The outdoor activity I'd like to talk about is tennis, my favorite sport. I started learning tennis when I was 16 years old. It was difficult at first, but I got better as I practiced. 1.是什么运动Tennis is a sport usually played between two players or between two teams of two players each. Each player uses a racket球拍 that is strung to strike a hollow rubber ball covered with felt over a net into the opponent's court. 此户外活动怎么进行Tennis is an Olympic sport and is played at all levels of society at all ages. The sport can be played by anyone who can hould a racket, including people in wheelchairs. I myself have seen disabled people play tennis. They sit in specially-designed wheelchairs and their rules re a bit different, such as hitting the ball back after it bounces twice. Tennis is enjoyed by millions of recreational players and is also a hugely popular worldwide spectator sport, especially the four Grand Slam tournaments: the Australian Open played on grass courts.此活动受欢迎程度 I often watch tennis games with some of my friends, who are also interested in playing. We all think it's a very elegant sport and it's entertaining, educational and teaches us team spirit.

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我想讲的户外活动是网球。我从16岁开始学习网球，一开始的时候感觉很难，后来随着不断练习，我打得越来越好。网球通常包括单打或双打。每个队员使用一个球拍打击一个中空橡皮球，并保证球越过中场的网球到达对手段的区域。网球是奥运会的比赛项目，并风靡各个阶层和各个年龄段的人群。只要是能够把握住球拍的人都可以打网球，甚至坐在轮椅里的残疾人也可以，我本人就曾亲眼看见残疾人打网球，他们坐在特别定制的轮椅里，但是他们的规则有一点不同，比如，只有球反弹两次后他们才击球。网球被千万休闲玩家钟爱，而且在世界范围内也是一项观赏性极强的运动，特别是在四大满贯赛事中，澳大利亚网球公开赛使用硬地网球场，法国网球公开赛使用红粘土球场，温布尔登网球公开赛使用草坪作为球场。我经常和一些也对网球着迷的朋友一起观看网球比赛，我们都觉得网球是一项既高雅又有趣的运动，又富有教育意义，而且它能够教会我们团队精神。