(共35张PPT)
Talk about the advantages of organic farming and the disadvantages of chemical fertilizers.
If you want to plant some crops, what kind of fertilizer will you use? Why?
(Page 15)
Listening
natural organic fertilizer
fertilizer
Listen and tell what is the main topic of the conversation.
A. Holes in our vegetables.
B. A magazine article about a farmer.
C. We should eat more vegetables and
fruit every day.
D. The possible bad effects of chemical
fertilizers on the fruit and vegetables we
eat today.
C
1. Paul thinks that Carrie is not telling him the truth.
2. Using chemical fertilizers always makes vegetables empty inside.
3. Today’s fruit is not as healthy for people as fruit fifty years ago.
4. Eating more vegetables might not always be good for us.
5. All of today’s vegetables look healthy
but in fact are not.
T
F
T
T
F
Listen again and decide if the following statements are true or false, according to the conversation.
When trying to argue people into or out of doing something, we may use the following expressions.
Speaking
I would rather …
I’d prefer …because …
Should I / we …?
This is good value because …
What is the advantage of …?
I don’t like …because …
It’s a great pity that …
It’s better to …
If I have a choice I’d choose … because …
You need to …
Have a conversation in pairs, with one as the farmer and the other as the customer. The farmer is persuading the customer to buy his / her “green food”.
The advantage of green food is …
This is good value because …
It’s better to …
You need to …
I don’t like ... because … expensive.
What’s the advantage of …?
I’d prefer … because …
It’s a great pity that …
FARMER: Good morning! Would you like some organic carrots this morning?
CUSTOMER: Hmm ... They’re a little expensive! What is the advantage of these vegetables?
FARMER: The advantage of these vegetables is that they’re green food so they’re safe to eat and good for your family.
Sample dialogue
CUSTOMER: But what’s the advantages of having green food? I know all vegetables are good for us and those down the road look green too. And I can buy them at half the price there.
FARMER: Well, let me explain. I’d rather feed my family on green food than other vegetables because they’re grown without chemical fertilizers.
CUSTOMER: But the price is too high! I’d prefer to buy good food that I can afford.
FARMER: This is good value for money because you’ll have healthier children. They won’t have to go to the doctor so often and you won’t have to take time off work. In the long run you’ll benefit from it.
CUSTOMER: Certainly I’d like to buy what is safe and healthy. Perhaps I’ll try some of your vegetables and if they are as good as you say. I’ll be back next week.
Eat and Laugh and Share!
Double your pleasure,
double your fun.
We do chicken right.
Life tastes better.
Enjoyment of some slogans
Design a poster for one green food.
Green Food Poster Designing Competition
Buy the best fruits here.
We only sell green food in this shop!
Best choice at best price!
Safe, healthy, clean, fresh. Far away from any pollution.
No chemical fertilizer, all organic fertilizers.
Clean air, clean water.
No poison, no pesticides.
Home in heaven.
farmland or desert?
Can farmland become a desert?
Listening
(Workbook, Page 48)
Do you believe that soil is precious? Why / why not?
What is used to feed the soil in your area? Do you think that is a good / bad idea? Give your reasons.
What do you think is happening to our land?
What do you think is happening to our land?
What are the main reasons for desertification?
Overfarming on poor land.
Overgrazing herds.
Stripping the land of vegetation to turn it into farmland.
Heat and little rain.
Turning forests into farmland.
Overusing fields to feed farm animals.
Using new scientific farming methods.
Wasting water in farms and at home.
Farming too much on poor land.
Tick what you hear.
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1. Why was North Africa important in the first century BC?
A. Rome sent a lot of corn and wheat to North Africa.
B. Land in North Africa was used to produce the bread that fed all of Rome.
C. The desert in North Africa was famous in Rome.
Listen again and choose the best answers.
B
2. How does farmland turn into desert?
A. Wind blows away dry soil and then the land becomes sandy.
B. Hot weather makes the land become sandy.
C. Too many plants can make farmland become desert.
A
How are new farming methods helping to stop the desert in Xinjiang?
A. The methods let the farmers use less water.
B. The methods let farmers grow the same amount of crops in less land.
C. The methods do not use fertilizers.
B
Planting trees is a well-known method to make a difference in the growth of the deserts.
If no one cares for the young trees, will the planting do any good toward stopping the growing deserts?
Speaking
Sample dialogue
A: Have you ever planted trees for Tree-
planting Day?
B: Yes, I have, once. It was fun — three other
students and I had to dig a hole for the tree,
put a small tree into the hole, cover the hole
and then water it.
A: Do you still go back to take care of it?
B: What? No, it’s very far away in the
countryside.
A: I once saw a field of trees that were
planted a few months ago. They were all
dry and brown. We should consider that
caring for the trees we’ve planted is just
as important as planting new trees.
B: I agree, but what about other ways to
turn deserts into green land?
A: Save water. We all must work harder
to save water.
B: I agree.
Listening Task
Early farming, Early culture
Middle East
Egypt
North America
Central America
Now listen to this student’s report on ancient farming and match the descriptions with the sites on the map.
1. B Middle East
2. A Egypt
3. C North America
4. D Central America
1. How do you think advances in farming methods influenced early cultures? Brainstorm some of the ways that a culture might change because of the improvements in farming.
2. What do you know about farming developments in ancient China? Do you know who had great influence on developing good farming methods in ancient China?
Listen again and discuss.
S1: I think advances in farming methods would certainly help improve the health of the people in early cultures.
S2: Yes, I think you’re right. Better health would make better soldiers and better armies, so a culture could defend itself against others and maybe even take over other areas more easily.
S3: It seems that advances in farming methods would also help a culture’s economic growth. It would grow stronger economically, so it would probably last longer.
S4: That’s true. Advances in farming would also make it possible for there to be fewer farmers. There could be more people in different jobs in the culture, because better farms would be able to feed more than just one family.
Homework
1. Surf the Internet for good posters and share with your classmates.
2. Review the whole unit.
