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1、Unit 3More practice五.More practice: air1. Introduce some background about this topic “air.” Air-地球的大气，主要由78%的氮气、1%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、杂质气体共同组成,密度为 1.293g/L。 2. Before reading, answer two questions:3. Read and fill in the blanks4. Read the poem of more practice. 语音(10)语调(10)音量(10)感
2、情(10)语速(10)5. Read the poem aloud and find out the rhymes in each part of the poem.Rules: it rhymes with the words at the end of the second and fourth line in the verse.6. Give Ss a poem to find out the rhyme.7. Find out some rules and try to write a new poem8. Post reading-where does air pollution come from?9. Study skill: make a good use the contents page to get some useful information:10.read:The story of the ten suns “and use the key words to retell the story11. Self-assessment