1、Unit 3 Language in use课 题Unit 3 Language in use共 1 课时主备教师使用教师备课日期上课日期教材分析教学目标1.Knowledge objectiveTo practice word-building: compounds, derivatives, conversion2.Ability objectiveEnable students to learn how to protect environment and Earth Hour.3.Moral objectiveTo arouse the awareness of students pr
2、otecting environment.教学重难点To learn word-building: compounds, derivatives, conversion课 型Revision and application授课方法PWP method, task-based method 教具准备A tape recorder, multimedia and some pictures教与学的设计我的修改Chapter 1 Lead-in : Warming up(营造氛围，导入新课)Step 1 Language practice Reuse means “use again”.Though
3、 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 wasteChapter 2 The students can learn by t
4、hemselves, and ask some questions about the study. (自主学习 提出疑问)Step 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 _1
5、0. 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 againChapter 3 The students can learn the main point with the help of the teac
6、her, and solve the problems. (精讲点拨)Step 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, him
7、self, 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-
8、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, educ
9、ation, 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-ous
10、dangerous, 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
11、 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
12、. 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。Chapter 4 Effective practice, consolidate the knowledge(训练巩固) Step 6 ExercisesComplete the sentences with the words in t
13、he 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
14、 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
15、 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 s
16、ide 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
17、 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. be good for throw away turn off worry about Mike:
18、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 about it? Ive already tried my best to protect the environment. I recycle. I dont _ things if I dont want them any mor
19、e. I _ the lights when I leave a room. Dont tell me I shouldnt travel by plane any more!Mike: No, of course not. But we can do more to protect the environment. 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.Ken
20、: 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 small forest!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.
21、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 poss
22、ible.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 a
23、nd _. 5. _ and do not often drive your car.Producing electricity and using oil may cause _.Chapter 5 Summary evaluation, leak turnover(总结评价，查漏补缺)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
24、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 poll
25、ution, 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.作业布置Discuss your subje
26、ct. 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 板书设计Unit 3 Language in use构词法1. 合成法2. 派生法3. 转化法课后反思