Bài giảng Tiếng Anh Lớp 11 - Unit 11: Sources of energy - Lesson: Speaking

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 built a dam for hydroelectricity. 
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Task 2: Work in pairs. Talk with your friend about the advantages and disadvantages of using each alternative sources of energy , using the suggestions from Task 1. 
 Why do you think so? 
 I think that wind power can be an alternative source of energy....... 
Some suggestions to express advantages and disadvantages . 
Asking for your opinions 
What do you think about? 
What is your opinion? 
What do you mean that? 
Why do you think so? 
How do you feel about? 
Expressing opinions 
I think/ believe/ feel  
In my opinion  
According to  
It meant that  
Express agreements 
I agree/ think so 
That’s right/ true  
It’s a good idea  
Express disagreements 
I don’t think/ I don’t agree/ I disagree  
Well, It’s not true/ right but  
Sources of 
energy 
Advantages 
Disadvantages 
Nuclear 
energy 
Geothermal 
heat 
Solar energy 
Wind power 
Water power 
It is available 
It can be dangerous 
It is unlimited 
It is not only plentiful 
and infinite but also 
 clean and safe 
It is clean 
and unlimited 
It is clean and 
unlimited 
It is only available in 
some places 
It is only possible 
during the day time 
If the wind doenn’t 
blow,there is no 
wind no energy. 
It is expensive to 
built a dam 
for hydroelectricity 
A: I think that can be an alternative sources 
 of energy. 
B: Why do you think so? 
A: Because our major sources of energy are running out while 
Example : 
wind power 
 (1) 
the wind is abundant and unlimited. 	 (2)	 
it is also clean and safe to the environment. 
	(3) 
it is not available when there is no wind. 
 (4) 
However, 
B: I know 
A: I think that _______(1)___________ can be an alternative source of energy. 
B: Why do you think so? 
A: Because our major sources of energy are running out while __________(2)____________ . 
However, _________(4)_____________ . 
B: I know ___________(3)____________. 
(1): solar energy 
(2): solar energy is plentiful and infinite. 
(3): It is also clean and safe to the enviroment. 
(4): It is only possible during the day time. 
A: I think that solar energy can be an alternative sources 
 of energy. 
B: Why do you think so? 
A: Because our major sources of energy are running out while the solar energy is plentiful and infinite. 
However, it is only possible during the day time. 
B: I know it is also clean and safe to the environment. 
A: I think that _______(1)___________ can be an alternative source of energy. 
B: Why do you think so? 
A: Because our major sources of energy are running out while __________(2)____________ . 
B: However, _________(3)_____________ . 
(1): nuclear power 
(2): nuclear power is unlimited 
(3): It can be very dangerous. A nuclear reactor releases radiation which is harmful to the environment. 
A: I think that _______(1)___________ can be an alternative source of energy. 
B: Why do you think so? 
A: Because our major sources of energy are running out while __________(2)____________ . 
However, _________(4)_____________ . 
B: I know ___________(3)__________________ . 
(1): water power 
(2): water is unlimited 
(3): It also provides energy without pollution. 
(4): It is expensive to build a dam for hydroelectricity 
A: I think that _______(1)___________ can be an alternative source of energy. 
B: Why do you think so? 
A: Because our major sources of energy are running out while __________(2)____________ . 
However, _________(3)_____________ . 
B: 
(1): geothermal heat 
(2): this heat is available. 
(3): It is possible only in a few places in the world. 
thank you !