The Earth’s Atmosphere教学设计

气体中四分之三的气体都是氮气。

8) People who travel to the mountains find it harder to breathe.

到山上旅行的人发现这里呼吸比较困难。

9) Big cities are full of cars.  大城市里都是汽车。

10) They are used for business and pleasure.   他们是用来商务和娱乐的。

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11) Something should be done about the use of cars in order to have cleaner air.

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为了得到更清洁的空气，应该就汽车的使用问题采取措施。

 

六、本单元重点知识讲解：

1. The ship is made from waste materials.

The T-shirt is made of cotton.

例如：

① The book is made of paper and paper is made from wood.

② The glass is made of glass and glass is made from SiO₂.

2. The air that surrounds the earth is called the atmosphere.

包围地球的空气被称为大气。

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be called  被称为

同义词：be named

例如：

The boy is called “Da Niu” by his classmates.

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The machine is called “Washing machine”.

That city will be called “Water City”.

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