3. SPEAK
a) Look at the expression in the tables and pictures. Make suggestion about how to save energy.
(Nhìn vào các diễn đạt trong bảng và các bức tranh. Đưa ra đề nghị về cách tiết kiệm năng lượng.)
Example:
A. I think we should turn off the faucet.
    I suggest fixing the faucet.

Suggestion	Response
I suggest + V-ing... I think we should ... Shall we ...? Why don’t we...? How about + V-ing ...? What about + V-ing ...? Let’s ...	OK. That's a good idea. All right. No. I don't want to. I prefer to... Let's...

Trả lời:
A. I think we should turn off the faucet. I suggest fixing the faucet.
B. I suggest turn off the electric oven/ cooker. I suggest repairing the cooker. It may be broken.
C. Why don't we switch off the fan? Shall we have an electrician mend the fan?
D. I think we should turn off the air conditioner.
E. Let's switch off the lights and the TV.
F. I suggest fixing the faucet in the bathroom.
G. I think we should use bikes instead of motorbikes.
H. Why don't we use the public buses?
b) Work in a group of four. Work out an action plan to save energy for your class. The expression and ideas in section 
(Làm việc trong một nhóm bốn bạn. Lập một chương trình hành động tiết kiệm năng lượng cho lớp của bạn. Các cách diễn đạt và ý tưởng ở phần a) có thể giúp bạn.)
Example: 
A: I think we should take a shower instead of a bath to save energy.
B: That's a good idea.
C: How about making poster on energy saving and hanging them around our school?
D: Great! Let's do that.
Trả lời:
A: I think we should take a shower instead of a bath to save energy.
B: That's a good idea.
C: How about making poster on energy saving and hanging them around our school?
D: Great! Let's do that.
E: I think we should use energy - saving light bulbs for ordinary bulbs.
F: That's a good idea.
G: How about turning off the lights and other electric tools when we don't use them?
H: OK. Let's do it.