1. Reading

2. 1. What has Lo done?
He has painted himself
green.
2. What did Hi tell Lo to do ?
He told Lo to be greener.
3. Does Lo understand what Hi mean?
No, he doesn’t.
4. What did Hi mean when he told Lo to be greener?
He meant that Lo should care more about the environment.

3. What do the pictures tell us?
They are surprised
to see that a lot of
trees have been cut
down.

4. Heavy smoke from chimneys
and waste gases from cars
or trucks pollute our air.

5. Birds fly away because cutting down trees destroys their homes.

6. Lots of unrecyclable plastic lunch boxes are
used ant then thrown away by people.

7. This creates mountains of rubbish and
pollutes our land and seas.

8. Our world is in danger!

9. What do you know about
the greenhouse effect?

10. A B E F B D C A How does the greenhouse happen?
There is an atmosphere.
It controls
However, we are polluting
The gases cause the atmosphere
The Earth is getting
We call this
A the greenhouse effect
B the Earth with harmful gases
C warmer and warmer
D to keep in too much heat from the Sun
E around the Earth
F the Earth’s temperature E F B D C A

11. Before you read D 1. What is the article mainly about?
The main problems we face.
2. What problems does the article discuss?
The greenhouse effect,
cutting down forests
and bad habits.
3. Where can you read the article? D
A. an ad B. comic book
C. a poster about Earth hour
D. environmental science book

12. Reading

13. Reading tips(阅读技巧)
1.Title --全文的主题
The world is in danger.
2. Introduction---全文的大意及结构
Our world is in danger….
3.Subtitle/sub-heading--所在段落的大意
The greenhouse effect
Cutting down forests
Bad habits
4. Pictures

14. Vocabulary
C1 The words in italics explain the meanings of some words on page 35. Find these words to complete the sentences. Change their forms if necessary.
__________ the flood, many people were left homeless. (because of the effect of)
The world population will continue to ______ for many years to come. (to become greater in number)
As a result of
increase

15. 3. The mountain is high. It is 3,000 metres above _______
3. The mountain is high. It is 3,000 metres above _______. (the height of the ocean)
4. Man first walked on the _______ of the Moon in (the top part of an area of land)
5. There were __________ toys in the shops during the Christmas holidays. (a very large number of)
sea level
surface
mountains of

16. General reading 5M’
Finish D1 on page 37

17. 指出以下各句中斜体词指代的什么？
The writer says that it is in danger.
our world/the earth.
2. It is necessary for all living things.
The atmosphere around the Earth.
3. CO2 comes from burning them.
Fuels such as petrol and coal.

18. 4. This causes sea level to rise.
The increasing temperature.
5. It causes the surface of the soil to be easily destroyed by rain.
Cutting down trees.
6. Many of our habits cause this.
pollution.

19. General reading 4M’
Finish D2 on page 37

20. 1.Because of pollution, _______. not enough sunlight is reaching Earth
D2 on page 37
1.Because of pollution, _______.
not enough sunlight is reaching Earth
not enough heat is leaving the Earth
not enough CO2 is leaving the Earth
依据: Too much of this gas pollutes the atmosphere and causes it to keep in too much heat. （第一个问题） b

21. 2. If there are more trees, the amount of CO2 in the atmosphere will be ______.
a. greater
b. less
c. the same
依据: trees take in(吸收) CO2.（第二个问题） b

22. 3. We can help protect the environment if we _______.
a. change our bad habits
b. become consumers
c. buy more products
排除法做题 a

23. 4. The purpose of the article is to make ______.
a. people do more to protect the environment
b. more people become consumers
c. People learn more about the environment
依据: 第一段第二句: We must do something to protect the environment. a

24. Detailed -reading 细读

25. Read the sentences again1 2 3 4 5 6

26. carbon dioxide Problem 1 A gas called _______ causes the atmosphere to
keep in too much heat from the sun. This kind
of gas is produced when we _______ such as
petrol and _____. As a result of the greenhouse
effect, the Earth’s temperature is _______.
And this causes sea level _______, and in the
future cities may _______ because of it.
CO2
burn fuels
coal
increasing
to rise
disappear

27. Problem 2
What is the result of cutting down huge
areas of forests?
Cutting down huge areas of forests makes the greenhouse effect worse.
Besides, it also destroys the homes of the animals.
What’s more, it causes the surface of the soil to be easily destroyed by rain, which can result in floods.

28. Problem 3 Bad habits Never turn off lights Throw away rubbish
everywhere
Problem 3 Bad habits
Wash face with running water
Use too many disposable(一次性)
boxes and chopsticks
Use too many plastic bags

29. Bad habits
Many of our habits cause pollution. People often use things once and then throw them away, or leave them on the ground as litter. This creates mountains of rubbish and pollutes our land and seas. 一次 扔掉 垃圾
堆积如山的+可数/不可数
No littering

30. Fill in the table according to the last part

31. Solutions What can we do to protect the environment?.
★become “green consumers”.
★recycle as many things as we can.
★reuse things for the same purpose as
before or for new purposes.
Q: What is a green consumer?
A green consumer means a person who only buys and uses environmentally friendly products.

32. Summary The greenhouse effect take proper action in danger
这是一篇介绍环境问题的说明文
特点：
1. 说明问题
2. 解决问题
Summary
The greenhouse effect
take
proper action
in danger
Cutting down forests
Bad habits

33. Words 11. destroy 12. surface 13. soil 14. flood 15. proper 16. habit
17. friendly
18. purpose
19. solution
20. government
1. atmosphere
2. temperature
3. consumer
4. concern
5. lifeless
6. fuel
7. coal
8. result
9. increase
10. sea level
摧毁，毁灭
大气层 温度 表面
消费者 土壤
担心，忧虑
洪水，水灾
无生命的
恰当的 燃料 习惯 煤
无害的
结果n
目的，用途
增加，增长
解决办法
海平面 政府

34. 短语收藏夹 1. greenhouse effect 温室效应 2. in danger 在危险中 3. as a result of 由于
4. result in
5. mountains of
6. take action
7. make a difference
*8. keep sth / sb from doing sth
*9. keep in
温室效应
在危险中 由于
造成；导致
许多；大量
采取行动
有作用；有影响
阻止某物/某人做某事
贮存；储备

35. *10. cut down
*11. throw sth away
*12. be the same as ...
*13. be different from ...
*14. because of (doing) ...
*15. a large number of ...
*16. take in
*17. as ... as possible
= as ... as one can /could
*18. change one’s bad habit(s)
*19. (be) friendly to ... 砍伐
丢弃某物
与……相同
与……不同
因为（做）……
大量的…… 吸收
尽可能……
改变某人的坏习惯
对……无害的；
对……有帮助的

36. environment
control
necessary
sunlight
heat
cause
litter litre
reuse
product
homeless
loss name
a cartoon character
living things
too much
in the future
in order to do
need to do
use…for…
continue to do
put --- in danger

37. make a difference mountains of take action cutting down 一、根据汉语意思完成句子。
1. 你告诉我的一切可能会影响我自己的看法。
What you have told me may _____ _____ _____ to my own opinion.
2. 他们要完成堆积如山的工作。他们多累啊！
They must finish _____ _____ work. How tired they are!
3. 我们应该从现在开始采取行动来保护环境。
We ought to _____ _____ to protect the environment from now on.
4. 我们应该停止砍伐树木，因为它们对我们有用。
We must stop _____ _____ trees because they are useful to us.
make a difference
mountains of
take action
cutting down

38. 二、将下列句子改为同义句。
1. The weather in Beijing is not the same as that in Guangzhou.
The weather in Beijing _____ _____ _____
that in Guangzhou.
2. They have to put off the sports meeting because
it is raining heavily.
They have to put off the sports meeting _____ _____ the _____ _____.
3. He ran as fast as he could.
He ran _____ _____ _____ _____.
is different from
because of
heavy rain
as fast as possible

39. in danger make a difference take action increase result in
C2 Complete the conversation below with the words from the box. Change their forms if necessary.
in danger make a difference take action increase result in
Mark: The burning and cutting down of trees all
over the world _________ the loss of our
forests. Why do you think people do that?
Jenny: The world’s population is growing fast.
That’s probably the main reason. People
need land to live on.
results in

40. Mark: I suppose so. But forests are important to us. Trees take in CO₂
Mark: I suppose so. But forests are important to us. Trees take in CO₂. When so many trees are being cut down, the CO₂ in the Earth’s atmosphere __________. This causes the temperature to rise and puts the world __________.
Jenny: To _____________, we need to stop cutting down so many trees, and we should use as few wood products as possible.
Mark: You’re right. Everyone should __________ to protect the Earth.
increases
in danger
make a difference
take action

41. 三、单词拼写：
1. The world population will continue to i___________ in the next few years.
2. If we don't protect the Earth, it will be l__________ as the Moon.
3. Cutting down trees d________ the surface of the soil.
4. We can r_______as many things as we can to protect the Earth.
ncrease
ifeless
estroys
ecycle

42. 5. We still can't find out a s______ to the problem.
6. Smoking is a bad h_______.
7. We should make a p_______decision before doing something important.
8. He shows great c_______ for the coming exam. Because he doesn't prepare well.
olution
abit
roper
oncern