Thank you very much for your suggestions.
I urgently need your help to check these statements on tennis.
1) The most important tennis shoots are forehand and backhand. These shoots are very important because when the ball bounces you must hit the ball with these two shoots (you can play a backhand or a forehand stroke).
2) Another important shoot is the volley. The volley involves hitting the ball before it bounces. Finally, another important shoot is the service. You can do two types of services (you can serve in two ways?): a kick service or a slice service.
3) The first rackets were made in wood with leather gripped handles and natural gut strings. The introduction of aluminum and steel frames paved the way to increasingly lightweight and highly durable materials.
4) Today most racket frames are made of light-weight graphite or graphite composites that incorporate materials such as titanium, kevlar or fibreglass, giving added levels of frame flexibility, while remaining cost effective (???). The most important producers of tennis rackets are Prince and Wilson.
1 answer
2) Another important shot is the volley. The volley involves hitting the ball before it bounces. Finally, another important shot is the serve. You can do two types of serves: a kick serve or a slice serve.
3) The first racquets were made of wood with leather gripped handles and natural gut strings. The introduction of aluminum and steel frames paved the way to making increasingly lightweight racquets with highly durable materials.
4) Today, most racquet frames are made of lightweight graphite or graphite composites that incorporate materials such as titanium, kevlar, or fibreglass. These give added levels of frame flexibility, while remaining affordable. The most important producers of tennis racquets are Prince and Wilson.
http://en.wikipedia.org/wiki/Glossary_of_tennis_terms