资源简介

(共52张PPT)
Unit 5 Water is life
主题范畴：
人与自然
主题群：
环境保护
子主题：
环境污染及原因，环保意识和行为
Key question
What does water mean to us
understand the usefulness and importance of water.
identify some facts about water in daily life.
explore how to save water and use it wisely.
describe the relationship between water and the development of our society.
Unit objectives 单元目标
I can:
New words and phrases
everyday adj.每天的；日常的
form n.类型；种类
journey n.（尤指长途）旅行
drop n.滴；水珠
tap n.水龙头
voice n.说话声
eventually adv. 最后；终于
*pipe n. 管子；管道
return v. 回去；返回
rush v. 迅速移动
a bit 有点儿；稍微
at once 立即；马上
I am one of the natural elements.
I have no colour,
I have no smell,
I have no taste,
I have no shape,
I am very valuable,
Flowers and trees need me,
You need to drink me every day.
Lead-in
Guess: Who am I
Right!
I’m water!
First thoughts
Water
01 Things you know about water
About 70% of the Earth’s surface is water.
...
02 Importance of water
Life cannot exist without water.
...
03 Ways to save water
Take a shower instead of a bath.
...
Where does water come from
What interesting facts do you know about water
How can we save water
What is the relationship between water and the development of our society
Think
Pre-reading
Look at the picture of the water cycle below and put the sentences in the correct order. Then describe the picture to the class.
①______ ②______ ③______ ④______ ⑤______
A It runs into rivers.
B It rises from the sea to the sky.
C It runs into the sea.
D It falls as rain again.
E Water falls from the clouds as rain.
E
A
C
B
D
Discuss the questions below.
(1) Where can you find water in your everyday life
(2) What does water look like, and what form does it take
Water on Earth
Water covers 70 per cent (百分之……) of Earth’s surface (表面). There is a lot of water on Earth, but 97 per cent is from the sea. We can’t drink it because it’s too salty.
About 2 per cent of water is in icecaps (冰盖) and icebergs (冰山). People can only use 1 per cent of the world’s water.
Reading
Read the story about the journey of a drop of water.
The journey of a drop of water
Du Yun was in the bathroom. The tap was on. As she brushed her teeth, she thought about going swimming with her friends and ...
“Turn that tap off,” said an angry voice suddenly. “You’re wasting water.”
Du Yun turned the tap off and looked around, but there was no one there.
“Who are you ”
“I’m Dripple, and I’m a drop of water. Do you know where I come from ”
“From the tap ” asked Du Yun.
“Well, yes, but a few days ago, I was in a cloud,” said Dripple. “Then the wind pushed the cloud up a mountain. When the cloud cooled down, it started raining. I became one of the raindrops.”
“How did you come into my house then, Dripple ”
“I fell into a river and eventually ended up in a reservoir. Then I went to a special place. There, people cleaned me and added some chemicals to me.”
“They cleaned you Why ” Du Yun asked.
“Because I was a bit dirty. Then I travelled through the pipes under the streets and now I’m here,” Dripple explained.
“Again ”
“Yes. My journey back to the clouds starts there. Remember not to waste or pollute me. I’m valuable.”
“I’m sorry, Dripple!” Du Yun came out of the bathroom and rushed to her study. She wanted to tell her diary about this at once.
“So is this the end of your journey ” Du Yun asked.
“No. People will clean me one more time. Then I’ll go into a river, and after that, I’ll return into the sea again.”
Reading strategy
Understanding personification
Writers sometimes make animals or things seem human to make a story more interesting. In this story, the drop of water talks like a human being. This is called personification, and it helps the reader understand the writer’s ideas more easily.
Read the story again to see how the writer uses personification.
Task 1
Look at the plete Dripple’s journey with the information from the story on page 69.
ended up in a reservoir
went into a special place and got cleaned
travelled through the pipes under the streets
got to Du Yun’s home
Read line 1-4 and answer the question below.
Task 2
Why was Dripple angry at Du Yun
Du Yun was in the bathroom.The tap was on. As she brushed her teeth, she thought about going swimming with her friends and ...
“Turn that tap off,” said an angry voice suddenly. “You’re wasting water.”
Du Yun turned the tap off and looked around, but there was no one there.
Because the tap was on / she left the tap on.
Read line 5-10 and answer the question below.
How did Dripple fall down from the cloud
“Who are you ”
“I’m Dripple, and I’m a drop of water. Do you know where I come from ”
“From the tap ” asked Du Yun.
“Well, yes, but a few days ago, I was in a cloud,” said Dripple. “Then the wind pushed the cloud up a mountain. When the cloud cooled down, it started raining. I became one of the raindrops.”
When the wind pushed the cloud up a mountain, the cloud cooled down. Dripple turned into one of the raindrops. Then it fell down from the cloud.
Read line 11-15 and answer the question below.
What did people do with the water from the reservoir Why did they do so
“How did you come into my house then, Dripple ”
“I fell into a river and eventually ended up in a reservoir. Then I went to a special place. There, people cleaned me and added some chemicals to me.”
“They cleaned you Why ” Du Yun asked.
“Because I was a bit dirty. Then I travelled through the pipes under the streets and now I’m here,” Dripple explained.
They cleaned it and added some chemicals to it. Because the water was dirty.
Read line 16-22 and answer the question below.
What will happen when Dripple returns to the sea
“So is this the end of your journey ” Du Yun asked.
“No. People will clean me one more time. Then I’ll go into a river, and after that, I’ll return into the sea again.”
“Again ”
“Yes. My journey back to the clouds starts there. Remember not to waste or pollute me. I’m valuable.”
From there it will start its journey back to the clouds again.
Read line 20-24 and answer the question below.
Why did Dripple tell Du Yun not to waste or pollute water
“Again ”
“Yes. My journey back to the clouds starts there. Remember not to waste or pollute me. I’m valuable.”
“I’m sorry, Dripple!” Du Yun came out of the bathroom and rushed to her study. She wanted to tell her diary about this at once.
Because water is valuable.
a. Du Yun turned off the tap and came out of the bathroom.
_____
b. The dripple tells Du Yun that it will go back into the
sea again. It also reminds her that water is valuable. _____
c. The dripple tells Du Yun about its long journey from
the cloud to the tap. _____
d. The dripple tells Du Yun to turn the tap off. _____
e. Du Yun is brushing her teeth with the tap on. _____
5
2
4
3
1
Work in group. Rearrange the following sentences.
Task 3
Can you describe how water gets to your home Use the flow chart (流程图) and the words to help you.
Task 4
in a cloud
drops as rain into a river
runs into a reservoir
travels through pipes
tap
bathroom chemicals
cloud drop pipes
reservoir sea add ... to ...
travel through
First ... Then ...
After that ... Next ...
Finally ...
Group discussion
(1) Do you think water is valuable Why Discuss this with your classmates.
Task 5
Possible answer:
I think water is valuable because it takes time
and hard work / difficulty for water to travel from its natural sources to our homes. Besides, there is not enough fresh water for people and animals in the world.
Saving water at home
bathroom kitchen laundry room
(2) How will you save water in the future
In the bathroom
Install low-flow shower heads.
Take shorter showers.
(Showers kept under 5 minutes can save you about 15 gallons per shower.)
If you take a bath, fill the bathtub less than halfway. (You can save 10-15 gallons per bath.)
Turn the tap off when you are brushing your teeth and washing your hands.
Install a highly efficient flush toilet. ...
In the kitchen
Wash vegetables in a container, not under running water.
Use the dishwasher for full loads only. …
In the laundry room
Use the washing machine for full loads only. …
Vocabulary practice
The words and the phrase in italics are from the story on page 69. Choose the correct answers to complete the sentences.
(1) We usually get ______ from the taps in our bathroom and kitchen.
a water b gas c electricity
(2) If someone tells you to do something at once, you need to do it ______.
a right now b later c today
(3) A drop of water is ______ water.
a a lot of b very little c about two cups of
(4) People say “Have a good journey!” when you are going to ______.
a have a party at your house
b search for information on the internet
c travel from one place to another
(5) When you return home, you _____ home.
a leave b stay at c go back
Complete Du Yun’s diary entry with the words and the phrase in italics from Exercise 1. Change the form if necessary.
drop
tap
at once
journey
return
Notes
The journey of a drop of water
Du Yun was in the bathroom. The tap was on. As she brushed her teeth, she thought about going swimming with her friends and ...
“Turn that tap off,” said an angry voice suddenly. “You’re wasting water.”
Du Yun turned the tap off and looked around, but there was no one there.
“Who are you ”
“I’m Dripple, and I’m a drop of water. Do you know where I come from ”
“From the tap ” asked Du Yun.
考虑做某事
关闭某物
四下观望
一滴……
“Well, yes, but a few days ago, I was in a cloud,” said Dripple. “Then the wind pushed the cloud up a mountain. When the cloud cooled down, it started raining. I became one of the raindrops.”
“How did you come into my house then, Dripple ”
“I fell into a river and eventually ended up in a reservoir. Then I went to a special place. There, people cleaned me and added some chemicals to me.”
“They cleaned you Why ” Du Yun asked.
“Because I was a bit dirty. Then I travelled through the pipes under the streets and now I’m here,” Dripple explained.
冷却
落入……中
最后到了某地
将……加入……中
有点儿……
“Again ”
“Yes. My journey back to the clouds starts there. Remember not to waste or pollute me. I’m valuable.”
“I’m sorry, Dripple!” Du Yun came out of the bathroom and rushed to her study. She wanted to tell her diary about this at once.
“So is this the end of your journey ” Du Yun asked.
“No. People will clean me one more time. Then I’ll go into a river, and after that, I’ll return into the sea again.”
……的结尾
再一次
记得不要去做某事
The tap was on. 水龙头开着。
on在本句中为副词，意为“（煤气、电器、电源或水龙头等）开着”，其反义词是off。如：
电源通了。
The power is on.
电源关了。
The power is off.
be on
be off
请把下列句子翻译成中文。
1. The TV is still on.
电视机仍然开着。
2. The lights were all on.
灯都亮着。
3. Is the gas off
煤气关了吗？
“Turn that tap off,” said an angry voice suddenly.
“把水龙头关掉。”一个声音生气地说道。
① turn off = switch off
关掉（煤气、电器、电源或水龙头等）
turn on = switch on 打开（煤气、电器、电源或水龙头等）
当对象是名词时，既可以用turn sth off，也可以用turn off sth；当对象是代词时，代词只能放在中间，即turn it / them off。
须注意：
表示“打开或关上窗户或门等”要用open和close。
如：
关掉煤气
打开机器
打开它们
关门
turn the gas off
turn on the machine
turn them on
close the door
voice 一般指人的声音。 She has a beautiful voice.
sound 指自然界的任何声音。 That’s a strange sound.
noise 常指不悦耳、不和谐的嘈杂声和噪音。 Don’t make any noise!
② voice n. 嗓音；说话声
其近义词有sound和noise，三者的用法有所区别。
选用voice、sound或noise填空。
1. Can you hear the ________ from the room
2. They like talking with each other in a low ________ in class.
3. Can you keep quiet The ________ will make the baby cry.
4. The ________ from the office sounds like your mother’s.
voice
sound
voice
noise
add … to … 把……加入……
请在清水里加点盐。
Please add some salt to the water.
So is this the end of your journey
那么这就是你整个旅程的终点了吗？
the end of ……的结尾；……的尽头
end为可数名词，意为“末尾；结局”。如：
他把书放在桌边。
He put his book at the end of the desk.
你可以告诉我这部电影的结局吗？
Could you tell me the end of the film
end的常用搭配：
① at the end of 意为“在……的后期；在……的末端”，既可以指时间的后期，也可以指位置的末端。如：
在这条马路的尽头你会看到一个公交站。
At the end of the road, you can see a bus station.
② by the end of意为“在……之前；到……结束时”，只表示时间。
我们必须在这周前完成这项工作。
We must finish the work by the end of this week.
③ in the end意为“最后；终于”，可与at last，finally互换使用。
最后，我们到达了山顶。
In the end, we got to the mountain top.
根据中文意思完成句子。
1. 最后，他做完作业了。
____ ____ ____, he finished his homework.
2. 你可以告诉我这个故事的结局吗？
Could you tell me ____ ____ ____ the story
the end of
In the end
Remember not to waste or pollute me.
记住不要浪费我，也不要污染我。
① remember not to do sth 记得不要做某事
其肯定形式为remember to do sth，意为“记得要做某事”。
You must remember not to pollute the environment.
你必须记住不要污染环境。
1. 选择最佳答案。
( ) Remember _____ too much meat.
A. don’t eat B. not eat
C. not to eat D. to not eat
2. 根据中文意思完成句子。
我会记得把书还给你的。
I’ll _________ _____ _____ the book to you.
remember to return
C
I. 根据句意及所给单词的首字母写出所缺单词，注意其形式。
1. Hey! Lady! You d______ your money on the ground.
2. What a beautiful v______ you have! I’m sure you will
be a singer in the future.
3. Believe it or not, of all the water on Earth, only about
3% is f______ water.
4. A______ some sugar to the milk, please.
5. In big cities, all the tap water comes to your home
through the p______.
ipes
ropped
oice
resh
dd
II. 根据中文意思完成句子。
1. 灯还亮着，你走时没关灯吗？
The lights are still on. Didn’t you ____ ____ ____ when
you left
2. 你想在牛奶里加些糖吗？
Would you like ____ ____ ____ sugar ____ the milk
3. 记得下次上课别再迟到了。
_________ ___ ___ ___ late for class again next time.
4. 你知道我来自哪里吗？
Do you know where I ____ _____
come from
turn them off
to add some to
Remember not to be
Thank you!

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