1. Unit6 Global warming

2. Can you tell what we use energy for? Energy lights our cities Energy heats our buildings Energy entertains us ( watching TV; playing computer etc.) …

3. Where does all the energy come from? Wind mills 风力 更多资源 xiti123.taobao.com

4. a coal power station 燃煤发电站

5. an oil refinery 炼油厂

6. a nuclear power plant 原子能发电站

7. 太阳能接受器 Solar panels

8. a hydro dam 水坝

9. What’s the difference between wind power and coal power? Wind will never run out while coal is a limited source. What is renewable energy and what is non-renewable energy?

10. Try to tell as many as possible Things that use energy Sources of energyRenewable/ Non-renewable lights heating television cassette player computer fridge washing machine hairdryer … coal Non-renewable oil Non-renewable wind Non-renewable nuclear Non-renewable sun renewable water renewable (hydro-electric power) (solar energy) Plant waste renewable hot spring renewable

11. negative effects of using energy Increasing CO 2 pollution global warming

12. Pre-reading

13. What is it in the picture? It’s a greenhouse made of glass. What is it used for? It’s 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.

14. What is greenhouse gases? The gases surrounding the earth, including carbon dioxide, methane and water vapor. What do you think greenhouse gases do? They trap heat from the sun and therefore warm the earth.

15. Reading The earth is becoming warmer— but does it matter? 更多资源 xiti123.taobao.com

16. Main idea of each partWriting techniques While- reading Paragraph 1 Introduce a debating over the issue of global warming Paragraph 2-4 Illustrate how global warming comes about Paragraph 5-10 List 2 different attitudes among scientists towards GW. Paragraph 11 whether people should do something about GW. or not. raising a question giving examples, using graphs, explanation give examples, making contrast Using a question, leaving readers to think over the issue

17. Should we do nothing about global warming? Debate: Homework: