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1、,Unit 3 Language in use,Module 12 Save our world,To summarize and consolidate the rules of word building,Objective:,Observe,Observe the following sentences carefully. They are all from this module.,1. Reuse means “use again”. 2. Though pollution is heavy now, I dont think its hopeless. 3. If the riv
2、ers are polluted, farmers cant use the water for their crops. 4. If everyone starts to do something, the world will be saved.,5. We all need a healthy environment, but we produce waste every day, and it is harmful to our environment. 6. Do not waste things. 7. Repeat these three words daily: reduce,
3、 reuse and recycle. 8. Before you buy something new, think whether it is really necessary because maybe old one is just as good! 9. but lets take these simple steps today so that we will save the world for our grandsons and granddaughters tomorrow.,1. _ (use) means “use again”. 2. Though _ (pollute)
4、 is heavy now, I dont think its _ (hope). 3. If the rivers are polluted, _ (farm) cant use the water for their crops. 4. If _ (everyone) starts to do _ (something), the world will be saved. 5. We all need a _ (health) environment, but we produce _ (waste) every day, and it is _ (harm) to our environ
5、ment.,Reuse,pollution,hopeless,farmers,everyone,something,healthy,waste,harmful,go,Ready?,6. Do not _ (waste) things. 7. Repeat these three words daily: reduce, _ (use) and _ (recycle). 8. Before you buy _ (something) new, think whether it is _ (real) necessary because maybe old one is just as good!
6、 9. but lets take these simple steps today so that we will save the world for our _ (grandson) and _ (granddaughter) tomorrow.,waste,reuse,recycle,something,really,grandsons,granddaughters,构词法,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称作合成法。,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称作派生法。,2. 派生法,2. 派生法,词根,词缀,名词
7、,形容词,副词,+,interest,uninterested,interestingly,uninteresting,interested,interesting,help,helpfully,helplessly,helpful,helpless,able,disable,unable,enable,ability,3. 转换法,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为转化法。,(1) v. n. Lets talk about it more. I think wed better finish the talk now. 咱们再谈谈这件事吧。 我想我们最好现在结束谈话
8、。,(2) n. v. She gave me a cup of water. You should water the flowers twice a day. 她给了我一杯水。 你应该每天给这些花浇两次水。,(3) adj. n. She was wearing a black dress. The girl in black looks very beautiful. 她穿着一条黑色的裙子。那个穿黑衣服的女孩看上去很漂亮。,以下部分为课本练习，供老师在对答案时选择使用。,Learning to,Sometimes if you know the meaning of the parts
9、of a word, you can work out the meaning of the whole word.,re + new + able renewable,again,can be,can be new again,1,P100,Make new words. Join the parts of the words in Box A with the words in Box B. you need to use some of the parts more than once.,-able -ful im- -less re- un-,care collect hope pos
10、sible use usual wanted waste,A,B,careful careless,collectable,hopeful hopeless,impossible,reuse usable useful useless,unwanted,wasteful,unusual,Now work in groups. Play the guessing game English for Fun.,English for Fun,1. full of care _ 2. can be collected _ 3. full of hope _ 4. without any hope _
11、5. not possible _,6. not usual _ 7. without any use _ 8. use again _ 9. not wanted _ 10. making a lot of waste _,careful,collectable,hopeful,hopeless,impossible,unusual,useless,reuse,unwanted,wasteful,2,P100,Complete the sentences with the words in the box.,hopeful impossible reuse unhealthy wastefu
12、l,1. Polluted water is _. 2. It is _ to throw so much food away. 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, the future will be _.,unhealthy,wasteful,reuse,impossible,hopeful,3,P
13、101,Complete the table.,use,use,usefully/ uselessly,hope,hopeful/ hopeless,pollute,polluted/ unpolluted,water,waste,wasteful/ wasted,wastefully,usual/ unusual,4,P101,Complete the sentences with the correct form of the words in Activity 3.,She was _ that her new job would make her more successful.,ho
14、peful,1. The factory _ the river, and the fish died. 2. We often walk in the countryside. It is a(n) _ activity for us. 3. Do not use so much water. It is very _. 4. To keep the flowers growing, you need to _ them once a day.,polluted,usual,wasteful,water,5,P101,Complete the sentences.,A _ is a box
15、that you keep your lunch in.,lunchbox,1. 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. 3. A _ is a book that has one or more stories for children. 4. A _ is a black board that is used at school for writing on with chalk.,postcard,classroom,storybook,
