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清华版五年级下册《UNIT 3 THE ENVIRONMENT AND US Lesson 17》优秀教学课件
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Lesson 17 Water
Wangshan
I am a home for the fish.
I am rain for the earth.
I am a drink for people.
I am ice, snow, pools, puddles.
I am river, lake, pond, sea and ocean.
Who am I?
Can you guess?
water
Water is very _____ on the earth.
70%
50%
90%
How much water is there on the earth?
large
Read silently about para.1 and ask some questions.
Where
Who
How much
What
How many
Why
1. How many kinds of water are there on the earth? What are they?