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1、More practice,Air,Air地球的大气，其主要由 78%的氮， 21%的氧气， 0.94%的稀有气体， 0.03%的二氧化碳， 0.03%的其它气体和杂质、 共同组成, 密度为 1.293g/L。,Answer two questions before reading: 1.What is air like? 2.Why do we need air?,No colour, no smell, no taste.,We need air to breathe.,Read and fill in the blanks. Air has no _ and no _. When the
2、 wind blows, you feel the _ on your face. A kite or a plane _ to stay in the sky. A balloon uses _to rise in the air and _ people up. “We need air to survive” means “Air _ us _.”,smell,taste,wind,rides on air,hot air,lift,keeps,alive,Read the poem of more practice,Reading task,Read the poem aloud an
3、d find out the rhymes in each part of the poem. Part One: Part Two: Part Three: Part Four:,taste-face,air-air,air-air,survive-alive,Rules: it rhymes with the words at the end of the second and fourth line in the verse.,Its just May, But the signal is up. A typhoon is coming. Its coming this way! The
4、re are ships in the harbour, Some blue and some grey, But a typhoon is coming, To blow them away.,Observe and find out the rhyme,There were people at work And people at play. Now the typhoon is here, Theyve all gone away. A waiter was holding Ten plates on a tray. But the typhoon came quickly, And b
5、lew them away.,There were horses in Shatin, Just eating their hay, When the typhoon came in And blew it away. Now the typhoon has gone, “Thank goodness!” we say, And we wont have another, For many a day.,根据句意和所给的首字母填空。,1. These fish had delicious t_. They ate it up soon. 2. The Smiths like having a
6、trip at weekends. They enjoy the fresh a_ in the countryside. 3. Men cant b_ under the water with his nose. 4. Is the fish dead or a_? It just doesnt move. 5. Most plants need sunlight. They cant s_ without the Sun.,aste,ir,reathe,live,urvive,Exercise 1,根据中文意思完成句子。,1. 多做运动能使我们保持健康。 Doing more exerci
7、se can _ us _. 2.请把你的椅子提起来。 Please _ your chair _. 3.我们必须保持教室干净。 We must _ _ _ _. 4. 一些鸽子正在空中飞翔。 Some pigeons are flying _ _ _.,Exercise 2,lift up,keep healthy,keep the classroom clean,in the sky,Post reading-air pollution,Where does air pollution come from? It comes from traffic. It also comes from factories. .,
