Can anyone explain the rules of tennis? In particular, the rules of the serve and what does the S ba

1.Pre-tee rules. The server should stand in the area behind the end line, between the midpoint and the putative extension of the sideline, toss the ball in any direction in the air with his hand, and hits the ball with a racket before the ball touches the ground (players who can only use one hand can throw the ball with a racket).

When the racket makes contact with the ball, the ball is sent.

2.Rules on the serve. The server is not allowed to change the position of the original position by walking or running during the entire service action, and the two feet are only allowed to stand in the specified position, and must not touch the matching and other areas.

3.The position of the server. (1) At the beginning of each game, the serve should be served from the end line of the right area, and after scoring or losing one point, the ball should be changed to the left area.

2) The ball sent should be crossed over the net and landed on the opposite corner of the opponent's teeing area, or on the line around it4Error on serve. Missed ball; The ball is sold in concealment, touching a fixed object before hitting the ground (except for the net, center belt and white cloth on the edge of the net); Violation of the service position rules.

After the first service error of the server, the second serve should be made in the original position.

5.The serve is invalid. After the serve touches the net, it still falls into the opponent's service area, and the receiver is not ready to receive the ball; Both should be re-served.

6.Exchange serves. At the end of the first game, the receiver becomes the serving player and the serve becomes the catch. After that, each round ends. They are all exchanged with each other in turn until the end of the game.

Effective Serve An effective serve means that the player stands in the area behind the end line, between the midpoint and the sideline (in singles matches) and hits the tossed ball diagonally to the opponent's teeing area diagonally opposite with his upper hand or lower hand.

The position of the serving player.

The position of the serving player starts from behind the end line of the right zone first, and then switches to the left zone after scoring (losing) a point. Repeat in turn to ensure that the sum of the scores is served in the right area when the double Zen spring is marked, and the left area is served in the odd number.

Double service error Each point of service has two service opportunities, when the first service error, you can also make a second serve, He He such as the second service error, that is, double fault, even if one point is lost.

Serve to wipe the net Serve to wipe the net, if it still falls within the service area, the serve will be re-served; If it lands outside the tee area or does not cross the net, it is counted as a mistake.

The order of the serve.

The order of serving is as follows: each player who participates in Moriyu serves one game and rotates in turn.

Tennis serve to throw the ball up, when serving, the ball has to pass through their own court and fall in the singles line of the opponent's balance pants search court, and it is not allowed to touch the net, if it is out of range or not sent to the opponent's court pure penetration and touch the net, etc., there is a second chance to serve, the second time, it is a double error, to give the opponent points.

Ace ball, the term for the sport of tennis. uRefers to the ball sent by the serving side that lands in the opponent's area of forcebHowever, the opponent's racket fails to touch the ball, thus scoring a direct serve. InIn professional tennis, because there is a second chance after the first service miss, players dare to risk a higher mistake in the first serve by sending high-speed flat shots and sidespin balls to the inside and outside corners of the service area.

Ace ball. An ace is a serve in which one of the two sides of the game serves, and the ball lands in the effective area, but the opponent does not touch the ball to make it score directly.

S ball refers to the ace ball, the ace ball requires a combination of speed, landing point and tactics, and it also largely depends on the ability of the receiver to receive the ball, so it is possible to meet but not seek, and it is often seen that some famous athletes promise to donate a certain amount of money for each ace ball in a major game, which is also a combination of the charm of the competition and the humanistic spirit. Generally, aces are decided by the referee on the field. It has entered a plateau period, if you want to pay attention to sports, it is recommended to watch the movements of 899 and add some card mothers.