资源简介

(共31张PPT)
2024年牛津版
英语（七年级下）
Unit 5
Section 1 Listening and
Section 3 speaking
Water is life
课堂教学目的
1
2
新课导入
3
Content
课堂活动
5
课堂训练
6
课堂小结
4
课堂重难点
课堂教学目的
1
2
课堂重难点
训练学生在听的过程中记录关键信息的能力；帮助学生掌握辅音连缀的发音方法和拼读规则；帮助学生进一步了解水的一些有趣的事实。了解和讨论节约用水的方法。
文化意识
课堂重难点
思维品质
课堂教学目的
1.听前预测，捕捉信息。
2.谈论和思考如何节约用水。
提高学生对于人类生活中水重要性的意识，培养节约用水，保护自然的环保意识。
思考如何节约用水，并养成节约用水、绿色环保的良好习惯。
Listening
Please say something about water’s journey .
First, heat turns water into vapor (水蒸气).
Second, a gas (cloud) rises through the air.
First
Second
新课导入
3
Then, cold makes vapor change into liquid.
Finally, liquid becomes bigger and water drops fall back down to the Earth.
Why is water valuable for us.
We use water to do many other things. Without water, we can’t live.
What interesting facts do you know about water
water
About 70% of the earth's surface is water. 97% is salt water.
3% of the water on our planet is fresh water,
But about 1% of water is drinkable
1.Most of the human body is water.
2.Around 60% in an average adult man.
3.About 75% of the brain is water.
4.People can live for several weeks without food, but only for a few days without water.
Some interesting facts about water
Look and say
Water is valuable so we should save water and shouldn’t waste a drop of water.
You should turn off the tap when you brush your teeth.
We had better have a quick shower instead of a bath.
Match 22nd is World Water Saving Day. We should make everyone value water and raise their awareness of water saving. Save water, start with me
Save water, start with me
Water and us
新课活动
4
What interesting facts do you know about water
Think
water
About 70% of the earth's surface is water. 97% is salt water.
3% of the water on our planet is fresh water,
But about 1% of water is drinkable
1.Most of the human body is water.
2.Around 60% in an average adult man.
3.About 75% of the brain is water.
4.People can live for several weeks without food, but only for a few days without water.
bath /
take a bath
shower /
take a shower
undrinkable
drinkable
Look at the pictures and learn the words and phrase.
Listen to a podcast about water and write down the topics mentioned in it.
(1)_______________________________________________
(2)_______________________________________________
(3)_______________________________________________
The water on Earth
The water in the human body
Ways to save water
Listen again and complete the notes below.
Water and us
About (1)_____％ of
the Earth's surface is water. Only about
(2)_____% is fresh water and around
(3)_____％ is salt water.
We can only use about
(4)_____％ of the water
on Earth as drinking water.
For an adult man, around
⑸_______% of the body is water
and(6)_____% of the human
brain is water.
We could live for several weeks
without food, but only for
(7)____________without water.
People need about(8)________
litres of water each day.
We also use a lot of water when
we (9)______________________
70
3
97
0.5
60
75
a few days
2 to 3
wash clothes and take baths
Discuss in pairs how we can use water wisely.
Good evening and welcome to this week's episode of The Natural World. I'm Rebecca. Tonight we will be talking about water. About 70% of the earth's surface is water. However, about 97% of the water on earth is salt water. Salt water is not drinkable. Only about 3% of the water on our planet is fresh water, but most of it is ice. So, how much of the water can we use as drinking water Only about half a percent. And in many places, clean and safe drinking water is not easy to find. Why is water so important Well, most of the human body is water. Around 60% in an average adult man. There is more water in some parts of the body. For example, about 75% of the brain is water. People can live for several weeks without food, but only for a few days without water.
Human beings need around 2 to 3 litres of water per day. Athletes usually need more water. When it is hot outside, people need more water too. But people use a lot more water for other things such as washing clothes and taking baths. There are many ways to save water. Having a bath can waste a lot of water, so it's better to have a quick shower. Also, remember to turn off the tap when you brush your teeth. That way you can save over 100 litres of water in a week.
Speaking
How can we save water
Think
Talking about different ways of using water
Talk in groups about how we use water in different places. Look at the example and use the list below to help you.
Different uses of water
At home: drinking, cooking food, bathing and showering, washing
hands / dishes / clothes,...
At school: drinking, washing hands, doing experiments, gardening,...
In factories: cooling machines, making products,...
On farms: watering crops, providing water for animals,...
S1: Water is an important part of our lives. We use it for so many
things at home.
S2: You’re right. We need to drink enough water every day to stay
healthy.
S3: We also use water when we take a shower or bath.
S4: And we need water to cook food and to wash the dishes.
...
Listen and repeat. Pay attention to the letters in blue.
/ str / street strong / spl / splash split
/spr spread spring /skr/ scream screen
The strawberry plant in the garden looks strange, but the strawberries are
nice and sweet.
(2) Heavy rain splattered on the roof and splashed against the windows of the
splendid house.
(3) Spread the seeds around. In spring, you will have green sprouts as it rains.
(4) The screenwriter screamed when she spilt water on her script.
辅音连缀/str/、/spl/、/spr/、/skr/中，存在清辅音浊化的现象。在一些单词中，我们需要把/s/后面的清辅音发成它对应的浊辅音。如：
① /tr/—/dr/: street中s后的/tr/常发/dr/的音
② /p/—/b/: spring中s后的/p/常发/b/的音
③ /k/—/g/: screen中s后的/k/常发/g/的音
课堂小结
5
1.听取和了解关于水的一些有趣的事实。
2.掌握辅音连缀/str/，/spl/，/spr/和/skr/的发音方法和拼读规则
3. 学会和思考节约用水的方法。
课堂训练
6
一、根据汉语或首字母填空
1.We can get water easily from this (水龙头).
2.Clean water is not enough for (日常的)use during dry season in that area.
3.This water is clean and _________(可饮用的）.
4.Eighty ______(百分比） of the students in our class passed the math exam.
5. We should save water. There isn't much f______ water on Earth.
6. Clean the s_________ of the table before putting the food on it.
7. In cold regions, people often spread s______ on icy roads to melt the ice and improve driving safety.
8. She has a quick b_________ and can solve difficult math problems in no time.
9.You can choose to have a s______ instead of bath to save water.
10. We shouldn’t w____ food when so many people around the world are starving.
tap
everyday
drinkable
percent
fresh
surface
salt
brain
shower
waste
二、补全对话
A: Look! There is too much water on the ground. Where does it come from
B: Look! The tap is on. 1.___________________ .
A: OK. Water is important to us. 2.______________________ .
B: But how can we save it
A: We can’t spend a long time taking a bath.
B: Great! And we must turn off the tap while we are brushing our teeth.
A: That’s right. If the tap is on, we will waste lots of water.
B: There are many factories. They are polluting the water. 3._________________
A: We can tell them the importance of water and ask them to stop polluting the water.
B: 4.______________________________
A: At home we can reuse the water.
B: 5._____________________________
A: For example, we can use the water to water flowers after we wash vegetables.
B: I got it.
Let's turn it off　
We must save it
What can we do to stop them
What can we do at home
Can you give me an example
三、短文填词
I‘m Rebecca. Tonight, let’s talk about water. As we know, around 70% of the Earth‘s surface is 1.c_____ by water. But here’s the sad fact: about 97% of this water is salt water, which we can‘t 2.d______. Only 3% is fresh water. But the water for drinking is just about half a percent.
Water is super important. Nearly 60% of an average adult man's body is water. Some body parts have even more. For example, around 75% of the 3.b______ is water. People can survive for weeks without food, but only a few days without water. On average, we need 2 to 3 litres of water every day. To 4.s______ water, we can do simple things. Taking a 5.b______ uses a lot of water, so it's better to take a quick shower. Also, don't forget to turn off the tap when you 6.b______ your teeth. This small action can save over 100 litres of water in a week. Let's all start saving water now!
1.covered 2.drink 3.brain 4.save 5.bath 6.brush
4. 完成句子
1.地球表面70%被水覆盖，大约97%的水是盐水，只有大约3%是淡水。
70% of ______ ______ _______is _________ by water, about 97% of the water is salt water, and only about 3% is fresh water.
2.我们能用多少水作为饮用水.
______ ______ water can we use ______ ______
3.人们没有水仅能生活几天。
People can live only for _____ ______days ________ water.
4.盆浴会浪费很多水，所以最好快速淋浴。
_____ _____ _____can waste a lot of water, so ____ _____to have a quick shower.
5.我们需要每天喝足够的水来保持健康。
We _____ _____ _____ ______water every day to stay healthy.
the Earth's surface covered
How much drinking water
a few without
Having a bath it's better
need to drink enough

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