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At school, we should
collect waste paper.
collect waste cans.
…
reduce the waste we produce.
What should we do at school to protect the environment?
Would you like to be a greener person? If so, what should you do?
=We ought to sort the garbage
ought to=should 应该
ought to +动词原形
We should sort the garbage.
If you want to be a greener person, what should you do?
shut off the electricity
n.电，电能
关闭
We should / ought to shut off the electricity when we leave a room.
We waste the electricity.
shouldn’t
oughtn’t to
We should / ought to take a cloth bag when we go shopping.
织物，布料
If you travel a short distance, what should you do?
A:Would you like to be a greener person ?
B: Of course, I’d love to.
B: I should /ought to …
I shouldn’t / oughtn’t to…
A: If you travel a short distance,
How should you travel?
1b Listen to 1a and choose the correct answers.
1.Jane and Michael are mainly talking about _______.