内容正文:
Unit 12 The Earth
The weather in different places on the Earth is the same. Some parts of the Earth are very hot, and some are very cold.
Different animals live in different places. Some live on the land. Some fly in the sky. Some live under the water.
People can get nothing from the Earth. The Earth gives us air, water and food.
People make the Earth dirty. People kill many animals on the Earth.
True or False.
forest
land
ocean
green part; brown part; blue part
What lives in the forests?
What lives on the land?
What lives under the water?
animals
plants
people
How is the Earth?
Why?
It is sick.
People cut down the forests. Many plants, wild animals, birds and insects live there. Now they have no homes.
People kill animals for food and their skins.
People are polluting the land, the water and the air.
How do we save the Earth?
Ask and answer
What should we do to save the Earth?
Put a tick or a cross in the box. Then talk about it in groups.
S1: What should we do to save the Earth?
S2: We should...
S3: We should...
S4: We should stop...
We shouldn't cut down so many trees.
We should stop cutting down so many trees.
We should plant more trees.
S1: What should we do to save the Earth?
S2: We should...
S3: We should...
S4: We should stop...
We shouldn't build more factories and houses.
We should stop building more factories and houses.
S1: What should we do to save the Earth?
S2: We should...
S3: We should...
S4: We should stop...
We should write on both sides of paper.
S1: What should we do to save the Earth?
S2: We should...
S3: We should...
S4: We should stop...
We shouldn't use more plastic bags and bottles.
We should stop using more plastic bags and bottles.
We should use shopping bags.
S1: What should we do to save the Earth?
S2: We should...
S3: We should...
S4: We should stop...
We shouldn't litter.
We should stop littering.
We should recycle litter.
S1: What should we do to save the Earth?
S2: We should...
S3: We should...
S4: We should stop...
We shouldn't throw rubbish into rivers.
We should stop throwing rubbish into rivers.
S1: What should we do to save the Earth?
S2: We should...
S3: We should...
S4: We should stop...
We shouldn't kill wild animals.
We should stop killing wild animals.
S1: What should we do to save the Earth?
S2: We should...
S3: We should...
S4: We should stop...
We should walk or ride a bike more often.
We must save the Earth.
People must stop cutting down forests.
People must stop killing animals.
People must stop polluting the air.
People must stop polluting the land.
People must stop polluting the sea.
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