体育教师在教学中通过有声的语言,作出指示,发布号令,为什么还要借助于吹哨子的手段,变换传递信息的方式呢?显然,这是因为哨子本身具有非口头语言所能表达的语言功能,正确使用好哨子可以提高体育教学效率,促进 Physical education teachers in teaching through the voiced language to make instructions, issue orders, why it is also by means of blowing whistles, change the way to pass information? Obviously, this is because the whistle itself has a non-verbal language can express language functions The correct use of good whistle can improve the efficiency of physical education and promote