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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 數字 +單位 +形容詞 例如: metres tall 一米七高 6 metres wide 六米寬 20 kilometres away 20公里遠 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! 【典型例題】 ① The ruler is ( 20厘米長) . 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 保護……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