仁爱版八年级英语上册 Unit 4 Topic 1 Section C 课件(共23张PPT).ppt

1、Topic 1 Whats the strongest animal on the farm?Free TalkA：Do you like living in the countryside or the city?B:I like living in the.A:Why?B:Because.Studying Aims 学习掌握重点短语和句子。继续学习形容词比较级和最高级的用法。能描述自然资源的现状，增强保护环境的意识。Watch the flash of 1a,and find out the answers.What can rainforests give us?视频1a-P851afo

2、restthick,darkwetThey provide places to live for thousands of plants and animals found nowhere else on Earth.hotforestrain 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

3、 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

4、出下列问题的答案。1.What can we get from rainforests?2.Why are rainforests important to us?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 pl

5、ay 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

6、smaller and smaller,so we should protect them.wood n.木头，木材；Rainforests give us rubber rubber nn.橡胶橡胶foodmedicinefruitsListen to 1a and complete the table.Then check with your partner.Feature of rainforests1.in the _ parts of the world2._ ground and always _ and _ in them3.cover _ of the earths _ 4.g

7、ive a home to many beautiful _ and _Importance of rainforests1.make the air _ and _ 2._ the water and keep the water_3.control the _ 4.keep the beauty of _ 5.give us _,_,fruit,_ and so onhotwetdarkhot6%surfaceplantsanimalsfreshercleanerholdcyclingclimate naturewoodfoodmedicine1b录音1a-P851cRead again

8、and answer the questions.1.What does the word“cover”mean in Paragraph 1?2.Why are rainforests the lungs of the earth?3.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

9、 cycling.They play an important part in controlling the climate.1cRead 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 n

10、ext.5.What should we do to protect rainforests?We should save paper and mustnt use the chopsticks for only once.1.Rainforests Rainforests covercover 6%of the earths 6%of the earths surface surface.six percentsix percent数词%+可数名词复数谓动用复数可数名词单数/不可数名词谓动用单数Eg:50%of the students in our class are boys.70%of

11、 the earth is water.Thousands and thousands ofanimals 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 ofmillions ofKey points考点：“两有两无”But now rainforests are becoming smaller and smaller.越来越小“形容词比较级形容词比较级+and+and+形容词比较级形容词比较级”或或“more and more+more and more+多音节形容词原级多音节形容词原级”e.g.e.g.天气变得越来越暖和了。天气

12、变得越来越暖和了。The weather gets warmer and warmer.中国越来越美丽。中国越来越美丽。China is China is more and moremore and more beautiful.beautiful.Key pointsPlay an important part in sth.doing sth.在（做某事）方面起重要作用他们在控制气候方面起重要作用。They play an important part in controlling the climate.她积极参与班级活动。She plays an active part in clas

13、s activities.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 oncenot cut downuse less paper and be sure not to waste it.plant more trees You can

14、write like this: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 meal

15、s,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

16、 part(in sth.)smaller and smaller 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 4、smaller and smaller 越来越小5、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、hold the water保持水份keep the water cycling 保持水循环11、die out 灭绝(died dying)12、control the climate/weather 控制气候、天气13、in the woods 在树林中14、the lungs of the earth 地球之肺