air pollution noise pollution
What can fight the pollution?
Trees are pollution fighters.
Oxford English
7B
Pollution
Fighters
Trees:
1 live much longer than people
2 produce wood, rubber, paper, etc
3 heat the air
4 cannot clean the air
5 are like air conditioners
cool the air
4 can clean the air
T
T
T
6 cannot protect themselves against
insects;
7 can share food and water with one
another;
8 are in danger, mainly from
insects
can protect thems lves against
i t
are in danger, mainly from
people/human beings
T
1 What are trees useful for?
Many things. For example, the wood
in the pencil, the rubber on the end
of the pencil, and the paper in the
notebook.
2 Why do we say trees are natural air
conditioners?
Because they can cool the air and
clean it.
3 How many air conditioners can three
trees do the job of?
15.
4 What about the trees now? Are they
in danger?
Yes, they are in great danger.
5 How can some trees do to make their
leaves taste bad to protect themselves?
They can produce a chemical.
1
1Why should we plant trees?
2 In order to greet the Universiade,
what should we do to protect our
environment?
Key Expressions:
pollution fighters
give out
each other
be interested in
thank… for…
for example
环境斗士
发出、放出（气
体）
互相
对…… 感兴趣
为……而感谢……
举个例子
Key Expressions:
communicate with
one another
be in great danger
cut down
与……交流、沟通
相互、互相
处于极其危险的境
地
砍伐、砍掉
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