仁爱版英语八年级上.ppt
Unit 4 Our World,Topic 1 Which do you like better,plants or animals?,Section C,Studying Aims,继续学习形容词比较级和最高级的用法。谈论地球上水资源和热带雨林的基本情况以及它们对于地球上生物的重要性。增强学生保护水资源和森林资源的意识。,Free Talk,A：Do you like living in the countryside or the city?B:I like living in the.A:Why?B:Because.,Watch the flash of 1a，know something about rainforests.,视频1a-P85,1a,速读课文第一段，找找答案,(3)Where do animals live in rainforests?,(1)What are rainforests?,(2)How many animals are living in the rainforest?,forest,thick,dark,wet,They provide places to live for thousands of plants and animals found nowhere else on Earth.,hot,forest,rain,Rainforests are thick forests in the hot part of the world.It rains a lot and ground is always dark and hot in rainforests.Rainforests cover 6%of the earths surface.They provide places to live for thousands of plants and animals found nowhere else on Earth.There are lots of tall trees and other different kinds of plants.Thousands and thousands of animals live in rainforests.Many of them live in the trees over 30 meters from the ground.,细读课文，找出第一段的Topic Sentence（中心句）。,阅读第二段，找出下列问题的答案。What can we get from rainforests?Why are rainforests important to us?,wood n.木头，木材；,Rainforests give us,rubber n.橡胶,food,medicine,fruits,找出中心句,Rainforests are important to us.They are the lungs of the earth.The plants in the forests help to make the air fresher and cleaner.They also help to hold the water when it rains and keep the water cycling.They play an important part in controlling the climate.Rainforests also help keep the beauty of nature.Without rainforests,many beautiful plants and animals would die out.Rainforest give us wood,food,medicine and many more useful things.We need rainforests for many reasons.But now,rainforests are becoming smaller and smaller,so we should protect them.,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 are rainforests the lungs of the earth?Why should we protect rainforests well?,It means“覆盖”.,Because the plants in the forests help to make the air fresher and cleaner.,Because they help to hold the water and keep the water cycling.They play an important part in controlling the climate.,1c,Read again and answer the questions.,4.Can you guess what the next part of the passage will talk about?,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.,5.What should we do to protect 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.,Thousands and thousands of animals live in rainforests.,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,Key points,But now rainforests are becoming smaller and smaller.,越来越小,“形容词比较级+and+形容词比较级”或“more and more+多音节形容词原级”e.g.天气变得越来越暖和了。,The weather gets warmer and warmer.,中国越来越美丽。,China is more and more beautiful.,Key points,Group work,Discuss the pictures in groups about how to protect rainforests.Then write a short passage.,How to protect rainforests？,show and tell people about importance of protecting them,not use chopsticks for only once,not cut down,use less paper and be sure not to waste it.,plant more trees,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 importance 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 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,1、thick forests/hair/smoke 茂密的森林/头发/烟雾2、provide places to live 提供住的地方/provide sth to sb provide sb with sth3、thousands of 数以千计的 tens and hundreds of two thousand sheep/goats5、nowhere else 没有别的地方 6、on earth 在地球上/到底 究竟7、different/all kinds of 不同(各）种类的8,play an important part in doing sth 在。方面起重要作用9、many/some of them 它们中的许多/一些10、live in the trees 30 meters form the ground 住在距离地面30米的树上12、hold the water保持水份 keep the water cycling 保持水循环13、die out 灭绝(died dying)14，control the climate/weather 控制气候、天气15，in the woods 在树林中 16，the lungs of the earth 地球之肺,Thank you!,
