入得法,能使课堂气氛变得轻松活泼,在 I. Preface The classroom teaching process should be a complete system of interlocking, importing, presenting, understanding, consolidating, and summarizing these five teaching processes. Import is an important part of classroom teaching, and it is an inevitable way of linking up with others and reviving knowledge. The natural, novel and interesting introduction in class teaching can attract the students’ attention. The introduction of this method will make the classroom atmosphere relaxed and lively.