Unit 7 Protect the Earth Period 4 课件（共32张PPT）

(共32张PPT)
Unit 7 Protect the earth
Period 4
now
many years ago
The earth is our home.
Let’s protect the Earth. Let’s save our home.
？
？
？
？
Water is useful!
water
reuse
waste
What can we do with
water
coal
oil
wood
Plastic
...
We use to run our cars.
We use to wash clothes.
？
？
？
energy
drive
？
？
trees
cut down
？
t
paper
plastic


We should...

save water，save energy，save trees...
We shouldn't ...
use too much plastic
cut down too many trees
waste water...
What should we do?
What should they not do?
（完成课本76页）
He should not _______ in the restaurant.
They should not _______ in the park.
They should not _______ ______________.
They should not _______ __________in the river.
smoke
litter
cut down
too many trees
put
rubbish
What should they not do?
They should not _______ in the library.
They should not _______ __________________.
talk
use
too many plastic bags
Tips: should 和 should not后面加动词原形。
What should they not do?
游戏规则：每人抽取一张卡片，按卡片内容用We should … 造一句倡议口号。

如果口号正确，其他同学说“Yes,Yes,Yes! We should…”,抽卡片者则成为合格志愿者，得到志愿者标签一枚，课后可凭标签加入志愿者QQ群哦！

如果错误，则说“No,No,No! We should not…”

（成为志愿者吧！）
We should save water ,
We should not waste water !

We should save trees ,
We should not cut down trees !

We should save energy，
We should not drive so much！

We should protect the earth，
We should not use too much plastic！
Dear human beings:
The Earth is our home. We
should try our best to protect it .
To protect the Earth, we should
To protect the Earth, we should not
Yours sincerely
检测反馈：阅读短文，判断正“T”误“F”
We have only one Earth. We get land(土地)，air and water from the earth. We should take care of these things. We should keep them clean.
Farmers grow food on land. Food from dirty land is bad for us. We should keep the land clean. We cannot build too many houses. There is not much land on Earth for farming. We should save land.
We all need water. We cannot live without water. We drink it and use it to do many things. But there is not much water in many places. In some places, dirty water from factories pollutes(污染) the rivers. Some people waste water.
We should take care of the air too. We need clean air to live.
( T ) 1. There is only one Earth.
( T ) 2. We should keep the land, the air and the water clean.
( F) 3. We should not use land.
( T) 4. People have dirty water in some places.
( T ) 5. This passage(文章) is about how to protect the earth.
设计一个节日，让更多的人知道要保护地球！
No Plastic Day
It’s on 8th October.
We use plastic to make bags and bottles, but too much plastic is bad for the Earth.
We should not use too many plastic bags or bottles.
We should use paper bags and glass bottles.
Why?
No Plastic Day
It’s on 8th October.
We use plastic to make bags and bottles, but too much plastic is bad for the Earth.
We should not use too many plastic bags or bottles.
We should use paper bags and glass bottles.
Why?
No Plastic Day
It’s on 8th October.
We use plastic to make bags and bottles, but too much plastic is bad for the Earth.
We should not use too many plastic bags or bottles.
We should use paper bags and glass bottles.
Why?
How?
No Plastic Day
It’s on 8th October.
We use plastic to make bags and bottles, but too much plastic is bad for the Earth.
We should not use too many plastic bags or bottles.
We should use paper bags and glass bottles.
Why?
How?
The Earth is our home .
We should protect it.