Unit 13 We are trying to save the earth教案

1、Unit 13 Were trying to save the earth!一、教學(xué)目標(biāo)：1. 語言知識目標(biāo)基本詞匯：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, 基本詞組：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. 技能目標(biāo): 能正確運用現(xiàn)在進(jìn)行時，現(xiàn)在完成時，被動語態(tài)，情態(tài)動詞和used to 句型。3. 情感目標(biāo): 有環(huán)境危機意識，學(xué)會關(guān)注環(huán)境保護(hù)環(huán)境。二、教學(xué)重難點： 1. 教學(xué)重點：（1）能正確運用現(xiàn)在進(jìn)行時，現(xiàn)在完成時，被動語態(tài)，情態(tài)動詞和used to 句型。 （2）保護(hù)環(huán)境的措施方法。2. 教學(xué)難點：能正確運用現(xiàn)在進(jìn)行時，現(xiàn)在完成時，被動語態(tài)，情態(tài)動詞和used to 句型。三、教學(xué)步驟:Section A 1 (1

4、a-2d)Learning objectives:1. To listen for specific information.2. To talk about pollution and environmental protection.3. To learn to use the sentence patterns. used to.but now should do sth.I. PresentationShow the picture of the earth and tell students the earth is polluted now. For example: (1) Th

5、e 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 road.Learn some new words.II. Work on 1aHere are some words related to different kinds of pollution. Write them in

6、 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 _ _ _ _ _ _ _ _ _III. Listening1. Work on1b. Listen and complete the sentences.What was the problem?The river was _. Even th

7、e bottom (底部) of the river was full of _. There were no more _ for fishermen (漁民) to catch.What caused the problem?People are throwing _ into the river. Factories are putting _ into the river.How should the problem be solved?We should write to the _ and ask them to _ the factories. Everyone should h

8、elp to _ the river.2. Listen again and answer the following questions.1) What does Tony want to do later this afternoon?He wants to go swimming with Mark in the river later this afternoon.2) Why doesnt Mark want to go with Tony? Because the river was really dirty. Even the bottom of the river was fu

9、ll of rubbish, and there were no more fish for fishermen to catch. 3) How was the river in the past? It used to be so clean. It has been the nicest river in this town.3. 原文 used to do sth. “過去常常” 表示過去習(xí)慣性的動作但如今已不存在。 play a part in doing sth. “參與做某事; 在做某事上起作用”。IV. Practice1. Role-play the conversation

10、 in 1c.Mark: The river was dirty. Even the bottom of the river was full of rubbish.Tony: But it used to be so clean!Mark: Yes, but people are throwing litter into the river.Tony: Everyone in this town should play a part in cleaning it up!2. Make conversations using the pollution in 1a.A: The river h

11、as always been the nicest river in this town.B: Yes, it used to be so clean.A: But I was there last weekend and the river was really dirty.B: What caused the problem?A: People are throwing litter into the river.B: What should we do?A: Factories are also putting waste into the river.B: Yes, everyone

12、in this town should play a part.A: We should write to the government and ask them to close down the factories.B: What else can we do?A: Everyone should help to clean up the river.V. Language points1. Were trying to save the earth! 我們正在竭盡全力拯救地球! try to do =try ones best to do 盡力去做某事 【運用】 我會盡力做好這項工作。_

13、Well try to finish the work in a week.    try短語 try doing sth. 試著做某事 try on  試穿try out  嘗試；試驗；試試 用try短語的適當(dāng)形式填空。1) I went to the tailors to _ my new suit.2) Lets _ your method. It seems very good.3) I think you should _ to improve your English.4) Let me _ the story.

14、 讓我試著講一講這個故事吧。2. Here are some words related to different kinds of pollution. be related to 與有關(guān) e.g. Is the driver relate to the accident? 司機和這起事故有關(guān)嗎？VI. Listening1. Work on 2a. Listen to the interview. Circle the kinds of pollution that Jason and Susan talk about.A. land pollution B. air pollutionC

15、. noise pollution D. water pollution2. Work on 2b. Listen again and complete the sentences.1) The air is badly polluted because there are _ on the road these days.2) Factories that burn coal also _ the air with a lot of black smoke.3) There is also too much rubbish and waste. People _ things every d

16、ay.4) People are also littering in _ like parks. This is turning beautiful places into ugly (丑陋) ones. Complete the sentences according to the dialogue.1. I _ _ _ able to see stars in the sky, but now I cant see them clearly. used to be2. The air _ _ really _ around there. has becomepolluted3. Peopl

17、e are also _ in the public places. littering4. The factories that burn _ also _ the air with a lot of black smoke. coalpolluted 3. 原文 Pay attention to the sentences.VII. Practice (Work on 2c)Use the information in 2a and 2b to role-play conversations between Jason and Susan.Jason: The air has become

18、 really polluted around here. Im getting very worried.Susan: Yes, I used to be able to see stars in the sky.Jason: The problem is that VIII. DiscussionAsk students what we should do to save the earth. Help students answer, turn off thelights when you leave a room; stop riding in cars; stop using pap

19、er towels or napkins; recycle books and paper.IX. Reading1. Read 2d and complete the chart.ProblemsSolving problemsair pollutionwaste pollutionwooden (木頭的) chopsticks or plastic forksrubbish2. Complete the sentences.What should we do?1. We should take _ or _ instead of driving.2. We should also _ _

20、_. Its good for health!3. Bring _ to go shopping.4. Never take _ or _ when buying takeaway food.5. _ in the bins and keep public places clean and beautiful.3. Role-play the conversation.Interviewer: Jason and Susan, what are your ideas for solving these problems?Jason: Well, to cut down air pollutio

21、n, we should take the bus or subway instead of driving.Susan: Yeah, or ride a bike. There are other advantages (優(yōu)點) of bike riding. Its good for health and it doesnt cost (花費) anything!Interviewer: Great ideas! What about waste pollution?Susan: Mmm, I think simple things like bringing a bag to go sh

22、opping can help. I started doing that a year ago.Jason: Me, too. Also, I never take wooden chopsticks or plastic (塑料) forks when I buy takeaway (外賣食品) food. I use the ones at home.Susan: And remember to throw rubbish in the bins and keep public places clean and beautiful for everyone.Interviewer: So

23、 together, our actions can make a difference and lead to a better future!4. Pay attention to the sentences.X. Language points1. Its good for health and it doesnt cost anything! cost v. 花費；使付出 指花費金錢，主語通常是物。cost的過去式和過去分詞均為cost。 e.g. The new shirt cost Mr Wang 200 yuan. 王先生花了200元買了新襯衫。 How much does th

24、e new computer cost? 新電腦花了多少錢？辨析 take, spend, pay & costtake，spend，pay和cost都可以表示“花費”，但它們的用法各有不同。1) take多表示花費時間，常用于It takes sb. some time to do sth.這一句型中，其中it作形式主語。 e.g. It usually takes me 40 minutes to cook the dinner.2) spend多表示花費時間和金錢，主語通常是人，常用于sb. spend(s) some time / money on sth.和sb. spend

25、(s) some time / money (in) doing sth.兩種句型。 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多表示花費金錢，主語通常是人，常用于sb. pay(s) some money for sth.句型。 e.g. Tommy paid 20 yuan for his breakfast yesterday.4) cost多表示花費金錢，主語通常是物，常用于sth. cost(

26、s) (sb.) some money. 句型。 e.g. The new dress cost Linda 80 yuan.(1) It takes sb. some time to do sth. (主語為it)(2) sb. spend(s) time/money on sth. (主語為sb.) sb. spend(s) time/money (in) doing sth.(3) sb. pay(s) money for sth. (主語為sb.)(4) sth. cost(s) sb. money (主語為sth.)根據(jù)句意用take, spend, pay或cost的適當(dāng)形式填空。

27、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 _ 6, 000 yuan for the new computer yesterday.2. So together, our actions can make a diff

28、erence and lead to a better future! make a difference (to) 表示(對)產(chǎn)生影響或作用 make no difference to 對沒有影響 e.g. Learning English well can make a difference to your future. 學(xué)好英語會對你的前途有影響。XI. Summary. Exercises. 根據(jù)句意及所給首字母提示，補全句中所缺單詞。1. C          &

29、#160;      can be used to produce electricity.2. The new car c                 a lot of money, but it was certainly worth it.3. There is a w      

30、;           bed, a table and two chairs in this small room.4. It is a very clean city. You will hardly find l                when you walk along the street.5. M

31、y uncle is a great f                 and he caught four fish this morning.6. Some cups in the shop are nice and expensive and the others are u          

32、60;      and cheap.7. Living in this street has a lot of a                . The only drawback (弊端) is noise. 根據(jù)句意，從方框中選擇恰當(dāng)?shù)亩陶Z填空，有的需要變換形式。write to, lead to, clean up, cut down, play a part in

33、1. What a mess! You should _ your room now.2. Every farmer knows that weather _ farming.3. As we all know, smoking too much can _ cancer and many other illnesses.4. He said he would _ us when he left home but we haven't heard from him so far.5. The manager asked me to _ the report, because he di

34、dn't want to speak too long at the meeting. 根據(jù)漢語意思完成英語句子，每空一詞。1. 牛奶對孩子們的健康有好處。Milk _ _ _ children's health.2. 辛迪，請記得幫我寄信。Cindy, please _ _ _ me send the letter.3. 剛才喬重重地摔到樓梯下面。Joe landed heavily _ _ _ _ the stairs just now.4. 我們沒有茶。你愿意喝點咖啡代替茶嗎？We don't have any t

35、ea. Would you like coffee _ _ tea?  5. 人們普遍認(rèn)為，教育會對一個人的生活產(chǎn)生影響。People generally agree that education can _ _ _ _ a person's life.Think aboutThe earth is badly polluted. Please make a poster and think of what we can do.Homework1. Write a short passage about how to protect our environ

36、ment.2. Preview the article on page 99.Section A 2 (3a-3c)Learning objectives1. To have the awareness of protecting the sharks and respecting nature.2. To understand the passage about the endangered animal sharks.3. To learn to use some words and expressions.I. RevisionTranslation.甚至是河底都滿是垃圾。這個小鎮(zhèn)上的每

37、個人都應(yīng)該參加打掃。騎自行車有其它的優(yōu)點。我買外賣食品從來不拿木筷子和塑料叉子。II. Warming up 1. T: 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 which are endan

38、gered. We should do something to protect the animals and the environment! III. Discussion1. What do you know about shark(鯊魚)?2. Do you think sharks can be endangered? Why?3. What do you think might cause a fall in the number of sharks?IV. Reading1. Listen and match the main ideas. Talk about shark f

39、in soup. Sharks are endangered now. Call on people against eating shark fins.2. True or false. (Paragraph 1)Sharks fin（魚鰭）soup is famous and expensive all around the world.Youre killing a whole shark when you enjoy a bowl of shark fin soup.3. Read Paragraph 2 and fill in the chart.4. True or false.

40、(Paragraph 3)1. WildAid and the WWF are environmental protection groups in China.2. Two environmental groups call on the government to establish laws to stop the sale of shark fins.3. Sharks fins are good for health.5. Complete the fact sheet in 3a. Where shark fin soup is popular Number of sha

41、rks caughtand traded every yearHow government can help Two environmental groups which are against “finning”6. Retell the passage. sharks fin soup, in southern China each time cut off no longer not onlybut also at the top drop be endangered the strongest around 70 million fallen by over 90 percent Wi

42、ldAid and the WWF develop laws scientific studiesV. Practice (Work on 3b)1. Read the passage and fill in the blanks with the words in the 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 numb

43、ers drop, the oceans ecosystem will be in danger.3) Many think that sharks are too strong to be endangered, _ they are wrong.4) _ there 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 s

44、top the sale of shark fins.2. Group WorkWhat can we do to save the sharks? Work with your partner and make a poster about shark protection.VI. Language points1. A shark can no longer swim and slowly dies. 鯊魚不能再游泳然后慢慢死掉。no longer 不再 = notany longer/ not any moreno longer通常位于實義動詞之前，be動詞、助動詞或情態(tài)動詞之后 。no

45、t . any longer/anymore中的any longer/anymore總是放在句末。no longer與not . any longer可以互換。 e.g. Mr Brown no longer works here. = Mr Brown doesnt work here any longer/ any more.Joe no longer likes dancing. _Joe doesnt like dancing any longer/ any more.2. This method is not only cruel, but also harmful to the e

46、nvironment. 這種方法不但殘忍而且對環(huán)境有害。1）not onlybut also用于連接兩個表示并列關(guān)系的成分，著重強調(diào)后者，其意為“不僅而且”; 其中的also有時可以省略。Not only does my sister sing well, but she dances well.我姐姐不但歌唱得好，而且舞也跳得好。Not only the students but also the teacher is working hard.不僅學(xué)生們在努力，而且那位老師也在努力。當(dāng)not only置于句首時，常用_。 倒裝語序not only. but also.連接兩個主語時，謂語動

47、詞需與_那個主語在人稱和數(shù)上保持一致，就近原則。后面【運用】同義句轉(zhuǎn)換，每空一詞。(1)She and I have already been to Beijing. _ _ she _ _ I have already been to Beijing. Not only but also (2)He likes to swim and he wants to teach the kids to swim, too.Not only _ _ _ to swim, _ he wants to teach the kids to swim. does he like but(3) The twin

48、s were late this morning. Sam was late this morning, too.  Not only the twins _ _ Sam _ late this morning. but alsowas _ _ Sam but also the twins _ late this morning. Not onlywere 2) be harmful to 對 有害 be bad for 對有害 e.g. Smoking is harmful to the health. 吸煙有害健康。 Playing computer games much is

49、harmful to students. 電腦游戲玩太多對學(xué)生有害。3. Sharks are at the top of the food chain in the oceans ecosystem. 鯊魚位于海洋生物系統(tǒng)食物鏈的頂部。at the top of 在.最高地位; 用最高最大的(速度, 聲音等) e.g. He shouted at the top of his voice in order that he might be heard. 他盡力大聲叫喊, 以便別人能聽見。4. If their numbers drop too low, it will bring dange

50、r to all ocean life. 如果它們的數(shù)目降至過低，會給所有海洋生物帶來危險。此句復(fù)數(shù)形式的number表達(dá)全海洋中鯊魚的總量。In that country, the number of children going to school is higher in cities than in towns and village.在那個國家，城市兒童入學(xué)人數(shù)比鄉(xiāng)鎮(zhèn)及農(nóng)村要高。當(dāng)表示數(shù)值的高或低時，number要用_修飾。常與number搭配的動詞有g(shù)row, fall等。high或 lowe.g. 近來擁有轎車的家庭數(shù)量增長很快。_The number of families t

51、hat own cars has been growing quickly recently. Summary1. 把垃圾扔到河里2. 在中起作用3. 在中國南部 4. 對有害5. 在頂部 6. 海洋生態(tài)系統(tǒng)Homework1. Review the new words and expressions youve learned today.2. Write 5 measures to protect the environment.Section A 3 (Grammar Focus-4c)Learning objectivesTo review the use of The Present

52、 Continuous Tense, passive voice, Present Perfect and Modal Verbs.I. Revision1. Check if you know these phrases. 不同種類的污染 河底 把垃圾扔到河里 在中起作用 在中國南部 對有害 在頂部 海洋生態(tài)系統(tǒng)2. Translation. 甚至河底都滿是垃圾。 這個方法不僅殘酷還對環(huán)境有害。 鯊魚處于海洋食物鏈的頂部。 許多人相信魚翅對健康有好處。II. Grammar FocusPay attention to the sentences.1) Were trying to save

53、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. They are playing basketball. Nancy is working on a new book about stories in schools. Why are you always coming late fo

54、r class? 現(xiàn)在進(jìn)行時: Present Progressive定義：表示說話時（瞬間）正在進(jìn)行的動作，也表示目前或現(xiàn)階段一直進(jìn)行的動作。結(jié)構(gòu): be (am/is/ are) + v.-ing標(biāo)志詞：Look, Listen, now, right nowe.g. Look! The boy is crying.2. used to do與be used to doingused to do sth. 表示過去常常做某事, 而現(xiàn)在往往不做了, 后接動詞原形。be used to doing sth. 表示習(xí)慣于做某事。e.g. I used to get up at six ocloc

55、k. Joe is used to drinking a cup of coffee every morning.3. My grandfather built this house in 1930. This house was built (by my grandfather) in 1930.主動語態(tài)表示主語是動作的執(zhí)行者,被動語態(tài)表示主語是動作的承受者。 被動語態(tài)：Passive voice定義：表示主語是動作的承受者，即行為動作的對象的一種語態(tài)。結(jié)構(gòu)：be + 過去分詞e.g. A new school was built last year. Our classroom is cl

56、eaned every day.一般現(xiàn)在時的被動語態(tài)：am/is/are + V-ed一般過去時的被動語態(tài)：was/were+ V-ed一般將來時的被動語態(tài)：will/shall+be+ V-ed不可以變成被動語態(tài)的情況 1. 某些感官動詞加形容詞及少數(shù)其他的動詞與一些副詞連用表示被動意義。 smell, taste, prove, sell, etc. 1) The dish tastes delicious. 2) The theory proved right at last. 3) The book is so interesting that it sells well. 4) The pen writes well. 2. need做實意動詞時，need + V- ing 主動形式表示被動意義。 我的車需要修理。 My car needs repairing. (= to be repaired). 3. 通常只有及物動詞（組）才有被動 語態(tài)，不及物動詞沒有。戰(zhàn)爭爆發(fā)