北京课改版英语八下unit6theearth’satmosphere内容摘要：
lassmates. The machine is called “Washing machine”. That city will be called “Water City”. 3. It surrounds the earth like a blanket— 20 miles thick. 20 miles thick 20英里厚 数字 +单位 +形容词 例如： metres tall 一米七高 6 metres wide 六米宽 20 kilometres away 20公里远 ① Our classroom is three metres tall, 7 metres long and 6 metres wide. ② The Yellow River is 5000 kilometres long It is the second longest river in China. ③ The river is about 20 metres deep. You mustn’t swim in it. It’s too dangerous! 【典型例题】 ① The ruler is （ 20厘米长） . ② The book is （ 5厘米厚） . ③ The hole is about （ 50米深） . ④ The tree is nearly （ 36米高） . 4. The atmosphere protects the earth from the sun’s heat. protect…from 保护……免遭 例如： ① The thick coat protects the body from the cold. ② The helmet protects the head from the rock. ③ The plastic cover protects the book from being broken. 5. Nothing co。阅读剩余 0%
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