初中英语沪教牛津版（2024）七年级下册（2024）Unit 5 Water is lifeSection 1图文课件ppt

这是一份初中英语沪教牛津版（2024）七年级下册（2024）Unit 5 Water is lifeSection 1图文课件ppt，共16页。PPT课件主要包含了目录页标题，a few days， to 3，percent等内容，欢迎下载使用。
Learning bjectives
通过本课时学习，学生能够：1. 通过听力获取与水相关的信息和数据，并积累相关语言知识。2. 理解语篇中列数字的作用。3. 能够运用所学知识谈论地球上的水资源情况，水的重要性和节约用水的方法。4. 了解目前水资源存在的危机，进一步讨论如何保护和节约水资源，增强爱护水源，拒绝浪费的节水意识。
Water cvers abut ____ f the Earth’s surface.A. 1/4 B. 1/2 C. 3/4

Water cvers abut 70% f the Earth’s surface. Why d peple suffer water shrtage?
Althugh water cvers abut 70% f the Earth’s surface, mst f it is salt water, which is undrinkable. Only 3% f Earth’s water is fresh water and mst f it is in the glacier r the permafrst layer (永久冻土层). Peple can use less than 1% f fresh water as drinking water.
Let’s find ut mre facts abut water!
1. ________________________ 2. ________________________ 3. ________________________
The water n Earth
The water in the human bdy
Ways t save water
Listen t a pdcast abut water and write dwn the tpics mentined in it.
wash clthes and take baths
half a percent / zer pint five percent
What can peple d t save water?
They can have a quick shwer instead f taking a bath. They can turn ff the tap when they brush their teeth as well!
Why des the speaker use s many numbers in the text?
1. T make the infrmatin mre trustwrthy and scientific.2. T help explain cmplicated ideas with clear numbers and make it easy fr peple t understand hw small actins can make a big difference.
Gd evening and welcme t this week’s episde f The Natural Wrld. I’m Rebecca. Tnight we will be talking abut water.Abut 70% f the Earth’s surface is water. Hwever, abut 97% f the water n Earth is salt water. Salt water is nt drinkable. Only abut 3% f the water n ur planet is fresh water, but mst f it is ice. S, hw much f the water can we use as drinking water? Only abut half a percent! And in many places, clean and safe drinking water is nt easy t find.Why is water s imprtant? Well, mst f the human bdy is water: arund 60% in an average adult man. There is mre water in sme parts f the bdy. Fr example, abut 75% f the brain is water. Peple can live fr several weeks withut fd, but nly fr a few days withut water. Human beings need arund tw t three litres f water per day. Athletes usually need mre water. When it is ht utside, peple need mre water t. But peple use a lt mre water fr ther things, such as washing clthes and taking baths. There are many ways t save water. Having a bath can waste a lt f water, s it’s better t have a quick shwer. Als, remember t turn ff the tap when yu brush yur teeth. That way, yu can save ver a hundred litres f water in a week!
Talk in grups
Q1: Why shuld we save water?
Only abut 3% f the water n ur planet is fresh water. We can nly use abut 0.5% f the water as drinking water.
There is t little fresh water. Abut 70% f the Earth’s surface is water. Hwever, abut 97% f the water n Earth is salt water. Salt water is undrinkable.
Q2: Why is water s imprtant fr humans?
Mst f the human bdy is water...
Q3: Hw can we save water in ur daily life?
It’s better t...
Remember t...
Lk and talk
water pllutin
peple waste water
water shrtage
What is happening t the water n Earth nw?
Can yu think f mre ways t save water?
use leftver water t water plants
cllect rainwater and reuse it
fix the leaky tap in time
use wrds and expressins abut water crrectly.
enhance my awareness f saving water thrugh listening and discussin.
listen effectively and get infrmatin abut water.
After learning this lessn, I can
1. Listen t the recrding again and try t retell. 2. Make five cmplete sentences abut hw t save water.