“转轴拨弦三两声，此时无声胜有声”。这是唐代诗人白居易描述音乐无声间歇期的奇妙之功。其实相对于有声语言来说，体态情感所表达的“无声语言”即非言语行为在教育教学过程中，如果运用得当，常能收到“无曲有声”之效。那么，非言语行为有哪些作用？又如何有效地使用呢？ “Pivoting thirty-two shaft, at this time there is no sound wins.” This is the wonderful work of the Tang Dynasty poet Bai Juyi in describing the silent period of music. In fact, relative to the vocal language, the “silent language” expressed by the body's emotion, that is, non-verbal acts can often receive the “no-sounding” effect when used properly in education and teaching. So what are the roles of nonverbal behavior? How to use it effectively?