王指导信箱吉林东北师大读者李久全问：反削怎打手球么？北京海淀区读者闫文龙问：发球时，球抛不准是初学者最常见的问题。球抛不准就影响挥拍动作的连贯性，影响发球的力量和准确性、球抛不准最常见的错误或原因有以下三种，我简要地和你谈谈。一、手执球的手法不恰当。... Wang Guilin Jilin Northeast Normal University reader Li Jiuqun asked: anti-cut how to play handball it? Yan Wenlong, a reader in Haidian District, Beijing Q: When teeing off a ball, the ball is not allowed to be the most common problem for beginners. The impact of the ball throwing on the consistency of swing action, affecting the power and accuracy of service, the ball is not allowed to throw the most common mistakes or for the following three reasons, I briefly talk to you. First, the hands of the ball is not appropriate. ...