9B Unit4 Life on Mars welcome to the unit

Comic strip and welcome to the unit

New words Mars n.火星 helmet n.头盔 air tank 氧气罐 dried food 干粮 power pack n.电源包 sleeping bag 睡袋 gravity n.重力

Mars / Red Planet

火星(Mars)是太阳系八大行星之一，是 太阳 系由内往外数的第四颗行星，直径约为地球的一 半，自转轴倾角、自转周期均与地球相近，公转 一周约为地球公转时间的两倍。橘红色外表是因 为地表的赤铁矿(氧化铁)。 火星基本上是沙漠行星，地表沙丘、砾石遍布没 有稳定的液态水体。二氧化碳为主的大气既稀薄 又寒冷，沙尘悬浮其中，每年常有尘暴发生。 火星有两个天然卫星：火卫一和火卫二，形状不 规则，可能是捕获的小行星。 2013年12月公布的探测资料表明，火星上存在已 干涸远古湖泊，或有生命出现证据。

Watch and answer the questions:

How does Eddie like life on Mars? He hates it. Why does Eddie hate life on Mars? Because he cannot get to his food with the helmet on the head.

The important expressions and sentences: think about思考，考虑 travel into space 到太空旅行 How do you like ….?你认为…怎么样？ =What do you think …? get to my food迟到我的食物

What will you take if you can visit another planet?

power pack

dried food

sleeping bag

computer

air tank

special boots

tent

space helmet

Which one is useful ,and which one is useless?

Useful: Air tank: can provide oxygen Computer: can be used to record your daily life in space and search for information Dired food: can keep you away from hunger Power pack: can provide energy Sleeping bag: can provide a place to sleep, need to fix it on sth.to prevent it from floating Space helmet: can block out strong sunshine and protect your eyes Special boots: can add weight to help you walk more easily in space with low gravity Useless: tent: no wind or rain in space

Work in pairs to discuss how to live on Mars.What does Amy think they would need to wear on Mars? She thinks that they would probably need to wear special boots. What does Amy think they would have to eat on Mars? She thinks that they would have to eat dried food.

The important sentences: What would it be like to live on Mars? But there would be no pollution on Mars.