高中英语 45(Unit4 Reading)课件 新人教版选修6 课件VIP免费

新课标人教版课件系列《高中英语》选修 ( 模块） 6-4.5Reading What is the greenhouse made and used for? A greenhouse is made of glass and is used for growing plants, especially during cold weather.• How does it work? The air inside is warm because the glass traps the heat from the sun and keeps it from escaping. This makes the greenhouse heat up and so the plants can grow throughout the cold period.• What are the “greenhouse gases”? In the atmosphere surrounding the earth there are gases, which are called “greenhouse gases”, including carbon dioxide, methane( 甲烷 , 沼气 ) and water vapor.• What do you think greenhousegases do? They trap heat from the sun and therefore warm the earth.Main ideas of each partWriting techniques( Paragraph 1 )Introduce a debate over the issue of global warming. Raising a questionMain ideas of each partWriting techniques(Paragraphs 2---4 ) Illustrate how global warming comes about.Giving examples, using graphs, explanation. (Paragraphs 5---10 ) List two different attitudes among scientists towards global warming.Giving examples, making contrast. (Paragraph 11 ) It's up to readers to think and decide whether people should do something about global warming or not. Using a question, leaving readers to think over the issue. Comprehending浓度单位• Glance quickly at the magazine article and answer the questions.1.Who wrote the magazine article? What is the name of the magazine? Sophie Armstrong wrote the magazine article. The name of the magazine is Earth Care.2. What are the names of the three scientists mentioned in the article? They are Dr. Janice Foster, Charles Keeling and George Hambley.3. What do they think about global warming? Do they agree with one another? They ...