oh
A. Oil
B. Coal
C. Electricity
D. Gas
E. Wind energy
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2
3
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Friday, February 13th, 2008
UNIT 11: SOURCES OF ENERGY

Friday, February 13th, 2008
UNIT 11: SOURCES OF ENERGY
B. SPEAKING
Task 1: Decide whether the statements are the advantages (A) or disadvantages (D) of various sources of energy.
1. Fossil fuels will be exhausted within a relatively short time. _______
2. Geothermal heat is available only in a few places in the world. _______
3. If the wind does not blow, there is no wind energy. _______
4. Water power provides energy without pollution. _______
5. A nuclear reactor releases radiation which is dangerous to the environment. _______
6. Solar energy is not only plentiful and unlimited but also clean and safe. _______
7. It is expensive to build a dam for hydroelectricity. ______
Friday, February 13th, 2008
UNIT 11: SOURCES OF ENERGY
B. SPEAKING
Useful language:
Enormous, plentiful, available, abundant
Clean and safe
Unlimited, renewable
Convenient
Cheap, simple devices/ technology
Dangerous
Expensive
Polluted
Limited, non-renewable
Harmful
Exhausted


Friday, February 13th, 2008
UNIT 11: SOURCES OF ENERGY
B. SPEAKING
Task 2: Talk with a friend about the advantages and disadvantages of using each alternative source of energy, using the suggestions in Task 1.
Student A: Give your suggestion of an alternative source of energy. (I think/believe that....can be an alternative source of energy.)
Student B: Ask A for the reason. (Why do you think/believe so?)
Student A: Explain why. (Because our major sources of energy… while the….is … .)
Student B: Agrees with A. Give the disadvantage of the suggested alternative source of energy. (I know it is also… However,… .)
Wind power/ an alternative source of energy
Why/ think so?
Friday, February 13th, 2008
UNIT 11: SOURCES OF ENERGY
B. SPEAKING
solar power/ an alternative source of energy
Why/ think so?
Friday, February 13th, 2008
UNIT 11: SOURCES OF ENERGY
B. SPEAKING
Friday, February 13th, 2008
UNIT 11: SOURCES OF ENERGY
B. SPEAKING
Friday, February 13th, 2008
UNIT 11: SOURCES OF ENERGY
B. SPEAKING
Friday, February 13th, 2008
UNIT 11: SOURCES OF ENERGY
B. SPEAKING
Task 3: Work in groups. Make a conversation to express your belief on the increasing use of alternative sources in the future, using the idiea from Task 2.
Student A: Give your suggestion of an alternative source of energy. (I think/believe that more and more people will use… as a source of energy in the future.)
Student B: Ask A for the reason. (Why do you think/believe so?)
Student A: Explain the reason. (Because it is unlimited…… .)
Student C: Say the disadvantage of that source. (But it is expensive and only available during…. .)
Student D: Express his own opinion. (I hope the progress of science and technology will help overcome this problem…. .)
Wednesday, February 20th, 2008
UNIT 11: SOURCES OF ENERGY
B. SPEAKING
Friday, February 13th, 2008
UNIT 11: SOURCES OF ENERGY
B. SPEAKING
Homework:
Learn the words by heart
Practise the dialogues again at home.
Prepare for the next lesson: C.LISTENING page 128 - 129 for the next class