《The Earth》PPT下载
第一部分内容：Look and read
We should stop throwing rubbish into rivers.
We should stop cutting down so many trees.
We should stop using plastic bags.
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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《The Earth》PPT，第二部分内容：Answer the questions.
1 Why does the Earth get sick?
2 What do people do to keep the Earth clean and healthy?
Look and read
Earth Day
Earth Day is on 22nd April.
The first Earth Day was in 1970.
Earth Day is a great time to learn about our planet and how to take care of it!
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《The Earth》PPT，第三部分内容：THE VOWEL SOUNDS
THE SIMPLE SOUNDS
a big pig
a green bee
a bad dragon
a glass jar
a hot dog
a short horse
a funny sun
a dirty girl
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《The Earth》PPT，第四部分内容：Homework
1. Review Unit 12.
2. Review all the sounds.
3. Make a picture book about the Earth.
4. Finish Workbook pages 72 and 73.
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