Step1 Warm-up（热身及预习展示）

　　1.    Show a part of picture and let students guess

　　引出单词：bike，学习词组：by bike，造句： I come to school by bike.

　　2.    Listen and guess.

　　播放小汽车的声音，让学生猜猜是什么交通工具。同样引出单词：car，学习词组：by car，造句：I come to school by car.

　　3.    讲解“by+交通工具”的用法。特例：步行 on foot.

　　Let‘s chant：

　　How do you get there？

　　You go by subway.

　　And I will go by taxi.

　　And I will be at school before you.

　　You go by airplane.

　　And I will go by a big ship.

　　And I will be in Scotland before you.