（一）近几年来，很多网球爱好者向本人投诉：打了这么多年球都无法进步，而某些关节却已经受伤。其实这很大程度上是因为他们过分模仿职业球手的动作和习惯，特别在姿势和握拍方面。其次，不愿意提早拉拍，由于像桑普拉斯、卡费尔尼科夫等球星的拉拍动作是提了拍后，在一... (A) In recent years, many tennis fans complained to me: playing for so many years can not improve the ball, but some joints have been injured. In fact, this is largely because they over-imitate professional players’ movements and habits, especially in terms of posture and grip. Second, do not want to pre-pat, due to players such as Sampras, Kafarnikov and other players is the racket action took after the shoot, in a ...