英语外研版九年级上册Module 12 Save our world Unit 3.ppt

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1、Module 12,Module 12 Save our world,Unit 3Language in use,Reuse means “use again”.Though pollution is heavy now, I dont think its hopeless.,Language practice,Make a new words. Join the parts of words in Box A with the words in Box B. You need to use some of the parts more than once.,A able -ful im- -

2、less re- un-,B care collect hope possible use usual wanted waste,collectable, usable, careful, hopeful, useful, wasteful, impossible, careless, hopeless, useless, reuse, unusual, unwanted,Now work in groups. Play the guessing game English for Fun.,English for Fun,full of care _2. can be collected _3

3、. full of hope _4. without any hope _5. not possible _,careful,collectable,hopeful,hopeless,impossible,6. not usual _7. without any use _8. use again _9. not wanted _10. making a lot of waste _,unusual,useless,reuse,unwanted,wasteful,Sometimes if you know the meaning of the parts of a word, you can

4、work out the meaning of the whole word. re + new + able; re = again, able = can be renewable = can be new again,Learning to learn,1. 合成法 将两个或两个以上独立且语义不同的单词合在一起构成新词的方法叫做合成法。合成法是一种比较灵活的构词方法，可以合成名词、形容词、副词、代词、动词等。例如：afternoon, sportsman, blackboard, sportsperson, newspaper,构词法,airplane, classmate, grand

5、father 等就是通过合成构词法构成的名词；kind-hearted, middle-aged, hard-working 等为合成形容词；however, maybe, himself, everyone, nothing, overlook 等也都是通过合成法构成的单词。,2. 派生法 通过在词根前面加前缀或在词根后面加后缀构成一个新词的方法叫作派生法。要通过派生法理解和记忆单词, 我们需要掌握常见的前缀和后缀及派生规律。,(1) 常见前缀,(2) 常见后缀,(3) 派生规律由一个词根加上相应的词缀可以派生出名词、形容词、副词等，掌握派生规律对扩充词汇有很大帮助。例如：,由 intere

6、st 可以派生出： uninterestinginterest interesting interestingly interested uninterested,由 help 可以派生出： helpless helplesslyhelp helpful helpfully由 able 可以派生出： enableable unable ability disable,3. 转化法 英语构词法中把一种词性转化为另一种词性而词形不变的方法称作转化法。常见的转化有：(1) 动词转化为名词 Lets talk about it more. 咱们再谈谈这件事吧。 I think wed better f

7、inish the talk now. 我想我们最好现在结束谈话。,(2) 名词转化为动词 She gave me a cup of water. 她给了我一杯水。 You should water the flowers twice a day. 你应该每天给这些花浇两次水。,(3) 形容词转化为名词 She was wearing a black dress. 她穿着一条黑色的裙子。 The girl in black looks very beautiful. 那个穿黑衣服的女孩看上去很漂亮。,Complete the sentences with the words in the bo

8、x.,hopeful impossible reuse unhealthy wasteful,Polluted water is _.2. It is _ to throw so much food away.,unhealthy,wasteful,Exercises,3. If you look after things well, you may _ some of them later.4. It is _ to clean up the whole river in such a short time.5. If we pay attention to pollution now, t

9、he future will be _.,reuse,impossible,hopeful,Complete the table.,use,use,usefully/uselessly,hope,hopeful/hopeless,pollute,polluted/unpolluted,water,waste,wasteful/wasted,wastefully,usual/unusual,Complete the sentences with the correct form of the words in Activity 3.,She was hopeful that her new jo

10、b would make her more successful.,The factory _ the river, and the fish died.2. We often walk in the countryside. It is a(n) _ activity for us.,polluted,usual,3. Do not use so much water. It is very _.4. To keep the flowers growing, you need to _ them once a day.,wasteful,water,Complete the sentence

11、s.,A lunchbox is a box that you keep your lunch in.,A _ is a card that you write on one side of and send to someone by post.2. A _ is a room where you have classes at school.,postcard,classroom,3. A _ is a book that has one or more stories for children.4. A _ is a black board that is used at school

12、for writing on with chalk.,storybook,blackboard,Look at the pictures and answer the questions.,Work in pairs,What kinds of things can be recycled?2. How can these things be reused?3. How does this help the environment?4. Have you ever recycled or used things that can be recycled? How?,Complete the c

13、onversation with the correct form of the expressions in the box.,be good for throw away turn off worry about,Mike: I hear you are off to the Caribbean for a holiday! Lucky you! But arent you _ the pollution that such long plane journey may cause for the environment?Ken: I know, but what can I do abo

14、ut it? Ive already tried my best to protect the environment.,worried about,I recycle. I dont _ things if I dont want them any more. I _ the lights when I leave a room. Dont tell me I shouldnt travel by plane any more!,throw away,turn off,Mike: No, of course not. But we can do more to protect the env

15、ironment. For example, we can help keep the air clean by planting trees. Trees _ the environment. In this way, we can reduce the harm of pollution.,are good for,Ken: Good! So I can enjoy my holiday, and when I come back, Ill plant some trees!Mike: Thats the idea! Maybe we can all join in and start a

16、 small forest!,Listen and check () the true sentences. 1. It is OK to throw used things away. Looking after them takes a lot of time.2. Do not throw away things made of glass, plastic and paper, but recycle them when possible.3. Take a bag when you go shopping.,Listening,4. Producing electricity and

17、 using oil will not cause pollution.5. Turn off lights when you do not need them.6. Ride a bike or walk, and do not often drive your car.,Listen again and complete the table.,glass, plastic and paper,recycle,Reuse,take a bag,are hard to,reduce pollution,waste electricity,Walk or cycle,pollution,Arou

18、nd the world,Earth Hour,Read the passage and answer the questions.When is Earth Hour held each year?Earth Hour is held toward the end of March each year.Why do people switch off the lights during Earth Hour?They do this to show their awareness of climate change.,When and where was the first Earth Ho

19、ur held?The first Earth Hour was held in 2007 in Sydney.,Which city take part in the event today?More and more cities are taking part in the event, such as Beijing, London, Rome and New York.,Module task,Work in groups. Decide what kind of pollution you want to talk about.,Discussing what you can do

20、 about pollution,Choose a subject that you care about the most. It could be water pollution, air pollution, etc.Find out more information about your subject. Look it up on a website or in a book.,If you choose air pollution, lets watch a video about air pollution from a factory.,Do you know PM 2.5?

21、Lets know more about PM 2.5 and protect the environment from now.,Haze,Discuss your subject.,Discussion,Take turns to say what you think about the problem and what can be done.,Listen to what others say. If you agree with what they have said, say “I agree”. “Thats true” or “Thats a good point”; if you do not agree with what someone says, say “Im sorry, but I dont agree. I think that ”,Present your group ideas to the whole class.,Homework,Thank you!,