Unit 9. Deserts

Date of preparation: 2/1/09
Period: 55

Pair-work: Discuss the following questions

What is a desert?
How is a desert formed?
Can human beings make a desert? Why/ why not?

Unit 9: Deserts – Listening – Before listening

Listen and repeat:
Frightening speed
Australia
Sahara
Firewood
Petroleum
Mauritania
Tốc độ đáng sợ
Nước úc
Xa mạc Sahara
Củi đốt
Xăng đầu

Unit 9: Deserts – Listening – Vocabulary
n
Many of the plants, such as the cactus,
have hard needles instead of leaves.
Space seems to have no limit in the desert.
Only trees with hard needles
can grow in deserts
1. T
2. F
3. T
4. F
5. T
True or False statement
Unit 9: Deserts – Listening – Task 1: True or False
In a desert, everything is hard.
Nothing is soft
This is partly because of natural changes,
But the greatest desert makers are humans.
Nature causes the change in the size
and location of the world deserts.
Rabbits are one of the agents that
help make deserts in Australia.
There a millions of rabbit in Aus, and
they eatevery plant they can find….
Space seem endless.
What central theme does the talk examine?
What is a desert?

What causes the growing of the world’s deserts?
In what way do rabbits contribute to the growing of deserts in Australia
Unit 9: Deserts – Listening – Task 2
Listen and answer the questions:
It examines deserts, what they are
and how they are formed.
2. It is a hot, dry, sandy place. It is also a beautiful land of silence and space.

3. Nature and humans

4. They contribute by eating every
plant they can find. This makes
the land become deserts

In developing countries,(1)……………. of the people use wood for cooking and heat. They cut down trees for firewood. But trees are important. They cool the land under them and keep the sun off (2)……………………… . When leaves fall from a tree, they make the land richer. When the trees gone, the smaller plants die, and the land becomes desert.
Humans can make deserts, but humans can also (3)…………. their growth. Algeria planted a green wall of trees across the edge of the Sahara to stop the desert sand from (4)……………… . Mauritania planted a similar wall around its (5)………….. . Iran puts a thin covering of petroleum on sandy areas and plant trees. Other countries build long (6)…..………. to bring water to the desert areas.

Unit 9: Deserts – Listening – Task 3: Gap filling
90 percent
smaller plants
prevent
spreading
capital
canals



Group work: Summarise the main ideas of the expert’s talk

Unit 9: Deserts – Listening – After Listening


Do exercise 2 – page 60, 61 inn the sts’ book.