(
课件网) 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 w ... ...
