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课件网) 牛津版 英语（九年级下） Unit 3 The environment Reading 课堂教学目的 1 2 新课导入 3 Content 课堂活动 5 课堂训练 6 课堂小结 4 课堂重难点 课堂教学目的 1 2 课堂重难点 掌握本单元中的话题词汇和相关高频词汇，如：greenhouse effect, sea level, recycle, green 等。能运用略读、预测等策略，初步了解主阅读篇章的体裁、结构和主要内容。 文化意识 课堂重难点 思维品质 课堂教学目的 运用略读、预测等策略了解主阅读篇章的体裁、结构和主要内容。 学会更多的绿色低碳环保知识，树立环保从我做起，从小事做起的环保意识。 从不同的角度理解环境问题背后的深层原因，在提问和讨论中学会独立思考和批判性思维。 Do you like living here a clean city… 新课导入 3 The earth is in danger. But our environment is getting worse and worse. a polluted city a polluted earth water pollution air pollution There are 4 kinds of pollution damaging our environment. noise pollution land pollution There are 4 kinds of pollution damaging our environment. As a result of pollution and the greenhouse effect, the Earth‘s temperature is increasing. Some gases around the Earth are like the glass of a greenhouse, letting sunlight in and keeping heat from getting out and causing the Earth to warm up. We call it The greenhouse effect Do you know what is “the greenhouse effect” Heavy smoke from factories and waste gases from cars or trucks go into the air. Can you list some reasons causing “the greenhouse effect” People cut down trees because trees take in CO2 and produce oxygen. Cutting down trees also destroys the homes of the animals that live in our forests, co2 O2 take in give out Can you list some reasons causing “the greenhouse effect” What is the result of the greenhouse effect Let’s discuss the Earth‘s temperature is increasing. This causes sea level to rise, and may cause cities to disappear. The climate zone moved northward, causing ecological problems. 气候带北移，引发生态问题 What is the result of the greenhouse effect Result in floods and even more damage to the environment. What is the result of the greenhouse effect What do you know about … What do you know about the greenhouse effect 课堂活动 4 What do you know about the greenhouse effect Match the first half of the sentences in column A with the second half in column B. Write the correct letters in the blanks. A 1 There is an atmosphere 2 It controls 3 However, we are polluting 4 The gases cause the atmosphere 5 The Earth is getting 6 We call this B a the greenhouse effect. b the Earth with harmful gases. c warmer and warmer. d to keep in too much heat from the Sun. e around the Earth. f the Earth’s temperature. _____ _____ _____ _____ _____ _____ e f b d c a A1 Read the sentences. 1 There is an atmosphere around the Earth. 2 It controls the Earth’s temperature. 3 However, we are polluting the Earth with harmful gases. 4 The gases cause the atmosphere to keep in too much heat from the Sun. 5 The Earth is getting warmer and warmer. 6 We call this the gre ... ...
