1. 新课标人教版课件系列
《高中英语》
选修(模块）6-4.2

2. Language Study

3. A sample poster
Fight global warming
Cut down on energy
Cut down on carbon dioxide
● Not using it ...? Turn it off.
● Don't turn the heat up, put on a jacket.
● Walk or ride a bike.

4. ● Recycle.
● Buy products made from recycled materials.
● Buy energy-saving products.
● Plant trees.
● Talk about global warming.

5. Discovering useful words and expressions (P28)
Go over the new words and phrases in the previous sections. Then complete each sentence with one of those new words or phrases. 1

6. 1. Charles Keeling collected ______on the carbon dioxide content in the atmosphere over a forty-year period. He found that the amount of carbon dioxide _______ increasing during that time.
data
kept on

7. 2. Although we are burning coal in huge _________ every year, we won't ________ of it for centuries.
3. If the amount of greenhouse gases continues to _______ we could be facing a global __________ .
quantities
run out
build up
catastrophe

8. 4. Many scientists believe that global warming has __________ through the burning of fossil fuels. They do not think that ignoring the issue is worth the ____ .
come about
risk
5. ______ describes weather conditions over a period of years in a particular place.
Climate

9. 6. The _____________ of a rising sea level would be widespread flooding.
7. The use of energy in Susanna's country is low ______________ the use of energy in the USA.
consequence
compared to

10. 8. The warming of the earth is a _____________ that causes great concern.
9. The ________ shows temperature changes during the 20th century.
10. One hectare of forest can absorb 23 tons of carbon dioxide ____ year.
phenomenon
graph
per

11. Look at the two graphs on page 26
Look at the two graphs on page 26. Then complete the paragraphs about them with appropriate words.
The first graph shows the global ____________ between ______ and _____ . 2
temperature
1860
2000

12. The temperature _________ and decreased over this period but on the whole it ______ by around one degree Fahrenheit. During this time, the earth reached its ______ temperature in about _____ and its highest in 2000.
increased
rose
lowest
1910

13. There was a steady _______ in the temperature during the twenty years after We can see from the graph that the earth has become ________ since early last century.
The second graph shows the amount of_____________ in the
increase
warmer
carbon dioxide

14. atmosphere from _____ to _____
atmosphere from _____ to _____ . The carbon dioxide _______ steadily over this forty-year period. It went up from 315 to 370 parts ____ million.
1957
1997
went up
per

15. Using Words and Expressions (P63)
Complete the sentences below with the correct word. Use a new word made from a word on the left and a suffix on the right. 1

16. 1. Those factories are causing a lot of ________ with all their noise and smoke.
2. Yesterday the Prime Minister made a __________ announcing new laws to reduce water pollution.
pollution
statement

17. 3. The two countries have reached an _________ on the levels of greenhouse gases they will allow.
4. The quality of the air would improve if there was a ________ in the use of coal.
agreement
reduction

18. 5. The increase in the use of fossil fuels could have _____________ results for the earth.
6. We have lost thousands of trees because of a fire started by an ________ storm.
catastrophic
electrical

19. 7. This species of frog is the only one in __________ in this area
7. This species of frog is the only one in __________ in this area. The rest have disappeared.
8. The two countries are ___________ in their use of natural gas.
existence
comparable

20. 9. Past accidents have shown that building nuclear power stations can be _____ .
10. Many people don't understand the ___________ of the world's environmental problems.
risky
seriousness

21. 11. I wonder whether these floods have been caused by ________ changes.
12. It is extremely ________ that the world will stop using fossil fuels this century.
climatic
doubtful

22. Answer key for Exercise 2 P64 : 1
Answer key for Exercise 2 P64 : It would make a big difference to our environment if we planted more trees around the school. 2

23. 2. The research resulted in a better understanding of changes in the climate.
3. I think our conference was very successful on the whole.

24. 4. There is a wide range of energy sources: coal, oil, natural gas, water power, nuclear power and so on.
5. I think people turn up the heat in their houses too high and just waste energy.

25. 6. Even if there is a steady decrease in the use of oil fuels, the earth will still keep warming up.
7. The headmaster has stated that he is not going to put up with littering in the school.

26. 8. Since your bicycle is broken you can use mine, so long as you take care of it.
9. The consumption of the energy resources in the USA is almost 6 times as much as the average consumption of the whole world.

27. 10. I've glanced at your plan so now I want you to finish your final report.

28. Discovering useful structures (P29)
Answer key for Exercise 1:
1. It was a scientist called Charles Keeling who made accurate measurements of the amount of carbon dioxide in the atmosphere from 1957 to 1997.

29. 2. (They also believe) it is the burning of more and more fossil fuels that is resulting in this increase in carbon dioxide.

30. Explanation 由it引导的强调句结构： It is (was)+被强调部分+that (who) + 句子其他部分
注意：此结构强调的成分仅限于主语，宾语和状语。

31. 如：
原句：My father did the experiment in the lab yesterday evening．
强调主语：It was my father who/that did the experiment in the lab yesterday evening．

32. 强调宾语：It was the experiment that my father did in the lab yesterday evening．
强调时间：It was yesterday evening that my father did the experiment in the lab．

33. 强调地点：It was in the lab that my father did the experiment yesterday evening．
e.g. It was in that city that we met for the first time．
It was not until he told me that I knew the truth．

34. 典型例题分析：
1) It was last night ____ I saw the film Star Wars．
A．who B．when
C．that D．which

35. 答案C 强调句的结构是：It + be + 强调部分 + that (who) +主谓句。强调句的连词只有两个，that和who。当强调的部分是人，且为句子的主语时，才用who，其余用that。

36. 2) It is ten years ____ Miss Green returned to Canada．
A．that B．when
C．since D．as
答案 C考点是连词用法。本题易误选为A 其实本句不是强调句。

37. 若是去掉It be…that还应是一个完整的句子。而本句去掉‘It is…that, 只剩下ten years Miss Green returned to Canada 不成句。因此本句不是强调句。It is + 时间+since...，其中 is = has been.

38. 练习:
1. It was this village ___ I was bought.
A. where B. that
C. on which D. which

39. 2. It was in this village ___ I was bought up.
A. where B. that
C. on which D. which

40. 3. --- Was it under the tree ___ you were away talking to a friend?
--- Sure. But when I got back there, the bike was gone.
A. that B. where
C. which D. while

41. Answer key for Exercise 2:
1. It is greenhouse gases that have warmed the earth by trapping heat energy in the atmosphere.
2. It is the greenhouse effect that gives the earth's surface the average temperature of 15 °C.

42. 3. It is fossil fuels that much of the energy used to light and heat our homes comes from.
4. It is the United Sates of America that is the biggest producer of greenhouse gases.

43. 5. It is for centuries that carbon dioxide stays in the atmosphere while other greenhouse gases stay in the atmosphere only for a day or less.
6. It is their very existence that low-lying countries feel is in danger from rising sea levels.

44. 7. It is human activities that many scientists believe have caused the earth's temperature to rise.
8. It is future climate changes and their effects on our environment that scientists want to find out about.

45. 9. It is by several metres that the level of the sea could rise in the years ahead because of global warming.
10. It is outer space that might provide us with new energy sources in the future.

46. USING STRUCTURES (P64)
Give a full answer to each question about Millennium Kids using the form it is/was... that ....

47. When was the first children's conference on the environment organized in Australia?
It was in 1996 that the first children’s conference on the environment was organized in Australia.

48. 2. Who runs Millennium Kids?
It is children that / who run Millennium Kids.

49. 3. Where can you find out more about Millennium Kids?
It is on the Internet that you can find out more about Millennium Kids.

50. 4. Where do the young people decide which projects they want to concentrate on?
It is at the yearly conference that the young people decide which projects they want to concentrate on.

51. 5. What is Millennium Kids asking you to reduce, reuse and recycle at the moment?
It is plastic bags that Millennium Kids is asking you to reduce, reuse and recycle at the moment.

52. Answer key for Exercise 2:
Indeed, it was four Australian children who started it in 1996 when they organized the first children's environmental conference.

53. 2. It is at this conference that we decide which projects we want to work on in the following year.
3. It was through one of these projects about five years ago that I first became involved in Millennium Kids.

54. Homework
Make four sentences with "it" for emphasis.