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抛球门你的发球存在动作不协调的问题吗?抛球位置太靠后?你可以试试这种办法——在球场围网门口练发球。两脚一前一后站在门里面,前脚靠近门柱内侧的连接线。抛球要注意控制球在空中的线路,最理想的线路是:把球从门内抛起,让球在空中越过球场的围网落在门的外侧。如果球在下落过程中碰到围网或者从围网里面下落,说明你的抛球太靠后了;如果球能从围网的外侧下落(靠近围网但不能碰到围网),恭喜你——你的抛球线路刚刚好,位置合理的抛球是火炮发球的基础。
Throws Do you have a problem with your serve? Is it too far behind the throw? You can try it out - practice the serve at the court’s fence. Stand in front of both feet behind the door, the front foot close to the inside of the door column connection. Throw the ball to pay attention to control the ball in the air line, the best line is: throw the ball from the door, let the ball in the air over the course of the fence fell on the outside of the door. If the ball hits the fence or falls from the fence, it shows that your ball is too far behind. If the ball can fall from the outside of the fence (close to the fence but not into the fence), congratulations - Your throw line is just right, throwing the ball at a reasonable position is the basis of artillery serve.