1. Unit4 Global warming

2. large population energy crisis 能源危机 bird flu What effects may the events have on the Earth?

3. What other problems is the earth facing now ?

4. Global warming

5. Reading The earth is becoming warmer— but does it matter?

6. 1.Where is the article from? Who wrote it? It is from a magazine called Earth Care. Sophie Armstrong wrote it. 2. Find out the topic sentence of the passage. So how has this come about and does it matter? 3.The purpose of the first paragraph is to ______. A. introduce the writer B. explain a change C. introduce the topic D. raise a question

7. Divide the rest of the passage into 2 parts: How has this come about(happened)? Does it matter? Para_____ 2—5 6—7 the c_____ of global warming different ________ about global warming opinions cause

8. It is that is to blame for the global warming. The burning of human activity _______ fossil fuels ________ ______ energy greenhouse gases ____ heat from the sun and _____ the earth trap warm more heat tends to be ______ The global temperature ____ ____ trapped goes up huge quantities of extra CO2 function greenhouse________ effect It is a __________ phenomenon natural a lot of / plenty of 1.what causes global warming ? 2.What is “greenhouse effect?” 3. What is global warming? global warming Cause Para (2-5)

9. Datas showing the earth is becoming warmer Graph1:________________________________ Graph2:________________________________ the temperature rose about 1 degree Fahrenheit from 1860 to 2000 the carbon dioxide content in the atmosphere went up a lot from 1957 to 1997 Over the next 100 years, it will go up as low as _________degrees or as high as_____ degrees. 1 to 1.5 5 Providing evidence A writing tip: give the supporting points and details to the writing statement.

10. 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 __________ more and will encourage ____________________. go up catastrophe very serious positive produce a greater range of animals George Hambley is to Dr.Janice Foster’s opinion opposed the n effect will be terrible global warming will do ____ to the earth good a big disaster disagree with negative Opinions Para (6-7)

11. T or F 1.Global warming can be stopped immediately if we take some measures. 2. It is clear what the effects of the global warming will be. F F No one knows ?

12. 3.The author probably agrees that ________ A. actually global warming is good for man. B. we should do nothing about the global warming. C. catastrophes will happen if the globe keeps on warming. D. a lot remains to be found out about the effects of global warming. D 〓〓〓〓〓〓〓〓〓 〓〓〓〓〓〓〓〓〓 〓〓〓〓〓〓〓〓〓 〓〓〓〓〓〓〓〓〓

13. Of the two scientists’ opinions, which are you in favor of ? Why ? 支持 be for / subscribe to （ to 介词） / agree with………. 反对 be against/ be opposed to （ to 介词） / object to （ to 介词） …….. Phrases for reference:

14. What can we do to deal with global warming?

15. .. Try to reduce the use of motor vehicles electric vehicle bike running Try to reduce the use of motor vehicles To reduce carbon dioxide and protect the globe

16. litter classification planting trees

17. Solar energy car

18. Can you find more suggestions about reducing the amount of carbon dioxide and saving energy in our daily life?

19. to Earth Care

20. ending  …… A letter to Earth Care Dear Earth Care, I’m writing to share my good suggestions on how to reduce carbon dioxide and save energy in our daily life. I am sure every one can make a difference. suggestions Yours ……..

21. Just do it. Your contributions count!

22. Make it a better place

23. Homework Finish the letter to EarthCare. Read the passage again and review the new words and expressions.