介绍:
必会单词
Able adj. 能够 yell v.呼喊
Look around 环顾四周 float v. n. 漂浮；漂浮物
Knot n. 扣子；打结 pants n.长裤
Squeeze v.挤压 waist n.腰
Throw v. 扔 plastic bottle n.塑料瓶
Flow v.浮 wrap v. 包裹
重点句子
1.What do you do if you fall in the water?
2.Then swim to shore if you are able.
3.What if you can’t swim to shore?
4.Then float on your back.
5.Look around for something to hold on to.
6.Take off your pants.
7.Tie a knot at the end of each leg.
8.Wave them above the water to fill them with air.
