People play badminton often mention the term "fall", and often mention some title, such as: back, frontcourse, midway, sidewalk, etc. In fact, the fall is a flat concept that is unique to the flight trajectory of a ball. If a lead vertical is made from the hitting point to the dropout, there can be a flight trajectory of countless balls on this lead vertical, which means that the same settlement can be used to complete the same fall. The line is a concept of a space (and containing time), which is the only description of the flight trajectory of the ball. In the two sides of the play, if it is a post-standing ball, how to choose the route? When you have a slight active, you should lower the ball (flat high ball or flat ball), so that the flight time of the ball is shortened, further giving the opponent, thereby creating more active offensive opportunities; When the situation appears passive, the ball should be hit (high-far ball), which can increase the flight time of the ball, adjust your own position, to seek disadvantages, and enter the same running line. That is to say, the line change must not only be reflected in the length of the ball, and the change is changed, but also reflects the high and low changes in the ball, while the high and low changes determine the rhythm of the ball quickly, this can get more "stereo" effect. Killing the ball, there is also a line, (the method can be divided into a deduction, killing, killing and culling, etc.), from the horizontal direction, you can choose the left middle road and right pass; Highly problematic is unified by the longitudinal depth), you can choose to kill, deep kill, etc. The hanging ball should also be lecture, (the method can be divided into a hanging, intercepting hanging, etc.), the horizontal should not be dialanssed, from the longitudinal and height, you can choose low, straight, fast, but the front rush point is far away; You can also choose high and arc and dropped the network.
