高一英语教案：Unit13 The water planet(第一课时)思维导图
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高一英语人教版第二册上：Unit13 The water planet(第一课时)
Unit 13 The water planet
Ⅰ.Brief Statements Based on the Unit
As we all know,the earth is an ocean planet and 99% percent of the living space on earth is in the oceans.It is water that makes the ocean such a great place to live in.This unit mainly deals with the properties of water and how the properties of water make the ocean become so important.We learn this unit to help students not only know about the properties of water,but also learn how to use water in a good way.Besides,we learn this unit to let students realize the importance of protecting water.Of course,it is necessary for students to master the important phrases and sentences in the unit.Meanwhile we should review some important usage of Modal Verbs.
Ⅱ.Teaching Goals
1.Talk about water and the ocean.
2.Practise communicative skills.
3.Review Modal Verbs.
4.Write an explanation paragraph.
Ⅲ.Background Information
1.What Lies under the Blue Water?
Just like the houses we live in,the ocean has several "floors" or layers.Different fish live on different layers and are neighbours,though not always friendly ones!
The ocean’s top layer is the sunlit zone(透光层).It goes down to around 200 meters below water.This layer is warm and bright.It is also home to most plants and fish.Many fish in this layer are streamlined,so they can quickly swim from danger and catch food.
The twilight zone(弱光层) is the next layer and is from about 200 to 600 meters below water.Almost no plants grow here.
Many animals in this zone swim up to the surface at night to feed,and move into deeper waters during the day.They also eat each other,so many of them have sharp teeth and very big mouths.
Many fish in this zone don’t have a streamlined body because they lie and wait for prey to come to them.
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