Unit13Wearetryingtosavetheearth教案1

1、Unit 13 Were trying to save the earth!一、教学目标：1. 语言知识目标基本词汇：litter, advantage, bottom, fisherman, coal, ugly, cost, wooden, plastic, takeaway, bin, shark, fin, method, cruel. Harmful, chain, ecosystem, industry, law, scientific, afford, reusable, transportation, recycle, napkin, upside, gate, bottle,

2、 president, inspiration, iron, work, metal, creativity, 基本词组：be harmful to, at the top(of sth.), take part in, turn off, take action, throw away, put sth. to good use, pull down, bring back基本句型：Were trying to save the earth! The river used to be so clean. The air is badly polluted. No scientific stu

3、dies have showed that shark fins are good for health. We should help save the sharks. 2. 技能目标: 能正确运用现在进行时，现在完成时，被动语态，情态动词和used to 句型。3. 情感目标: 有环境危机意识，学会关注环境保护环境。二、教学重难点： 1. 教学重点：（1）能正确运用现在进行时，现在完成时，被动语态，情态动词和used to 句型。 （2）保护环境的措施方法。2. 教学难点：能正确运用现在进行时，现在完成时，被动语态，情态动词和used to 句型。三、教学步骤:Section A 1 (1

4、a-2d)I. PresentationShow the picture of the earth and tell students the earth is polluted now. For example: (1) The factories that burn coal pollute the air with a lot of black smoke.(2) Factories put waste into the river.(3) People should throw away litter in the bin. (4)There are more cars on the

5、road.II. LearningHere are some words related to different kinds of pollution. Write them in the box below. Then add more words.loud music cars rubbish planes littering ships factories smoking building houses mobile phonesnoise pollution air pollution water pollution _ _ _ _ _ _ _ _ _Keys : nois

6、e pollution loud music planes mobile phones building housesair pollution factories smoking cars building houseswater pollution ships rubbish littering factoriesIII. ListeningIV. PracticeV. Language points1. Were trying to save the earth! 我们正在竭尽全力拯救地球! try to do =try ones best to do 努力去做某事。 e.g. Ever

7、y student should try to study hard in order to study in a university. 为了进入大学学习，每个学生都应该努力学习。2. Here are some words related to different kinds of pollution. be related to 与有关 e.g. I am not related to him in any way. 我和他无任何关系。 3. Everyone in this town should play a part in cleaning

8、it up! play a part in 在方面起作用 e.g. A good diet plays a large part in helping people live longer. 健康的饮食在帮助人们长寿方面起着非常大的作用。play a part 在中扮演角色 e.g. He was invited to play a part in this TV play. 他被邀请参加这个电视剧的演出。4. Even the bottom of the river was full of rubbish. Yes, but people are throwing litter into t

9、he river.litter 和 rubbish 都可指“垃圾”，用作不可数名词。rubbish 指“没用的东西(被扔或将要丢弃的无用的东西)”不可回收。litter 指“(室内或公共场所)乱扔的废物(纸屑、不要的包装纸、废瓶等)”还可回收e.g. Throw the rubbish out. 把垃圾扔出去。 The room is full of rubbish. 房间里堆满了垃圾。 Pick up your litter after a picnic. 野餐后将废弃物收拾好。 VI. Reading（2d）VII. Summary and language points1. This i

10、s turning beautiful places into ugly ones. turn into 把变成e.g. The icy rain seemed like to turn into snow. 渐渐地冻雨又变成雪花的模样。 2. Its good for health and it doesnt cost anything! cost v. 花费；使付出 指花费金钱，主语通常是物。cost的过去式和过去分词均为cost。 e.g. The new shirt cost Mr Wang 200 yuan. 王先生花了200元买了新衬衫。 How much does the new

11、 computer cost? 新电脑花了多少钱？take, spend, pay & costtake，spend，pay和cost都可以表示“花费”，但它们的用法各有不同。1) take多表示花费时间，常用于It takes sb. some time to do sth.这一句型中，其中it作形式主语。 e.g. It usually takes me 40 minutes to cook the dinner.2) spend多表示花费时间和金钱，主语通常是人，常用于sb. spend(s) some time / money on sth.和sb. spend(s) some

12、 time / money (in) doing sth.两种句型。 e.g. David spent 2,000 yuan on the new machine. My father spends an hour (in) watching the news on TV every day.3) pay多表示花费金钱，主语通常是人，常用于sb. pay(s) some money for sth.句型。 e.g. Tommy paid 20 yuan for his breakfast yesterday.4) cost多表示花费金钱，主语通常是物，常用于sth. cost(s) (sb.)

13、 some money. 句型。 e.g. The new dress cost Linda 88 yuan.根据句意用take, spend, pay或cost的适当形式填空。1) That new car _ them lots of money.2) Mona _ 50 yuan on the books just now.3) It usually _ me an hour to do my homework.4) You should _ some time practising your pronunciation.5) My brother _

14、60;6, 000 yuan for the new computer yesterday.Keys cost   spent  takes spend paid3. So together, our actions can make a difference and lead to a better future! make a difference (to) 表示(对)产生影响或作用 e.g. Do you think his words would make any difference to the final decision? 你认为他的话会对最后的决

15、定产生影响吗？ The new teacher always encourages little Tom. This has made a big difference to him.新来的老师总是鼓励小汤姆，这对他影响很大。VIII. Exercises用动词的适当形式填空。1) Were trying _ (save) the earth.2) There used to_ (be) clean and beautiful.3) There are too many _ for _to catch (fish).4) Its bad for environment to use _ (wo

16、od) chopsticks.Keys: to save be fish fishermen woodenIX. Homework1. Copy the new words and remember them. 2. Read the listening materials of 1b, 2a.教学反思：Section A 2 (3a-3c)I. Revision(1) Role-play 2d.(2) Translate these sentences into English.甚至是河底都满是垃圾。这个小镇上的每个人都应该参加打扫。骑自行车有其它的优点。我买外卖食品从来不拿木筷子和塑料叉子

17、。II. Lead in (1) Teacher tells students the earth is badly polluted. What should we do to save the earth? Lets take action. For example: Turn off the lights when you leave a room; Take buses instead of driving carsRecycle books and paper.(2) There are some animals are endangered. We should do someth

18、ing to protect the animals and the environment! III. Discussion (1) Have you ever seen a shark?(2) What do you know about sharks? IV. Reading(1) Sharks are endangered, read the passage and judge the sentences.Sharks fin（鱼鳍）soup is famous and expensive all around the world.We have to kill a whole sha

19、rk to get a bowl of sharks fin soup.People cut off sharks fins and throw the sharks back into the ocean.Sharks are in the bottom of the food chain in the oceans ecosystem.WildAid and the WWF are environmental protection groups in China.Sharks fin s are good for health.(2) Complete the fact sheet in

20、3a. Where shark fin soup is popular Number of sharks caughtand traded every yearHow much the numbers of some kinds of sharks have fallen in the last 20 to 30yearsTwo environmental groups which are against “finning”V. Practice (3b) (1) Read the passage and dill in the blanks with the words in th

21、e box.1. Many people do not realize they are killing a whole shark _ they enjoy a bowl of shark fin soup.2. Sharks are at the top of the food chain, _ if their numbers drop, the oceans ecosystem will be in danger.3. Many think that sharks are too strong to be endangered, _ they are wrong.4. _ there

22、are no scientific studies to support this, a lot of people believe that shark fins are good for health.5. Sharks may disappear one day _ we do not do something to stop the sale of shark fins. (2) Retell the passage according to the words below.sharks fin soup, in southern China each time cut off no

23、longer not onlybut also at the top drop be endangered the strongest around 70 million fallen by over 90 percent WildAid and the WWF develop laws scientific studiesVI. Language points1. A shark can no longer swim and slowly dies. 鲨鱼不能再游泳然后慢慢死掉。no longer意思是“不再” e.g. Im no longer a student. 我不再是个学生了。 有

24、两个短语和no longer同义，即notany longer和notany more，但他们侧重的方面不同。no longer和notany longer侧重时间。 e.g. He no longer lives here.= He doesnt live here any longer. 他不在这儿居住了。(一个时间以前他住在这儿，过了这个时间，他就离开了。) notany more侧重侧重程度和数量e.g. You can drink no more. = You cant drink any more. 你不能再喝了。(喝酒的量到了一定程度，不能再继续下去了。) 2. This met

25、hod is not only cruel, but also harmful to the environment. 这种方法不但残忍而且对环境有害。not onlybut also用于连接两个表示并列关系的成分，着重强调后者，其意为“不仅而且”; 其中的also有时可以省略。e.g. 1) She not only plays well, but also writes music. 她不仅很会演奏，而且还会作曲。 2) Not only men but also women were chosen. 不仅仅是男的，女的也有被选中的。 若连接两个成分作主语，其谓语通常与靠近的主语保持一致。

26、e.g. Not only you but also he has to leave. 不只是你，他也得离开。 not only放在句首，后接句子时要用倒装结构。 e.g. Not only had the poor man been fined, but also he had been sent to prison. 这个可怜的人不仅被罚款，而且还被送进了监狱。 be harmful to 对 有害e.g. Smoking is harmful to the health. 吸烟有损健康。 Playing computer games much is harmful to students

27、. 电脑游戏玩太多对学生有害。3. Sharks are at the top of the food chain in the oceans ecosystem. 鲨鱼位于海洋生物系统食物链的顶部。at the top of 在.最高地位; 用最高最大的(速度, 声音等) e.g. I looked at the top of his head, his hair shiny and parted smoothly. 我看他的头顶, 头发光亮, 分得平滑。 He shouted at the top of his voice in order that he might be heard.

28、他尽力大声叫喊, 以便别人能听见。4. If their numbers drop too low, it will bring danger to all ocean life. 如果它们的数目降至过低，会给所有海洋生物带来危险。此句复数形式的number表达全海洋中鲨鱼的总量。当表示数值的高或低时，number要用high或low修饰。e.g. In that country, the number of children going to school is higher in cities than in towns and village.在那个国家，城市儿童入学人数比乡镇及农村要高

29、。常与number搭配的动词有grow, fall等。e.g. The number of families that own cars has been growing quickly recently. 近来拥有轿车的家庭数量增长很快。5. Environment protection groups around the world, such as WildAid and the WWF, are teaching the public about “finning”. 世界各地的环境保护组织，如野生救援协会和世界自然基金会，都在教育公众有关“猎翅”的行为。1) 句中fin本为名词，指

30、“鱼鳍”。此句中的finning由动词化的fin（割鲨鱼鳍以获取鱼翅）的-ing形式转化而成，指课文中所陈述的 “猎翅”这一行为。2) WildAid和WWF组织WildAid（美国野生救援协会）是保护野生动物及栖息地环境的一个非盈利性的机构，1999年注册成立，其宗旨是保护及救助世界范围内的野生动物；WWF（世界自然基金会）英文全称为World Wide Fund for Nature，成立于1961年，是享有国际盛誉，全球最大的独立性非政府环境保护组织之一。VII. HomeworkWrite 5 measures to protect the environment.教学反思：Secti

31、on A 3 (Grammar Focus-4c)I. RevisionII. Grammar FocusPay 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.1. 现在进行时: Pres

32、ent 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 nowe.g. Look! The boy is crying.2. used to do与be used to doingused 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 dr

33、inking a cup of coffee every morning.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 year. 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, nev

34、er, since, fore.g. I havent finished my homework yet.5. 情态动词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

35、. Tracy could ride a bicycle when she was five years old. You mustnt play with fire. It is dangerous.III. Practice1. Work on 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-U

36、p Day last year. It was _ (consider) the biggest clean-up project this city _ ever _ (have). 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 a

37、fford to _ (wait) any longer to take action! Learn some new words and expressions.2. Work on 4b. Fill in the blanks with the appropriate modal verbs from the box. The words are:can, would, could, have to, should, must, may/might People _ think that big things _ be done to save the earth. Many forget

38、 that saving the earth begins with small things. For example, you _ save 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

39、 work, you _ ride your bike or walk. If its far, you _ take the bus. All these small things _ add up and become big things that _ improve the environment. Lets take action now!Learn some new words and expressions.3. Work on 4c. Make a list of things that people can do to help the environment and dis

40、cuss your list with your partner. use public transportation (n.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;recycle books and paper4. Discussion. A: I think that everyone should use public

41、transportation.B: I disagree. Its difficult for parents with young children to use public transportationIV. Language points1. We cant afford to wait any longer to take action! afford v. 承担得起；提供, 给予 afford to do sth. (常与can, be ble to连用) 买得起；有足够的e.g. We cant afford to pay such a price. 我们付不起这个价钱。 Dan

42、cing affords us pleasure. 跳舞给我们带来快乐。2. save electricity by turning off the lights when you leave a room. turning off 关掉 e.g. Please turn the television off before you go to bed. 睡觉前请关掉电视。拓展：turn相关短语turn around 转身 turn up 调高（音量）turn down 调低；拒绝 turn into 变成；进入 turn on 打开，发动 turn off 关掉，关闭turn out to b

43、e 结果是 turn over 移交V. HomeworkFinish the exercises in the workbook. 教学反思：Section B 1 (1a2e)I. RevisionII. Leading in (1) Tell students we should do these things to protect the environment. Turn off the lights when you leave a room; Stop riding in cars; Stopping using paper towels or napkins; Recycle

44、books and paper.Turn off the shower while you are washing your hair.You can help reduce pollution by putting that soda can in a different bin. Dont use paper napkins.(2)What can we do to help save the earth? Rank these items from the easiest (1) to the most difficult(5). (1a)_stop riding in cars _re

45、cycle books and paper _turn off the lights when you leave a room _turn off the shower while you are washing your hair_dont use paper napkins(3) Compare your answers in 1a with your partner. III. Listening 1c&1dIV. Practice(1) Make a conversation using the information from the chart in 1c. Say wh

46、at is true for you.(2) Guessing gameShow some pictures to students and get them to guess what these things are made from.V. Reading VI. Language points1.Do you often throw away things you dont need anymore?1) throw away扔掉，丢弃浪费 (机会、优势或好处)e.g. I never throw anything away. 我从来不扔任何东西。 2) 错过(机会等)，放过；未能很好

47、利用(机会等)e.g. Dont throw away this opportunity. 不要错过这个机会。3) 浪费(时间、金钱等)乱花(钱等)e.g. It will be time and money thrown away. 这将是浪费时间和金钱。 2. Have you ever thought about how these things can actually be put to good use?put sth. to good use 好好利用e.g. Your creative talents can also be put to good use, if you ca

48、n work up the energy. 如果你能让自己精力充沛起来，你的创作才能也能得到很好的发挥。3. She lives in a house in the UK that she built herself out of rubbish.build/make . out of 用建造/制造e.g. He built a model ship out of wood. 他用木头造了个模型船。 Some birds build nests out of twigs. 一些鸟用小枝筑巢 。4. The top of the hou

49、se is an old boat turned upside down. turned upside down 意为“被翻转过来的；被颠倒过来的”，做后置定语修饰boat。 e.g. Tony had an upside-down map of Britain on his wall. 托尼的墙上倒挂了一张英国地图。 The lid, turned upside down, served as a coffee table. 那个盖子被翻过来当作咖啡桌。5. And the gate in front of her house is made of rocks and old glass b

50、ottles.be made of和be made from都表示“由制成”，但二者的用法有区别。be made of常常表示原材料未发生化学变化，从成品中仍可看出原材料；而be made from常常表示原材料经过化学变化，从成品中看不出原材料。 e.g. The desks and chairs are made of wood. 这些课桌椅是木材制成的。 This kind of wine is made from wheat. 这种酒是用小麦制成的。6. He is known for using iron.be known for 因而著名 be known as 作为而著名 be

51、known to 对于某人来说是著名的e.g. He was known for his friendly. 他以友好而著称。He is known to the police as a thief. 对警察来说是一个小偷。Zhou Jielun is known as a rap singer. 周杰伦是作为一个说唱歌手而出名。 7. Not only can the art bring happiness to others, but it also shows that even cold, hard iron can be brought back to life with a lit

52、tle creativity (n. 创造力).bring back 恢复；使想起；归还not only . but (also) . 表示“不但而且”。本句中的not only位于句首，其后的主谓要部分倒装，即根据主语的人称和数以及时态的变化，将不同的助动词提到主语前，需要注意的是but (also)后面的主谓不用倒装。例如：Not only did my aunt teach at school, but (also) she wrote articles for newspapers.我阿姨不仅在学校教书而且还给报纸写稿。VII. Practice 2c and 2d(1) Fill i

53、n the blanks with the correct forms of the phrases in the box.put to good use build out ofpull down （拆下） set upknown for not only but also1. Amy Hayes lives in the UK. Many of the old buildings in her neighborhood were _.2. All the rubbish and old things in Amys neighborhood were then_ when Amy built her house.3. Amy is very creative. She _ her front gate _ rocks and old glass bottles. She put an old boat on top of her house.4. Jessica Wong sells her bags in a small shop, but she has also _ an online business to sell them.5. Though Jessicas bags are m