对于什么是示范动作,自然不必多言;为什么要作示范动作,也不必大费口舌,但做老师的,或多或少、或前或后总要给学生作些示范动作。比如体育老师,在给学生上体育课时,就得作示范动作,恐怕简单到“一二一”也免不了;再如美术老师,他的示范动作就是范画,有的可能是在课前准备,有的可能需要当面示范,有时是一张完整的画,有时是一些“零部件”; It is not necessary to say much about what is a demonstration action; why not make demonstrations? There is no need to pay too much attention to it. However, as teachers, more or less, or before or after, always give students some demonstration actions. For example, physical education teachers must give demonstration exercises when they give students physical education classes. I am afraid that it will be indispensable to be “12:1.” For example, as an art teacher, his demonstration actions are standard paintings, and some may be prepared before class. Some may need face to face demonstrations, sometimes a complete picture, sometimes some “parts”;