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1、Unit 4 Our World,Topic 1 Whats the strongest animal on the farm?,Section C,earth n.地球；土，泥；大地,rainforest n.(热带)雨林,forest n.森林,Look and learn,Look and guess!,Look at the pictures and check which questions the passage can answer.,What are rainforests?How many animals are living in rainforests?Where do
2、animals live in rainforests?What can we get from rainforests?Why are rainforests important to us?,Watch the flash of 1a,and find out the answers.,What can rainforests give us?,视频1a-P85,1a,wood n.木头，木材；woods 树木，森林,Rainforests give us,rubber n.橡胶,Rainforests give us,food,medicine,Rainforests give us,f
3、ruits,Rainforests give us,Listen to 1a and complete the table.Then check with your partner.,hot,wet,dark,hot,6%,surface,plants,animals,fresher,cleaner,hold,cycling,climate,nature,wood,food,medicine,1b,录音1a-P85,1c,Read again and answer the questions.,What does the word“cover”mean in Paragraph 1?Why a
4、re rainforests the lungs of the earth?,It means“覆盖”.,Because the plants in the forests help to make the air fresher and cleaner.,1c,Read again and answer the questions.,3.Why should we protect rainforests well?4.Can you guess what the next part of the passage will talk about?,Because they help to ho
5、ld the water and keep the water cycling.They play an important part in controlling the climate.,Yes.The next part may talk about what we should do to protect rainforests.,The last sentence in a paragraph may tell you what comes next.,1c,Read again and answer the questions.,5.What should we do to pro
6、tect rainforests?,We should save paper and mustnt use the chopsticks for only once.,Rainforests cover 6%of the earths surface.,six percent,Key points,数词%+,可数名词复数,可数名词单数/不可数名词,Eg:50%of the students in our class are boys.70%of the earth is water.,成千上万的,成百上千的成百万上千万的，数以百万计的,hundreds of,millions of,Thous
7、ands and thousands of animals live in rainforests.,3.Many of them live in the trees over 30 meters from the ground.over=more than 多于，超过 eg:Our class has _ 50 students.4.They play an important part in controlling the climate.play an important part(in sth.)在某事中起重要作用；参与（某事）Eg:他积极参加班级活动。He _ class activ
8、ities.,over/more than,plays an active part in,5.But now rainforests are becoming smaller and smaller.“形容词比较级+and+形容词比较级”越来越Eg.天气变得越来越暖和了。The weather gets warmer and warmer.中国变得越来越强大。China becomes stronger and stronger.,越来越小,Group work,Discuss the pictures in groups about how to protect rainforests.T
9、hen write a short passage.,show and tell people about,do anything we can，such as,ask people not to,ask people not to cut,Lets plant,You can write like this:,Example:,Rainforests are very important to us.It is necessary for us to protect them very well.First,we should make people know about the impor
10、tance of protecting them.Then ask people not to cut down the trees without plans.For us,we should do something as possible as we can.When we have meals,we mustnt use chopsticks for only once.In the life,use less paper and be sure not to waste it.,1.Learn to describe the situation of rainforests and
11、the importance to the earth.2.Talk about how to protect rainforests.3.useful phrases:thousands of control the climate over=more than play an important part(in sth.)smaller and smaller,summary,Homework,Make a survey among your classmates about how to save water in their family.Then report it to the class tomorrow.,Thank you!,
