1. Global warming Unit 4

3. What causes the global warming? Human activity or a random but natural phenomenon? Think about:

4. When we talk about this problem, we naturally link it to the use of energy and the environmental pollution. But firstly and importantly, energy makes a great difference to our lives. What things do we use energy for?

5. From the following pictures, you will know where all this energy comes from. windmillsa coal power station

6. an oil refinery a nuclear power plant

7. solar panelsa hydro-electric dam

8. Sample lists Things that use energy Sources of energy Renewable / non-renewable light heating television cassette player video recorder oil coal natural gas wind (wind power) sun (solar energy) renewable renewable non-renewable non-renewable non-renewable

9. fridge stove washing machine hair- dryer water( hydro- electric) renewable plant waste (biomass energy) renewable hot springs or geysers (geothermal energy) renewable the sea (tidal energy) renewable computer uranium (nuclear energy) non- renewable

10. Renewable or non-renewable? √

11. Renewable or non-renewable? √

12. Carbon dioxide coal oil natural gas global warming ● ● ● ● ● ●● ● ● ● ● ● Why? Fossil Fuel

13. A greenhouse

15. is made of _______ and is used for growing ________, especially during _____ weather. What is a greenhouse made of and used for? glass plants cold

16. 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. How does a greenhouse work?

17. Greenhouse effect

18. Words study Unit 4 Reading THE EARTH IS BECOMING WARMER — BUT DOES IT MATTER?

19. graph random phenomenon subscribe fuel quantity tend data n. 图表 ; 坐标图 adj. 胡乱的 ; 任意的 n. 现象 vi. 同意 ; 捐赠 ; 订阅 vt. 签署 ( 文件 ); 捐助 n. 燃料 n. 量 ; 数量 vi. 趋向 ; 易于 vt. 照顾 n. 资料 ; 数据 Words preview

20. trend catastrophe flood oppose mild consequence state range n. 趋势 ; 倾向 ; 走向 n. 大灾难 ; 浩劫 n. 洪水 ; 水灾 vt. 反对 ; 反抗 adj. 温和的 ; 淡的 n. 结果 ; 后果 ; 影响 vt. 陈述 ; 说明 n. 种类 ; 范围 Words preview

21. come about subscribe to quantity of go up result in be opposed to even if keep on 发生 ; 造成 同意 ; 赞成 ; 订购 大量的 上升 ; 增长 ; 升起 导致 反对 …… 即使 继续 Expressions preview

22. You can often get an idea of what a magazine article is about by glancing at the title, the first paragraph, the diagrams, and the enlarged quotes. A Useful Skill

23. Skimming to get the answers to the questions on P.27

24. 1. …it is human activity that has caused this global warming rather than a random but natural phenomenon. a random but natural 修饰 phenomenon ， 译为 “ 随意的自然的现象 ” ， but 起一个 语气转折的作用，可不译出。

25. 1.The purpose of the first paragraph is to ___. A.introduce the writer B. explain a change C. introduce the topic D. raise a question 2. The graphs are used to _____. A.illustrate points by providing evidence B.tell the change of temperature C.tell the content of carbon dioxide in the air D.interest the readers skimming Reading Comprehension II

26. Read the passage quickly to find the main idea of each part

27. Scanning to get Detail information

28. True or false?( P27 ) scanning Reading Comprehension III 2 1.The temperature in the last century didn’t seem to increase much. 2. Everyone believes that global warming is caused by the activities of humans. 3. Janice Foster believes she can measure the future global rise in temperature. 4. 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.

29. 1. Greenhouse gases refer to_______. A.carbon dioxide B. the burning of fossil fuels C. byproducts of the burning of fossil fuels D. coal, natural gas and oil 2. Greenhouse effect _____. A. is a natural phenomenon B. happens when there’s too much carbon dioxide C. does great harm to human beings D. makes life for human beings better scanning Reading Comprehension IV

30. 3. _____ found out the amount of carbon dioxide in the atmosphere from 1957 to1977. A. Dr. Janice Foster B. Charles Keeling C. George Hambley D. Sophie Armstrong 4. Which of the following statements is True? A. Burning fossil fuels causes the global warming. B. We will have more food with global warming. C. Global warming means disasters to humans. D. More greenhouse gases will gather in the atmosphere.

31. The different ideas between Dr. Janice Foster & George Hambley Dr. Janice FosterGeorge Hambley Carbon dioxide has caused the global temperature to __________. An increase of five degrees would be a ____________ and could be ______________. More carbon dioxide is a __________ thing, which makes crops _____________ and will encourage _________________ ___________. go up catastrophe very serious positive produce more a greater range of animals

32. Debate AB A : We shall do something about global warming. B : We shall do nothing about global warming.

33. Summary What have you learnt from the text? Try to talk in general terms rather than in details. eg: I learnt that the earth is becoming warmer. I learnt that global warming could have terrible effects on the environment. ….

34. Quiz

35. 1. —Have you ______ some new ideas? —Yeah. I’ll tell you later. [2007 江苏 ] A. come about B. come into C. come up with D. come out with 2. Please tell me how the accident_____. I am still in the dark. (2005 江西 ) A. came by B. came out C. came to D. came about 3. The accident ______ the death of two passengers. A. resulted from B. resulted in C. resulted of D. resulted with I. Choose the proper answer.

36. 4. It is the protection for the trees ____ really matters, rather than how many trees are planted. A. what B. that C. / D. which 5. _____ the people, not things, that are the most important. A. These are B. Those are C. It is D. It isn’t

37. 1. Although we are burning ___________ coal every year, we won’t ________ of it for centuries. 2. If the amount of greenhouse gases continues to ________, we could be facing a global catastrophe. quantities of II. Fill in the blanks using the phrases below. compared to /with come about quantities of go up result in even if be opposed to build up run out run out go up

38. 3. Many scientists believe that global warming has ___________ through the burning of fossil fuels. 4. The washing machine uses too much energy, but ________ we buy a more economical one, it would still use too much water. come about even if

39. 5. The car accident on the main road yesterday ____________ one driver’s death. 6. __________________London, Paris is large. 7. Sediment ( 沉淀物 ) ___________ on the ocean floor. resulted in Compared to /with builds up

40. III. Translation 1. _______________________________( 是 人类活动引起 ) this global warming rather than a random but natural phenomenon. 2. __________________________________ ______ ( 是一位名叫 Charles Keeling 的 科学家 ) made accurate measurements of the amount of carbon dioxide in the atmosphere from 1957 to 1997. It is human activity that has caused It was a scientist called Charles Keeling who

41. 3. All scientists agree that _________________________________ ( 正是燃烧越来越多 ) fossil fuels __________________ ( 导致了 ) this increase in carbon dioxide. it is the burning of more and more that has resulted in

42. Homework 1. Read the passage again and review the new words and expressions. 2. Prepare the debate in groups. 3. Surf the Internet for more information about global warming.

43. rather than 而不是 …… She is a career woman rather than a housewife. 她是职业妇女而不是家庭主妇。 rather than 在更大程度上 These are political rather than social matters. 与其说这些是社会问题，不如说是 政治问题。

44. 2. come about come about: take place; happen 表示 “ 发 生、产生 ” ，多指事情已经发生了，但 还不知道为什么，常用于疑问句和否定 句, 例 : When Mother woke up, she didn’t know what had come about. I’ll never understand how it came about that you were late three times a week.

45. 3. result in 导致, 造成 =lead to The accident resulted in three people being killed. 这一事故导致他的死亡。 The accident resulted in his death. Acting before thinking always results in failure. 做事不先考虑总会导致失败。

46. The accident resulted in the death of two people. 这场意外事故造成两人死亡。 It is an illness that can result ___ total deaf if left untreated. A. of B. from C. in D. to

47. 4. even if /though: used to emphasize that, although something may happen or may be true, it will not change a situation I wouldn't tell you even if I knew.

48. Even if she survives, she'll never fully recover. Even though he's 24 now, he's still like a little child. I can still remember, even though it was so long ago.