内容正文:
Unit 4
Planting trees is good for us
Part C & part D
Review
plant trees
Let’s read
Review
keep us cool
Review
make the place beautiful
Review
keep the air clean
Lead in
So, planting trees is good for us.
What should we do?
Planting trees is good for us. We should plant more trees.
more
更多的
Presentation
I will plant trees.
I like trees with flowers.
7
I will water the young trees every day.
We should look after them. Soon they will become big trees.
Presentation
water
浇水
look after
照顾
become
成为
Presentation
Think and say
So what can we do to look after trees?
water
trim
fertilize
keep warm
transfuse
Presentation
But, sometimes people cut down(砍下) many trees. Why ?
cut down(砍下)
I cut down trees, so I can get many woods, then I will have money.
Presentation
The trees are cut down, and we get a lot of woods, and more land. Why do people need the wood and more land?
Look and guess
People need more houses, so they get more _______
from trees. By cutting trees, people get more _______,So they can build high buildings and ________ grains(粮食) and vegetables to eat.
woods
land
grow
D Let's Read
Presentation
Listen and read.
People cut down trees! Why do people cut down trees? Because we want more houses, roads and buildings. Farmers also need more land to grow rice and vegetables. But the weather is changing. It's getting hotter. What can we do? We need to plant more trees. Trees help to make the air cool and fresh. Let’s plant more trees to make the Earth clean and green.
D Let's Read
Presentation
Let’s read the passage, and fill the blanks.
People cut down trees, because we want _____________,_________and ___________. Farmers also need more land to _____________ and _________________.
more houses
roads
buildings
grow rice
vegetables
D Let's Read
Presentation
Read and tick
What happened after cutting more tress?
A. People need more land.
B. It’s getting hotter.
C. The air getting fresh.
D Let's Read
Presentation
Read and answer
Because trees help to make the air clean and fresh
and make the Earth clean and green.
. What can we do? Why should we do that?
We need to plant more trees.
1. We want more houses because there are more people.
2. The Earth is getting hotter and hotter.
People cut down trees to make more roads.
There are more and more roads because
there are more and more cars.
5. Farmers need the land to grow food.People need to eat food.
6. Trees will help to make the Earth a better place.
D Let's Read
Presentation
Tick, if you agree.
D Let's Read
Production
Let’s retell
Reasons of cutting down trees
Consequences
(后果) of cutting down trees
Solution (解决方案)
Functions
(功能)of trees
Want more houses, roads and buildings
Need more land to grow rice and vegetables
The weather is changing. It's getting hotter.
Plant more
trees
make the air cool and fresh.
make the Earth clean and green.
Production
Think and write
Trees are good for us, there are many good points to plant trees. Trees can ____________________, ____________________ and _____________________________. We can do many things to protect(保护) trees. We can ______________, _______________ and ____________________________. If we all do these , there will be a good place.
Extension
Extension
China has the largest plantation area in the world. What did we do?
Plant trees on stone hill
Wuxi in Chongqing
20
Extension
Plant trees on beach
21
Extension
Plant trees on Gobi Desert
22
Extension
Are you willing to add a new leaf to China's green miracle?
Wuwei in Gansu
Shijiazhuang in Hebei
Summary
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Other
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