Im a bird. I can fly.Im big and hard. I dont eat. What am I?I live in the sea. I can swim very fast. But Im not a fish.Im a traffic tool.Please tell me“What am I?”.Its a kind of train .Its under the ground. It runs fast.Whats this?Im a traffic tool. Im very long. What am I ? planeshiptrainsubwaybikebuscargo to school on footby plane by ship by subway by train by bus by bike on footIm 4 years old. I go to Jiangxinyu in summer holiday.Guess! How do I go to Jiang xinyu ?I go to Jiangxinyu by ship.Im Mike .I go to Beijing in summer holiday.Guess! How do I go to Beijing?I go to Beijing by train.Sarah: I go to England in summer holiday.Chenjie: How do you go to England?Sarah: I go to England by by planeHow do you go to I go to on foot / byvHow do you go to Canada?I go to Canada by Plane.vHow do you go to Shanghai ?I go to Shanghai by train.vHow do you go to Wenzhou ?I go to Wenzhou by bus.vHow do you go to school?I always go to school on foot.Because my home is near.I always go to school on foot.表示频度的单词： alwaysusuallyoften sometimesnever