第三课时一、认识 traffic lights,连一连。1. Go.2. Stop and wait.3. Slow down and stop.二、按要求分类。1. 交通灯颜色 2. 交通灯含义 3. 交通工具三、看图,选词填空。1.(Go/Wait)_______ at a green light.2. Look at the _______(traffic rules/traffic lights).3.(Stop and wait/Wait)_______________ at a r...