外研版高中英语必修二《Earth first》PPT教学课件，共19页。
Look at the pictures and answer the questions.
Could you please describe the phenomenon of this picture?
There's too much garbage.
Throw all kinds of garbage around.
There is no garbage classification.
How to a letter?
写信人地址Addresser's Address
日期Date
收信人地址Receiver's Address
称呼Salutation
标题/事由Subject / Re
Work in groups and finish the blanks.
Problem: food is wasted
Cause(s):many people lack the awareness of saving food
Solution(s):1 Do not order more than you need.
2 Order less and take leftover food.
3 Call on people to join the campaign.
Useful expressions
Writing this ... is to raise your awareness
We recommeded that…
Different peole have different opinions...
In order to ... , we should…
Work in groups. Talk about it.
1.Say what book you want to recommend.
2.Give a description of it.
3.State the reason that you want to recommend it.
... ... ...
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