Unit 4 A Spring Outing短语：a spring outing 春游 climb a mountain 爬山good idea 好主意 get on the bus 上车shout to 对喊 at the top of 在顶部句型：We are going for a spring outing.You can take some food with you.What are you going to take with you?Wang Tao is shouting to his classmates.
