人教版九年级Unit 13 We're trying to save the earth!-Section A Grammar focus 4a—4c-ppt课件-(含教案+素材)-公开课-(编号：11c6b).zip

1. 不同种类的污染不同种类的污染 2. 河底河底 3. 把垃圾扔到河里把垃圾扔到河里 4. 在在中起作用中起作用 different kinds of pollution the bottle of the river throw rubbish into the river play a part in I. Check if you know these phrases. 5. 在中国南部在中国南部 6. 对对有害有害 7. 在在顶部顶部 8. 海洋生态系统海洋生态系统 in southern China be harmful to at the top of the oceans ecosystem II. Translate the sentences. 1. 甚至是河底都满是垃圾。甚至是河底都满是垃圾。 2. 这个方法不仅残酷还对环境有害。这个方法不仅残酷还对环境有害。 Even the bottom of the river was full of rubbish. This method is not only cruel, but also harmful to the environment. 3. 鲨鱼处于海洋食物链的顶部。鲨鱼处于海洋食物链的顶部。 4. 许多人相信鱼翅对健康有好处。许多人相信鱼翅对健康有好处。 Sharks are at the top of the food chain in the oceans ecosystem. A lot of people believe that sharks fins are good for health. Pay attention to the sentences. 1. Were trying to save the earth. 2. The river used to be so clean. 3. The air is badly polluted. 4. No scientific studies have shown that shark fins are good for health. 5. We should help save the sharks. Present progressive used to Passive voice Present perfect Modal verbs 现在进行时现在进行时: : Present Progressive 结构结构: be (am/is/are) + v.-ing 标志词：标志词：Look, Listen, now, right now e.g. Look! The boy is crying. 定义：定义：表示说话时表示说话时(瞬间瞬间)正在进行正在进行 的动作的动作, 也表示目前或现阶段正在进也表示目前或现阶段正在进 行的动作。行的动作。 What a fine day today! Look! What are they doing? used to do sth. 表示过去常常做某事表示过去常常做某事, 而现而现 在往往不做了在往往不做了, 后接动词原后接动词原 形。形。 be used to doing sth. 表示习惯于做某事表示习惯于做某事 e.g. I used to get up at six oclock. Joe is used to drinking a cup of coffee every morning. used to do与与be used to doing Translation. 1. 她过去常常周末和朋友闲逛。她过去常常周末和朋友闲逛。 She used to hang out with friends on weekends. 2. 他习惯于每天晚上睡得很晚。他习惯于每天晚上睡得很晚。 He is used to staying up. 被动语态：被动语态：Passive voice 定义：定义：表示主语是动作的承受者，即行表示主语是动作的承受者，即行 为动作的对象的一种语态。为动作的对象的一种语态。 结构：结构：be + 过去分词过去分词 e.g. A new school was built last year. Our classroom is cleaned every day. Translate the sentences by using Passive voice. 1. 刚才一些老年人参观了博物馆。刚才一些老年人参观了博物馆。 2. 工人们使用不同种类的机器工作。工人们使用不同种类的机器工作。 The museum was visited by some old people just now. Different kinds of machines are used to work by the workers. 结构结构: has/have + 过去分词过去分词 标志词：标志词：already, yet, ever, never, since, for e.g. I havent finished my homework yet. 定义：定义：表示动作已经完成表示动作已经完成, 但对现在造成影但对现在造成影 响响; 或者表示从过去某一时间开始一或者表示从过去某一时间开始一 直延续到现在并还可能持续下去的直延续到现在并还可能持续下去的 动作。动作。 现在完成时现在完成时: Present Perfect Complete the following sentences. 1. I _ (be) in Beijing for two years. 2. I _ never _ (hear) of that man before. 3. Tom _ (work) there since two years ago. have been haveheard has worked 4. The twins _ (wash) the clothes for an hour. 5. He _ (play) basketball since three years ago. 6. How long _ Sally _ (sing) yet? have washed has played has sung 1. 情态动词本身有一定的词义情态动词本身有一定的词义, 表示说表示说 话人的情绪、态度或语气话人的情绪、态度或语气, 但不能单但不能单 独作谓语独作谓语, 只能与其他动词构成谓语只能与其他动词构成谓语 。常见的有常见的有: can (could), may (might), must, need, shall (should), will (would)等。等。 情态动词情态动词 2. 情态动词无人称和数的变化情态动词无人称和数的变化, 后接动词后接动词 原形。否定式是在情态动词后面加原形。否定式是在情态动词后面加not 。个别情态动词有过去式形式。个别情态动词有过去式形式, 可用来可用来 表达更加客气、委婉的语气。表达更加客气、委婉的语气。 e.g. Ken can climb up the trees like a koala. Tracy could ride a bicycle when she was five years old. You mustnt play with fire. It is dangerous. Translation. 1. 我们不能在教室里吃东西。我们不能在教室里吃东西。 2. 首先你必须完成作业。首先你必须完成作业。 3. 他现在不可能在家。他现在不可能在家。 4. 她一定知道这个问题的答案。她一定知道这个问题的答案。 We cant eat in the classroom. You must finish your homework first. He cant be at home now. She must know the answer to this question. 4a Fill in the blanks with the correct forms of the verbs in brackets. Joe: _ you ever _ (take) part in an environmental project ? Eric: Yes, I have. I _ (help) with a Clean-Up Day last year. It was _ (consider) the biggest clean-up project this city _ ever _ (have). Have taken helped considered had had 参加参加 Joe: How many people _ (take) part? Eric: I _ (think) more than 1,000 people _ (come) to help out. Joe: Thats fantastic! I guess everyone in this city is _ (try) to improve the environment. Eric: Yes, we cant afford to _ (wait) any longer to take action! took think came trying wait v. 承担得起承担得起( (后果后果) ); 买得起买得起 4b Fill in the blanks with the appropriate modal verbs from the box. People _ think that big things _ be done to save the earth. Many forget that saving the earth begins with small things. For example, you _ save may/might must can can would could have to should must may/ might electricity by turning off the lights when you leave a room. You _ also use reusable bags instead of plastic bags. I think its a great idea that you now _ pay for plastic bags in some stores. And instead of driving to school or work, you _ ride your bike or walk. If its far, you _ take the bus. All these could have to can/should can/could 关掉关掉adj.可重复使用的可重复使用的 付费付费;付出代价付出代价 small things _ add up and become big things that _ improve the environment. Lets take action now! could would/can 采取行动采取行动 4c Make a list of things that people can do to help the environment and discuss your list with your partner. use public transportation (n.交通运输交通运输); turn off the lights when you leave a room; use reusable bags instead of plastic bags; ride your bike or walk to school or work; stop using paper napkins(餐巾纸餐巾纸); recycle books and paper I think that everyone should use public transportation. I disagree. Its difficult for parents with young children to use public transportation 1. We cant afford to wait any longer to take action! afford v. 承担得起承担得起; 提供提供, 给予给予 afford to do sth. (常与常与can, be able to 连用连用) 买得起买得起; 有足够的有足够的 e.g. We cant afford to pay such a price. 我们付不起这个价钱。我们付不起这个价钱。 Dancing affords us pleasure. 跳舞给我们带来快乐。跳舞给我们带来快乐。 2. save electricity by turning off the lights when you leave a room. turn off 关掉关掉 e.g. Please turn the television off before you go to bed. 睡觉前请关掉电视。睡觉前请关掉电视。 turn around 转身转身 turn up 调高调高(音量音量) turn down 调低调低; 拒绝拒绝 turn into 变成变成; 进入进入 turn on 打开打开, 发动发动 turn off 关掉关掉, 关闭关闭 turn out to be 结果是结果是 turn over 移交移交 拓展拓展: turn相关短语相关短语 Finish the exercises in the workbook. I.根据句意及首字母或汉语提示完成单词。 1.In order to protect the environment, its important for us to r_ used books and paper. 2.There is some water at the b_ of the box. 3.Can I use the free p_ bags in the shop?Youd better not. 4.Fruit juices can be h_ to childrens teeth. 5. It was her dream to enter the film i_ when Gong Li was very young. 6.So far, no s_ studies have shown that sharks fins are good for health. 7.I saw the White House where the P_ of the USA lives. 8.People throw l_ into the river and make it really dirty. 9.Her teaching experience gave her a big a_ over the other applicants for the job. 10. The landlord is so c_ that almost everybody hates him. 11. Some w_ in this museum are made of metal. II.单项选择。 1.() He would like to _the next Clean-up Day. A. play with B. play to C. play against D. play a part in 2.() We should stop _ trees at will (随意). A. cutting off B. cutting down C. cutting down on D. cutting up 3.() Not only _ dance well, but he sings very well. A. he doesB. does he C. does D. he 4.() The number of the students in our school _ in the last few years. A. has fallen B. had fallen C. fell D. has fell 5.() He can _ dance, because his leg was badly hurt. A. no more B. no longer C. not moreD. not longer 6.() Its known that drinking too much is harmful _ our health, but some people dont care. A.with B.on C.to D.for 7.() Eric cant afford _ a holiday this summer, because he has much work to do. A.have B.had C.having D.to have 8.() Hundreds of trees _ around our school last year. A.planted B.are planted C.have planted D.were planted 9.() Now many wild animals are in danger. If we dont _ to protect them, it will be hard for us to see them in the near future. A.take place B.take part C.take action D.take care 10. () The story is so strange that we have never_it before. A.heard from B.heard of C.heard D.listened to 11. () In the city, many old buildings will be_next year. A.pulled up B.pulled down C.pulled out D.pulled in 12. () Hes never stolen anything before, _he? _. Its his second time to be taken to the police station. A.hasnt; Yes B.has; Yes C.has; No D.is; No 13. () In a text message, 88 means Byebye. And another example is F2F_stands for face to face. A.that B.who C.whom D.it 14. () Our math teacher stays in the office for a long time every day. Yes, it_him a long time to check our homework. A.costs B.spends C.takes D.pays 15. () Waste paper must be _ good use. A. put B. put to C. to put D. puts 16. () My father plans _ an article about new methods of _ math. A. to write; learnB. writing; learning C. to write; learning D. writing; to learn 17. () Why not consider_abroad in five years? A.study B.to studyC.studied D.studying 18. () He used to cut down many trees, but now he has to _it. A.pay back B.pay off C.pay for D.pay out 19. () Who _ the tennis game yesterday?Jack, he _ all the others. A.beat;won B.won;won C.beat;beat D.won;beat III.根据所给词的正确形式填空。 1.The teacher often tells us saving the earth _ (begin) with small things. 2.Our head teacher told us we had to make a plan before _ (take) action. 3.What was the air pollution _ (cause) by? 4.Can the book be _ (bring) back to my room? 5.Chengdu is a city _(know) for delicious hot food. 6.Most students in our class go in for _(science) activities. 7.We have had several meetings to discuss _(environment) problems in the neighborhood. 8.If something is _(recycle), it means you can collect them and use them again. 9.People in this city have found the tap water smells terrible _(recent). 10. Sorry, Miss Zhang. I dont think this is _ (create) enough. 11. He _(not come) yet. What do you think has happened to him? IV.句型转换 1.Nothing is a waste if you have a creative mind.(改为同义句) _is a waste if you _ _a creative mind. 2.We can see more popular works in the art museum.(改为被动句) More popular works _ _ _ in the art museum by us. 3.Everyone can protect the environment by doing something special in the daily life.(对画线部 分提问) _ _ everyone _ the environment in the daily life? 4.It is hard for people to stop driving cars .(改为同义句) _ _ _ cars is hard for people. 5.We need to save the earth because it is the only home to us.(对画线部分提问) _ _ we _to save the earth? V.根据中文意思完成句子。 1.她住在英国的一所房子里, 房子是她自己用废弃物建造而成的。 She lives in a house in the UK that she _herself _ _ _. 2.艾丽丝好好利用了她爸爸给的零用钱。 The pocket money that her father gave her was _ _ _ _ by Alice. 3.你的文章让我想起了儿时美好的记忆。 Your article _me _to the nice memories in the childhood. 4.雾霾对我们的健康有害, 人人都应参与到拯救环境的行列中。 Thick haze is bad for our health.Everyone should_ _ in saving the environment. 5.长颈鹿能够到树顶的叶子。 A giraffe can reach the leaves _ _ _ _ the trees. 6.美国人正在捕杀大量的亚洲鲤鱼(carp), 因为他们认为这种鱼会给美国的野生动物带来 危险。 Americans are killing a lot of Asian carp because they think this kind of fish _ _ _ _ the wildlife in America. 7.当地政府已经制定了法律来保护这些濒危动物。 The local government _ _ _to protect the endangered animals. V.短文 7 选 5(5 选 5 等)（共 5 小题;共 10 分） What will life be like in the future? Will it be much better than it is now? Genetic engineering (基因工程) may help us make the perfect human. Babies may grow up to play basketball like Yao Ming. 1. _ Also, we may be able to bring the dead back to life. Maybe people will be able to meet and talk with their dead members. Over the next 20 to 50 years, it will become harder to tell the differences between humans and machines. 2._We may appear to be alive long after we are dead. We may be able to find ways of putting the life of a person into a new body. Narobots(纳米机器人) will be important 3. _ For example, when we have a stomachache, we will take a narobot and it will travel through our stomachs, seeing whats happening there. 4._ In the future, there will be more robots everywhere, and humans will have less work to do. 5. _. Some will look like humans, and others might look like frogs or snakes. Before an earthquake, a frog robot could foretell(预告) it. After the earthquake, a snake robot could help look for anything under buildings. What will we be able to do in 20 or 30 years? Will our life be much better in the future? A. In this way, it helps the doctor cure(治愈) us. B. We may be able to copy ourselves. C. We will use them when we are sick. D. People may be interested in using computers and Internet. E. New robots will have many different shapes. F. And they may grow up to run faster than Liu Xiang. Period 3 Section A (Grammar Focus-4c)教学设计 【教学目标】 1学习并掌握新词汇：reusable，afford，transportation 2学习并会用以下常用表达：try to do sth.，used to do sth.，is/are doing，be considered，take part in，play a part in doing sth.，help with，help out，turn off，instead of，pay for，add up，afford to do sth.，notany longer，take action，Its difficult for sb.to do sth. 【学习重点】 掌握背诵 Grammar Focus 中的句子。 【学习难点】 正确使用本课语法要点。 【教学过程】 Step 1. Revision 1. Check if you know these phrases. 不同种类的污染 河底 把垃圾扔到河里 在中起作用 在中国南部 对有害 在顶部 海洋生态系统 2. Translate these sentences into English. 甚至是河底都满是垃圾。 这个方法不仅残酷还对环境有害。 鲨鱼处于海洋食物链的顶部。 许多人相信鱼翅对健康有好处。 Step 2. Grammar Focus Pay attention t o the sentences. 1) Were trying to save the earth. 2) The river used to be so clean. 3) The air is badly polluted. 4) No scientific studies have shown that shark fins are good for health. 5) We should help save t he sharks. 1. 现在进行时: Present Progressive 定义：表示说话时（瞬间）正在进行的动作，也表示目前或现阶段一直进行的动作。 结构: be (am/is/ are) + v.-ing 标志词：Look, Listen, now, right now e.g. Look! The boy is crying. 2. used to do 与 be used to doing used to do sth. 表示过去常常做某事, 而现在往往不做了, 后接动词原形。 be used to doing sth. 表示习惯于做某事。 e.g. I used to get up at six oclock. Joe is used to drinking a cup of coffee every morning.来源:学+科+网 3. 被动语态：Passive voice 定义：表示主语是动作的承受者，即行为动作的对象的一种语态。 结构：be + 过去分词 e.g. A new school was built last ye ar. 来源:学#科#网 Z#X#X#K Our classroom is cleaned every day. 4. 现在完成时: Present Perfect 定义：表示动作已经完成, 但对现在造成影响; 或者表示从过去某一时间开始一直延续到现在并还可能 持续下去的动作。 结构: has/have + 过去分词 标志词：already, yet, ever, n ever, since, for来源:Zxxk.Com e.g. I havent finished my homework yet. 5. 情态动词来源:学&科&网 Z&X&X&K 1) 情态动词本身有一定的词义，表示说话人的情绪、态度或语气，但不能单独作谓语，只 能与其他动 词构成谓语。常见的有：can (could), may (might), must, need, shall (should), will (would)等。 2) 情态动词无人称和数的变化, 后接动词原形。否定式是在情态动词后面加 not。个别情态动词有过去 式形式, 可用来表达更加客气、委婉的语气。 e.g. Ken can climb up the tress like a koala. Tracy could ride a bicycle when she was five years old. You mustnt play with fire. It is dangerous. Step 3. Practice 1. Work on 4a. Fill in the blanks with the correct forms of the verbs in brackets. 2. Work on 4b. Fill in the blanks with the appropriate modal verbs from the box. cc 来 c 源:学*科*网 Z*X*X*K 3. Work on 4c. Make a list of things that people can do to help the environment and discuss your list with your partn er. 4. Discussion. A: I think that everyone should use public transportation. B: I disagree. Its difficult for parents with young children to use public transportation Step 4 Exercise: Step 5. Homework Write an article to show in what way we students can protect the environment.