高二英语选修6第四单元reading1讲课稿

1、高二英语选修6第四单元reading12. How does the greenhouse work?The air inside was warm because the glass traps(挡住挡住, 吸收吸收) the heat from the sun and keeps it from escaping(逃跑逃跑). This makes the greenhouse heat up(热量热量上升上升) and so the plants can grow throughout(在在期间期间) the cold period.4. Greenhouse EffectGlobal

2、warmingGreenhouse gases trapped the heat from the sun, which causes the temperature of earth goes up. Methanemi:ein What are Greenhouse gases?There are gases called “greenhouse gases”, includingCarbon dioxideWater vaporcarbon dioxideFossil Fuel(矿物燃矿物燃料料)coaloil gasglobal warming produce二氧化碳二氧化碳4. Wh

3、at are the two graphs about?The first graph shows the temperature increase of one degree Fahrenheit between 1860 to 2000. The second graph shows the carbon dioxide content in the atmosphere from 1957 to 1997.THE EARTH IS BECOMING WARMER BUT DOES IT MATTER? ReadingNew Words and expressionstemperature

4、 温度 one degree Fahrenheit 华氏一度explore 探索human activities 人类活动phenomenon 现象 subscribe to 同意，赞成 fossil fuels 矿物燃料byproduct 副产品 “greenhouse” gases 温室气体atmosphere 大气methane 甲烷， 沼气degree Celsius 摄氏度quantities of 大量的accurate measurements 精确的测量data 资料，数据catastrophe 大灾难be opposed to 反对environmental conseque

5、nces 环境影响a great range of 大量的 even if 即使 keep on 继续 1) How many paragraphs does the reading 2) Make a division of the text.Read the passage quickly (3)text consist of? Please number them.Fast-ReadingParagraph 1Paragraphs 2&5Paragraph 6Part1Part2Part4Main idea of the textPart3Paragraph 7How globa

6、l warming comes about? (全球变暖是怎样产生的全球变暖是怎样产生的)Two different opinions about global warming.The earth is becoming warmer.Should we do anything? The earth. B. Global warming. C. Becoming warmer doesnt matter. Newspaper B. Novel C. Magazine Who wrote the article?What is the name of the magazine?Skim the

7、first paragraph: What are the names of the three scientists mentioned in the article?3. What do the three scientists think about global warming? believes it is the burning of more and more fossil fuels that is resulting in a big increase in carbon dioxide.Dr. Janice FosterGeorge HambleyCharles Keeli

8、ngthinks the effects of global warming could be very serious(严重的严重的).thinks global warming will be mild with few bad environmental consequences. cause the sea level to rise severe storms floods droughts famines the spread of diseases disappearance of speciesPositive effects Negative effects make pla

9、nts grow quicker crops will produce more a greater range of animals make life betterTrue or false?1. The temperature in the last century did not seem to increase much. 2. Everyone believes that global warming is caused by the activities of humans.3. Janice Foster believes that she can measure the fu

10、ture global rise in temperature.TTF4. The rise in carbon dioxide is causing a steady increase in global warming. 5. George Hambley believes that global warming will do good rather than harm to the earth.6. It is clear what the effects of global warming will be.TTFSevere stormsdroughtsfaminesthe spread of diseasesdisappearance of speciesA : We shall do something about global warming.B: We shall do nothing about global warming.DebateWhat we should do to protect our earth?Discussion:1. Reduce the burning of fossil fuels 2. Plant trees 3. Use bags that can be recycled Homework1. Read