Fighter

First, __________(workers/arrive/lorry). On the back of the lorry there _____(be/trees/brushes). The workers _____(dig/holes/ground). Second, they _____(plant/trees/holes). Next, they brought some large containers. They _____(put/earth/containers). Then they ____ ( plant / brushes / containers ). Next, they _____(pick up/all rubbish) and _____(sweep/area/neatly). After that, they _____(water/plants/hose). Then the area was finished. Now it looks_____.
healthy 5 Trees make oxygen _____ to keep us alive and _______.
paper useful things like _____ fruit and _____. 6 Trees provide us with _____ pollution 7 Trees help us to fight ________. danger 8 Trees are in _____.
B: I think thatthinks that the most important way to fight pollution is to _____. The second is to _____. The third is to _____. The fourth is to _____. The fifth is to _____. Everyone in our group agrees/Most people in our group agree to this arrangement.
Trees:
1. live much longer than people;
3. release take oxygen from the air; F 4. heat cool the air; F 5. are like air conditioners;
T
2. produce rubber, wood, paper, nuts, beans and fruit; T
We get __________from trees. furniture
paper We get _____from trees.
We get _______from pencils trees.
We get _____from trees. coke
We get coffee __________from trees. beans
Answer the questions
5. Can trees really communicate with one another? Yes. For example, if insects attack a tree, it can warm its neighbors. 6. And can they really protect themselves from insects? Yes. They can produce a chemical that makes their leaves taste nasty. 7. Can trees help one another? Yes. For example. They can join their roots together underground and pass food and water around. 8. Is it true that, every year, there are fewer and fewer trees in the world? Yes. The reason is that people cut down millions of trees, but replace hardly any of them.
Listening
Listen and complete the notice below by putting one word in each space. Eight reasons for helping to plant trees: 1 Trees make streets more ________. beautiful noisy 2 Trees make streets less _____. purer 3 Trees make our air _____. 4 Trees make our air cooler _____.
2. a. b. c. 4. a. b. c. 6. a. b. c.
pure not mixed with other things not comfortable running traveling working playing hardly any quite a lot almost none a large number
Write a short article about building a new sitting-out area near your home for your school newspaper.
Near my home, there is a _______. Some workers finished it last week. I watched them from my flat.
What does the word mean?
1 1.suppose
a. know b. think it is true c.ask 3. release a. bring in b. take away c. let out 5. communicating with a. attacking b. sending message/ signals to c. joining
Pollution Fighters
Look and Think
What good are trees?
We get shade from trees.
We get__________from better cities trees.
We get _____________from trees. wooden houses
shopping.
A: Anything else? B: Stop factories from producing unhealthy gases, plant more trees in the streets, and make classrooms less noisy. A: Which ways are more important and which ways are less important?
Make a dialogue according to the model:
Model:
A: What can we do to fight pollution? B: Always put litter in litter bins, and stop using plastic bags for
What are they doing now?
They are having a rest under the trees.
They are planting trees.
They are picking apples from the apple trees.
They are cutting trees.
Think over how many kinds of pollutions we have learned before and what they are. After class, try to find the pollution fighters of them and write a composition about them.
T
6. cannot protect themselves against insects; F can 7. can share food and water with one another; T 8. are in danger, mainly from insects; people/humans F
Do you know the meaning?
1. sip 2. nature 3. oxygen a. made by nature, not by man b. unpleasant c. drink in small amounts
4. hectares
5. warn 6. a chemical
fruits We get ______from trees.
How long do they live?Match the items on the left with the average ages on the right. a mice i 70 years b trees ii 150 years c tortoises iii 40 years d whales iv 4000 years e people v 3 years
Answer the questions
1. We get some useful things from trees, don’t we? Yes. Two examples are wood and rubber. 2. Is it true that trees do two main things to the air? Yes. They cool it and clean it. 3. I’ve heard that one tree has the power of 15 air conditioners. Is that right? No. One trees has the power of five air conditioners. 4. Scientists know a lot about trees, don’t they? No. they are only now beginning to understand them.
d. a life-giving gas found in air
e. something produced by chemistry f. areas of 10000 square meters
7. nasty
g. gay that something bad or dangerous or may happens