游泳英文.ppt

游泳英文
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Introduction
Swimming has been recorded since stone age paintings from around 7,000 years ago，and today it has become a very popular sport around every corner of the world.
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swim styles
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Freestyle(free)
Tips：
The body rolls around like round logs in the water.
Pull arms underwater in an "S" pattern.
When you breath, you should keep your chin closely on the shoulder, and the swimming glasses half under the water.
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Breaststroke(breast)
Tips:
Snap the legs together to push the water and propel you forward (frog kick).
Head out of the water with the arm pulling.
Breathe every time you stroke with your arms.
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Backstroke(back)
Tips:
Thumb leaves the water first, and little finger into the water first.
Move the hands in an "S" pattern when they are pushing the water.
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Butterfly(fly)
Tips:
The waist and abdomen send force.
Pressure shoulders raise hip.
Arm pull once and kick twice.
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Benefits
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