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(共16张PPT)
Unit5
Water is life
沪教版新教材初中英语七年级下册
Lead-in
A guessing game
I am important to all living things.
I have no colour , no smell or no taste.
I can be very hot or very cold.
I have three forms(形态）.
You need me every day.
What am I
Right! I am water!
Lead-in
How much do you know about water
Try the short quiz below
Task 1
1.We can live without water for a few _____ .
a. hours b. days c.weeks
2.Water covers about ____% of the Earth.
a.30 b. 50 c.70
3. About ____ % of the water on Earth is fresh water.
a. 20 b. 10 c. 3
4. About ____ % of the human body is water.
a. 70 b. 50 c.40
Water facts
Let’s have a quiz
What do you think of water
Water is ________________________ .
Where do you think water comes from
I think water comes from ________________________.
useful / important /valuable
the river / the sea / the tap ...
About 70% of the Earth’s surface is water. However, about 97% of the water on Earth is salt water. It is not drinkable. Only about 3% of the water on Earth is fresh water, but most of it is ice. So, we can only use 0.5% as drinking water .
Task 1
Water facts
Where does water come from
The picture shows the water cycle and mark some important parts.
clouds
mountains
fall
rivers
rise
trees
Task 2
Let’s describe
Look at the picture and put the sentences in the correct order(1—5).
2
5
4
3
Task 2
Where does water come from
Describe the water cycle according to the picture and the sentences.
2
5
4
3
The picture shows the water cycle.
First, the water falls from the clouds as rain.
Then ...
After that ...
Next ...
Finally ...
These words make your sentences more logical.
Task 2
Where does water come from
Task 3
Let’s talk
the uses of water
water plants
cook meals
wash clothes
wash hands
water crops
take a shower
drink
brush teeth
What do we use water for We use water for drinking.
What do we use water for
at school
at home
On the farm
…
wash hands
cook meals
take a shower
wash clothes
drink
water crops(作物）
…
Where do we use water
Task 3
Let’s talk
the uses of water
S1: Water is so important in our daily lives. We use it for so many things .
S2: You are right. We __________________.
S3: We also __________________.
S4: And we __________________
S5: …
水的用途
水的用途
水的用途
Task 3
Let’s talk
the uses of water
We use water for cooking meals.
We use water to cook meals.
Task 4
Let’s discuss
water-saving tips
Water is so important, but it’s not endless(无穷尽的). so we should use it wisely.
Discuss: How can we save water in our daily lives
take quick showers
turn off the tap when brushing teeth
We can…
We can…
reuse water （重复使用水）
fix dripping taps(修理滴水龙头)
Task 4
Let’s discuss
water-saving tips
We should…
We should…
We should.... We should also…
We can.... We can also…
take quick showers,
turn off the taps when brushing teeth,
reuse water
turn off the taps after washing hands
fix dripping taps
water-saving tips
Let’s write
Task 4
Water-saving tips
We all need water in our daily lives, so we
should not waste water. There are many
Ways to save water.
At home
·_________________________________
· _________________________________
At school
·__________________________________
·__________________________________
We can make a big difference if we start today!
Water is life
Homework
基础作业
1. 整理复习本节课的笔记。
2. 针对水的用途和节水建议各写至少3-5个句子。
拓展作业
以“Save water”为主题，制作一份宣传海报。

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