swimming,游泳英文教程.ppt

Introduction to swimming What are the swimming strokes? 1.Breaststroke （蛙泳） 2.Butterfly （蝶泳） 3.Backstroke （仰泳） 4.Crawl (freestyle) （自由泳） What are the benefits of swimming? 1.Low impact 2.Builds cardiorespiratory（心肺的）fitness and muscle mass 3.Its a break from the summer heat 4.Burns calories Summary Introduction to swimming back What are the swimming strokes? Breaststroke （蛙泳） Butterfly （蝶泳） Backstroke （仰泳） Crawl (freestyle) （自由泳） back What are the benefits of swimming? 1. Low impact 2.Builds cardiorespiratory（心肺的)fitness and muscle mass 3.Its a break from the summer heat 4.Burns calories back Summary Swimming is an activity that builds strength, endurance, and muscle tone. Its an activity that you can do all year long, inside or outside, it burns lots of calories, you can share it with your family, its low-impact, and you can do it until youre 100! Its not too late to start if you never learned how (learning new stuff is cool even when youre adult!), and for those of you who can swim and would like to compete, thats available as well.All in all, swimming is a winner, and if you have the inclination（爱好）, I suggest that you go for it! Thank you! Breaststroke The leg kick: Bring the knees to chest. Thrust the legs backward and straight. Snap the legs together to push the water and propel you forward (frog kick). The arm stroke: Start with the arms overhead. Pull on the water, and bring arms toward the chest. Keep the hands cupped. Return arms to starting position. The breathing: Breathe every time you stroke with your arms. Breaststroke back Butterfly The leg kick: Bend the knees slightly, and keep them together. Make a downward thrust by straightening the knees and whipping the feet downward. There should be two kicks for every arm stroke. The arm stroke: Move the arms together, and pull through the water with the hands cupped. Face the palms outward, and press down and outward. Swing the arm