人教版必修六-Unit4-Global-Warming-(reading).ppt

1、Unit 4 Global warming, What are they? What are these buildings made of?,Whats the use?,greenhouse / glass,A greenhouse is used for_, especially during _ weather.,Pre-reading,Turn to Pre-reading 1, Page 25. Read & answer.,growing plants,cold,_ the heat from the sun,keeps it from _,_ the air up,How do

2、es a greenhouse work?,trapfrom: keep sth in a place 存住来自的,traps,escaping,heats,In the atmosphere surrounding the earth there are gases, which are called “greenhouse gases”.,methane mi:en,water vapor,carbon dioxide,Greenhouse gases?,What do you think greenhouse gases do?,Greenhouse gases _ the heat o

3、f the sun and therefore _ the earth. It is known as _.,Nowadays our earth is becoming _.,greenhouse effect,trap,warm,warmer and warmer,The earth is becoming warmer - but does it matter?,Reading,Page 26,Skimming,Skim the body part(7 paras):,Para. 1,Para. 2-5,I,II,Para. 6,III,Para. 7,IV,Introduction,B

4、ody,Conclusion,Main idea of each part,Part 1 (1),B. Introduce a debate over the issue of global warming.,Part 2 (2-5),A. How global warming comes about.,D. List two different attitudes among scientists towards global warming.,C. Its up to readers to think and decide whether people should do somethin

5、g about global warming or not.,Part 4 (7),Part 3 (6),1.Who wrote the magazine article? 2.What is the name of the magazine?,Part.I (1),Answer the questions.,Sophie Armstrong.,The name is Earth Care.,Introduce a debate over the issue of global warming.,Reading tips: In English, some nouns begin with a

6、 capital letter(大写字母), such as names of people and places, titles(标题) of magazines, newspapers, stories and books, peoples titles(头衔), etc.,3.What is mainly discussed in the passage?A. What has caused the global warming and whether it matters.B. What effects of the global warming will be.C. How seri

7、ous the global warming could be.D. What the global warming is.,Skimming,Reading tips skim the title and Para 1: Title: THE EARTH IS BECOMING WARMER BUT DOES IT MATTER? Para 1: how has this come about and does it matter?,Part.II (2-5),How global warming comes about.,Everyone believes that global warm

8、ing is caused by the_.,human activities,2. _has caused the increase in carbon dioxide.,A. The burning of more and more fossil fuels.,B. The natural phenomenon.,Fossil Fuel(矿物燃料),coal,oil,gas, ,produce,What are the two graphs about?,Graph 1 shows the temperature difference (温度差异) from 1860 to 2000.,G

9、raph 2 shows the carbon dioxide content(二氧化碳含量) in the atmosphere from 1957 to 1997.,Graph 1:,Graph 2:,Part.II (2-5),How global warming comes about.,The rise in carbon dioxide is causing a steady increase in temperature.,burning fossil fuels,more heat trapped,result in,byproduct,process,more CO2,Glo

10、bal Warming,Tip: You can know somebodys opinion through understanding his or what he said.,What do Dr. Janice Foster and the scientist George Hambley think about the results of global warming? Do they agree with one another?,quotations(引言),go up,catastrophe,very serious,positive,produce,a greater ra

11、nge of,The different ideas between Dr. Janice Foster & George Hambley,Dr. Janice Foster thinks the effects of global warming could be very serious. George Hambley thinks global warming will be mild with few bad environmental consequences.,They dont agree with each other.,Para 6,Part4 (7),Debate,A :

12、We shall do something about global warming.,B: We shall do nothing about global warming.,Does that mean we should do nothing? Or , are the risks too great?,Does global warming matter?,Positive effects,Negative effects,Summary,This passage aims at showing us how global warming_. _ has caused this global warming. It also introduces two different _of scientists towards the increase of temperature. Dr. Janice