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Module 12 Save our worldUnit 3 Language in use教学目标【知识目标】1. 正确运用本模块的词汇及短语, rest, book, baggage, straight, check in2、能够掌握主谓一致的规则及用法。【能力目标】能运用本模块所学的知识叙述、形容夏令营的特点，相关要求及活动。自己的旅游经历。【情感态度目标】能够谈论自己的一些环保措施，并劝说人们增强环保意识。教学重难点【教学重点】1、能够掌握主谓一致的规则及用法。2、能运用本模块所学的知识叙述、形容夏令营的特点，相关要求及活动。【教学难点】掌握英语中常用的前缀、后缀教学过程Step 1 Language practice Reuse means “use again”.Though pollution is heavy now, I dont think its hopeless.Step 2 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- -less re- un-B care collect hope possible use usual wanted wasteStep 3 Now work in groups. Play the guessing game English for Fun.English for Fun1.full of care _ 2. can be collected _3. full of hope _ 4. without any hope _5. not possible _ 6. not usual _7. without any use _ 8. use again _9. not wanted _ 10. making a lot of waste _Step 4 Learning to learnSometimes if you know the meaning of the parts of a word, you can work out the meaning of the whole word. re + new + able; re = again, able = can be renewable = can be new againStep 5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, airplane, classmate, grandfather 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) 常见前缀前缀含义例词dis-不disagree, dislikeen-使处于某种状态enable, enrichim-, in-不impossible, impatient, inexpensiveinter-在之间, 相互international, interconnectmis-错误地mislead, misunderstandnon-不, 非non-smoker, non-nativere-再, 重复rewrite, retellun-不unable, unhappy, unpopular(2) 常见后缀后缀功能例词-er, -or构成名词teacher, worker, visitor-ianmusician-ingbuilding, painting, shopping, meaning-istartist, scientist-mentagreement, government-nesscoldness, happiness, illness-thtruth, warmth-tioncompetition, education, information, invitation-tyactivity, safety-ble, ible构成形容词comfortable, eatable, enjoyable, possible, probable-alenvironmental, international, national, traditional-fulcareful, helpful, useful-iveactive, expensive-lesscareless, helpless, homeless, useless-lyfriendly, lovely, monthly, weekly-ousdangerous, famous-teen构成数词eighteen, fifteen, seventeen-thfifteenth, fifth, fortieth, seventh-tyforty, sixty, twenty-ly构成副词badly, carefully, carelessly, happily, quickly(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 interest 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 disable3. 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 finish 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。Step 6 ExercisesComplete the sentences with the words in the box.hopeful impossible reuse unhealthy wasteful1. 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 _.Step 7 Complete the table.NounVerbAdjectiveAdverbuseful/uselesshopehopefully / hopelesslypollutionwaterwasteusually/unusuallyStep 8 Complete the sentences with the correct form of the words in Activity 3. She was hopeful that her new job would make her more successful.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.Step 9 Complete the sentences. A lunchbox is a box that you keep your lunch in.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.Step 10 Work in pairsLook at the pictures and answer the questions.1. 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?Step 11 Complete the conversation with the correct form of the expressions in the box.Step 12 Listening Listen and check () the true sentences.a) Do not throw away things made of glass, plastic and paper, but recycle them when possible.b) Take a bag when you go shopping.c) It is OK to throw used things away. Looking after them takes a lot of time.d) Turn off lights when you do not need them.e) Ride a bike or walk, and do not often drive your car.f) Paper cups and bottled drinks make our life easier. We can use them as much as possible.Step 13 Listen again and complete the table.AdviceReasons1. Dont throw away things made of _, but _ them.Throwing things away is wasteful.2. _ your plastic bags when you can and _ with you when you go shopping.Plastic bags _ recycle.3. Use less electricity and oil to _.4. Dont leave lights on and _. 5. _ and do not often drive your car.Producing electricity and using oil may cause _.Step 14 Around the worldEarth HourRead the passage and answer the questions. When is Earth Hour held each year? Why do people switch off the lights during Earth Hour? When and where was the first Earth Hour held? Which city take part in the event today?Step 15 Module task: Discussing what you can do about pollutionWork in groups. Decide what kind of pollution you want to talk about. 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? Lets know more about PM 2.5 and protect the environment from now.Step 16 DiscussionDiscuss your subject. Take turns to say what you think about the problems 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 ”课堂作业Present your group ideas to the whole class. 教学反思
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