ACT-English 第二章. 第九讲

Unit9Ⅰ.Lead in1.In different periods and different places, people may react differently. When two cyclistsbump into each other, they may have a bad fall off their bikes. Then they may point their index fingers at each other, yelling, "You bastard, don't you know how to ride a bike?" or "You should be more careful in the future; you might be hit by a car." Some other people may accuse or curse at each other. Sometimes they may threaten each other with fists, but often they can easily be parted by the watching crowd, uttering something like "Let's wait and see"before they leave. Some people may give priority to their "face" or personal dignity, hence they may exchange blows and kicks instead of hot words to vent their irritation. With social progress and the quickening pace of life, however, fewer and fewer people resort to violence force over such trivial matters. After all, time is money.2.Often it is necessary to wear seatbelts, especially when we are driving fast on the highway.When a car suddenly stops, the driver without a belt will be thrown forward. If the car has been driving at a high speed, the driver may be thrown through the windshield, killing himself.When a vehicle is driving at a slow speed, for example, in the city center, it is also wise to wear seatbelts. Although your car may be moving at a snail's pace, a reckless driver might suddenly smash into you. So, I think wearing seatbelts is essential when the vehicle is moving at a fast speed, and advisable even when the vehicle is driving at a slow speed.3.Speeding should be punished for a variety of reasons. Driving too fast, one may not reactquickly enough to avoid an accident. Also, when you suddenly accelerate beyond the speed limit, others may not expect it. You are then inviting trouble. Moreover, if you exceed the speed limit in violation of the traffic regulations, you set a bad example. Your friends and colleagues may follow suit. Even if they do not, they may look down on you, thinking that you are not a responsible citizen.4.To begin with, we have to give much promotion to the importance of traffic safety. This issignificant not only to you, but also to your family and the public in general. An accident can ruin your life, the lives of your loved ones and many other lives as well. Second, we should warn our friends and relatives not to drink alcohol before driving. More importantly, the police should constantly watch out for drunk drivers, stop them, measure the alcohol levels in their blood, and punish them according to the law. If all those measures are taken simultaneously, the cases of drunk driving will surely decrease.Ⅱ.Listening SkillsItalian investigators are trying to discover what caused a small private plane to crash into Milan's tallest building on Thursday, killing at least three, injuring dozens more and making a big hole in the 32-story building.The aircraft was piloted by a 68-year-old Swiss man. It hit the 26th floor of the tower in an apparent accident at 5:48 p.m., 18 minutes after taking off, Italian officials said.An Italian police officer said they had no evidence of a link to terrorism. An intelligence official in Washington told the media that, in spite of past warnings, there was no information about a possible terrorist attack aiming at Italy.Milan fire brigade officials said the aircraft had only the pilot and no passengers, according to the flight plan. It was on fire as it flew into the tower. There was an explosion in the building when the four-seat plane hit, but there was no danger that the building would collapse, the police said.Ⅲ.Listening InTask1.The SeatbeltLisa: Do you wear the seatbelt every time you drive or ride in a car?Mike: No, seatbelts are for chickens. Besides, I'm a great driver.Lisa: The chances of being injured in a car accident this year are 1 in 75. I think that's worth thinking about seriously.Mike: Have you ever been involved in an automobile accident?Lisa: Only once. My car slid on a rainy night and went off the road. Fortunately I was wearing my seatbelt.Mike: I've never had a serious accident.Lisa: My brother was more unlucky than I was. Last December he was almost killed in an accident. He was in the back seat of his friend's car when it rolled. He wasn't wearing a seatbelt.Mike: Wow, that's terrible.Lisa: Fastening your seatbelt should be an automatic thing as soon as you get into your car. But too many people still refuse to wear seatbelts.Mike: It's just hard for me to get in the habit of wearing one.Lisa: All it takes is one close-call and you'll wear your seatbelt.Mike: O.K., I've got the message. From now on I'll hook up my seatbelt.Task2.How many parachutes are left?There were three passengers in a plane that had a sudden engine trouble. One was the smartest man in the world, another was a lawyer, and the other was a little girl. The pilot told them they must jump out to lighten the weight on board; otherwise, the plane would crash. However, there were only two parachutes. The smartest man in the world jumped to his feet and shouted, "The people who would benefit the world the most should get the parachutes. I'm the smartest man, so I'm one of those." With that, he seized a parachute and threw himself out of the plane.\r\nThe lawyer looked at the little girl and said, "I've led a good long life, and you're just starting yours. You take the other parachute."With tears in her eyes, the little girl said, "That smart man was very unreasonable. Just now he grabbed my school bag and jumped out. Mom will scold me for losing the bag. But at least I have a parachute."Task3.Why did you stop at a green light?One day, two friends were driving downtown when they came to an intersection with a traffic light. The light was red but the driver sped right through the red light. The passenger looked in terror at the driver and shouted, "What the hell are you doing? You're going to get us killed!!" The driver replied, "Don't worry, my mom always drives like this, and she is all right." Later, they came to another traffic light, and that too was red. Again the driver shot right through the light. Again the passenger looked at the driver and shouted, "I thought I have told you, you would get us killed! Would you please stop this nonsense!?"The driver looked at the passenger and answered, "All right! I get it, but I told you my mom drove like this all the time! And she's quite OK."They came to another traffic light. It was green. The driver slammed on the brakes, suddenly stopping the car. The passenger was thrown forward. "What on earth are you doing?" he screamed. "This is the third time you almost got us killed. Why did you stop at a green light?" "Well," said the driver, "my mom might be coming the other way."Ⅳ.let’s talkSpeeding TicketA policeman stops a driver and says to the driver, "Sir, you were speeding. Can I see your license, please?"The driver replies, "I don't have one.""You don't have one?"The driver answers, "I lost it for drunk driving."The policeman is surprised. "I see. Will you show me your vehicle registration papers, please?" "I'm sorry, I can't do that."The policeman asks, "Why not?""I stole this car."The officer says, "Stole it?"The driver answers, "Yes, and I killed the owner."The officer is shocked. "You did what?""She's in the trunk if you want to see."The officer is horrified and calls for backup. Within minutes, five police cars show up, surrounding the car. A police chief cautiously approaches the car, asking, "Sir, could you open the trunk of your car, please?"The driver opens the trunk, revealing nothing but an empty trunk.The chief says, "Is this your car, sir?"The driver says "Yes," and hands over the registration papers.The officer is quite surprised. "One of my officers says you don't have a driving license."The driver quickly produces his license. The chief examines it and finds nothing wrong. He looks puzzled. "Thank you, sir. One of my officers told me you didn't have a license, stole this car, and murdered the owner."The man replies, "I bet the lying bastard told you I was speeding, too!"Ⅵ.further listening and speakingEmergency CallOperator: Hello. This is the emergency 911 operator.Taxi Driver: Help! Help! Please help me!Operator: Yes sir. Please calm down and explain exactly what is happening.Taxi Driver: Calm down! My car has broken down on the highway; I have a lady passenger, and she's going into labor.Operator: Now relax, sir. Explain exactly where you are.Taxi Driver: I'm..I'm in the southbound lane of No. 15 Expressway, about 15 miles from the tunnel, and this lady isn't going to wait.Operator: Okay. What's your name, sir, and your passenger's?Taxi Driver: It's.. It's Mike, and I have no idea about the woman. She's in no condition to tell me. How soon can someone get here?Operator: I've just sent an ambulance to your location. They should be there any second. Taxi Driver: Hey, is there anything I can do while we wait for the ambulance?Operator: Yes, uh, keep her calm and warm.Have a drink!Taxi Driver: Okay. Please hurry.. Oh, they're too late. It's a boy!In the middle of the night, in the middle of nowhere, a woman and a man are involved in a car accident. Both of their cars are damaged, but surprisingly neither of them is hurt.After they climb out of their cars, the woman says, "So you're a man. That's interesting. I'm a woman. Wow, just look at our cars! There's nothing left. But fortunately we're not injured. This must be a sign from God that we should meet and be friends and live together in peace for the rest of our days."The man replies, " I agree with you completely. This must be a sign from God!"The woman continues, "And look at this, here's another miracle. My car is completely destroyed, but this bottle of wine didn't break. Surely God wants us to drink this wine and celebrate our good luck."Then she hands the bottle to the man. The man nods his head in agreement, opens it, takes a few large drinks, and then hands it back to the woman. The woman takes the bottle, immediately puts the cork back in the bottle, and puts it away. The man asks, "Aren't you having any?" The woman replies, "Yes, but not until the police get here."Max, a farm boy, accidentally overturned his wagon loaded with corn. The farmer who lived nearby heard the noise.Pa Won't Like It"Hey, Max!" the farmer shouted. "Forget your troubles. Come in with us, then I'll help you get the wagon up.""That's mighty nice of you," Max answered, "but I don't think pa would like me to.""Come on," the farmer insisted."Well, okay," the boy finally agreed, and added, "but pa won't like it."After a hearty dinner, Max thanked his host. "I feel a lot better now, but I know pa is going to be really upset.""Don't be silly!" the neighbor said with a smile. "By the way, where is your pa?""Under the wagon."。

Unit9Facing Life's Challenges课后习题参考答案Text AI.1.C 2.C 3.A 4.C 5.AII.Section A1.despair2.negative3.individually4.tougher5.incredible6.symbolizeSection B1.leaped2.arose3.lost4.paced5.through6.positive Section C1.with2.up3.over4.with5.like6.toⅢ.1.struggling 2.arose 3.respectively 4.turned 5.observed6.tasted7.weak8.inside9.circumstance10.worst IV.Section A1.instead of waiting till tomorrow2.overseas investment has a positive effect on export3.look back on my high-school days4.you will end up in trouble5.he wasn’t able to keep up with other students in his homework Section B恐惧和缺乏自信决定了我们相互交往和工作的方式。

工作单位是冷酷的地方，你需要自己保护自己。

要想在这场比赛中获胜，就要自力更生、有责任心、充满自信、意志坚定。

首先，你要正确评价自己，意识到自己的价值。

否则的话，一句话，你就有麻烦了。

不管从事什么职业，要想成功就必须有自信心。

这就是为什么你发现有些人没有什么天赋，但是内在动力很强大，比那些有天赋的人所取得的成功大得多。

有了积极的思维，就有积极的态度、反应和情绪，这反过来就会促进成功。

另一方面，态度消极、充满恐惧、疑虑重重、忧心忡忡，这样以来行为会更加消极。

Lesson 9 A cold welcome 冷遇On Wednesday evening, we went to the Town Hall. It was the last day of the year and a large crowd of people had gathered under the Town Hall clock. It would strike twelve in twenty minutes’ time. Fifteen minutes passed and then, at five to twelve, the clock stopped. The big minute hand did not move. We waited and waited, but nothing happened. Suddenly someone shouted. ‘It’s two minutes past twelve! The clock has stopped!’ I looked at my watch. It was true. The big clock refused to welcome the New Year. At that moment, everybody began to laugh and sing. Comprehension1 The crowd gathered under the clock because __________(a) it was twenty to twelve(b) they wanted to welcome the New Year(c) it was Wednesday evening(d) the clock had stopped2 They realized the clock had stopped __________(a) before midnight (b) after midnight (c) at midnight (d) just in time Structure3 They went to the Town Hall on Wednesday evening. They went________(a) the evening (b) on the evening (c) evening (d) in the evening4 The people _______ under the Town Hall clock.(a) were (b) was (c) is (d) be5 ______ will it strike In twenty minutes’ time(a) When (b) How long (c) How long ago (d) How much6 What time did it stop _____ five to twelve.(a) On (b) At (c) In (d) During7 Did ______ happen No, nothing happened.(a) nothing (b)anything (c) any (d) a thing Vocabulary8 How many times did the clock ______(a) hit (b) beat (c) knock (d) strike9 It was fifteen minutes_____ eleven.(a) pass (b) past (c) passed (d) pasted10 A clock usually has two hands, a minute hand and _______ hand.(a) a second (b) an hour (c) a time (d) a big11 Most people wear or carry _______(a) an alarm clock (b) an alarm (c) a clock (d) a watch12 It refused to welcome the New Year. It ________(a) denied it (b) wanted to (c) didn’t want to (d) wished to New words and expressions 生词和短语welcome n. 欢迎；v. 欢迎crowd n. 人群gather v. 聚集hand n. （表或机器的）指针shout v. 喊叫refuse v. 拒绝laugh v. 笑。

Unit 9 Do your own things辅导讲义3.Where are you ________ do?你将要去哪里？--I________go to the doctor’s. 我将要去看医生。

✷重点知识点Key Points一．时间介词in on atat about 5:30, 表示在某一时间点用介词“at”( at 7 o’clock )具体到某天用介词“on”没有具体到某天，用介词in二、时态I run. 我跑步。

I am running. 我正在跑步。

I am going to run. 我将要去跑步。

孩子们看看上面的三句例句，有发现规律了吗？一般现在时：由动词原形或动词第三人称单数构成现在进行时：由be+动词ing形式一般将来时：由be+going to+动词原形或will +动词原形（初一学）三、wantI want to swim. I________run. I ________jump.I want you to swim. I________swim. I________jump.孩子们有没有发现，want+to+动词原形，表示想要去做什么事。

want+某人+to+动词原形，表示想要某人去做什么✷文化知识CultureRed Zone“Red Z one”是禁区Part 2:知识测验一．基础达标：根据括号内所给词的适当形式填空。

1. I want you to_______(go)to the post office and buy some stamps.2. I have _________(hundred)of dreams.。

Unit 9 What Is HappinessSection One Pre-reading ActivitiesII. Cultural information1. QuoteHappiness lies not in the mere possession of money; it lies in the joy of achievement, in the thrill of creative effort.— Franklin Roosevelt2. The Pursuit of HappinessThe Pursuit of Happiness is a 2006 American biographical film directed by Gabriele Muccino about the on-and-off-homeless salesman-turned stockbroker Chris Gardner. The screenplay by Steven Conrad is based on the best-selling memoir of the same name written by Chris Gardner with Quincy Troupe. The film was released on December 15, 2006, by Columbia Pictures.Chris Gardner is a bright and talented, but marginally employed salesman. Struggling to make ends meet, Gardner finds himself and his five-year-old son evicted from their San Francisco apartment with nowhere to go. When Gardner lands an internship at a prestigious stock brokerage firm, he and his son endure many hardships, including living in shelters, in pursuit of his dream of a better life for the two of them.Section Two Global ReadingI Text analysis1.What‘s the author‘s answer to the question ―What is happiness‖?According to the author, happiness lies in the idea of becoming, in the meaningful pursuit of what is life-engaging and life-revealing.2.What‘s the author‘s purpose of writing?To attempt a definition of happiness by setting some extremes to the idea and then working in toward the middle.II Structural analysisSection Three Detailed ReadingText IWhat Is Happiness?John Ciardi(abridged)1The right to pursue happiness is issued to Americans with their birth certificates, but no one seems quite sure which way it runs. It may be we are issued a hunting license but offered no game.1Jonathan Swift seemed to think so when he attacked the idea of happiness as “the possession of being well-deceived,” the felicity of being “a fool among knaves.” For Swift saw society as Vanity Fair, the land of false goals.2It is, of course, un-American to think in terms of fools and knaves.2 We do, however, seem to be dedicated to the idea of buying our way to happiness. We shall all have made it to Heaven when we possess enough.33And at the same time the forces of American commercialism are hugely dedicated to making us deliberately unhappy. Advertising is one of our major industries, and advertising exists not to satisfy desires but to create them — and to create them faster than any man’s budget can satisfy them. For that matter, our whole economy is based on a dedicated insatiability. We are taught that to possess is to be happy, and then we are made to want.We are even told it is our duty to want. It was only a few years ago, to cite a single example, that car dealers across the country were flying banners that read "You Auto Buy Now."They were calling upon Americans, as an act approaching patriotism, to buy at once, with money they did not have, automobiles they did not really need, and which they would be required to grow tired of by the time the next year’s models were released.4Or look at any of the women’s magazines. There, as Bernard DeVoto once pointed out, advertising begins as poetry in the front pages and ends as pharmacopoeia and therapy in the back pages. The poetry of the front matter is the dream of perfect beauty. This is the baby skin that must be hers. These, the flawless teeth. This, the perfumed breath she must exhale. This, the sixteen-year-old figure she must display at forty, at fifty, at sixty, and forever.5Once past the vaguely uplifting fiction and feature articles, the reader finds the other face of the dream in the back matter. This is the harness into which Mother must strap herself in order to display that perfect figure. These, the chin straps she must sleep in. This is the salve that restores all, this is her laxative, these are the tablets that melt away fat,these are the hormones of perpetual youth, these are the stockings that hide varicose veins.6Obviously no half-sane person can be completely persuaded4 either by such poetry or by such pharmacopoeia and orthopedics. Yet someone is obviously trying to buy the dream as offered and spending billions every year in the attempt. Clearly the happiness-market is not running out of customers, but what are they trying to buy?7The idea "happiness," to be sure, will not sit still for easy definitions: the best one can do is to try to set some extremes to the idea and then work in toward the middle.5 To think of happiness as acquisitive and competitive will do to set the materialistic extreme.6To think of it as the idea one senses in, say, a holy man of India will do to set the spiritual extreme. That holy man’s ideal of happiness is in needing nothing from outside himself. In wanting nothing, he lacks nothing. He sits immobile, rapt in contemplation, free even of his own body.7Or nearly free of it. If devout admirers bring him food, he eats it; if not, he starves indifferently. Why be concerned? What is physical is an illusion to him.Contemplation is his joy and he achieves it through a fantastically demanding discipline, the accomplishment of which is itself a joy within him.88But, perhaps because I am Western, I doubt such catatonic happiness, as I doubt the dreams of the happiness-market. What is certain is that his way of happiness would be torture to almost any Western man. Yet these extremes will still serve to frame the area within which all of us must find some sort of balance. Thoreau —a creature of both Eastern and Western thought — had his own firm sense of that balance. His aim was to save on the low levels in order to spend on the high.99Possession for its own sake or in competition with the rest of the neighborhood would have been Thoreau’s idea of the low levels. The active discipline of heightening one’s perception of what is enduring in nature would have been his idea of the high.10 What he saved from the low was time and effort he could spend on the high. Thoreau certainly disapproved of starvation, but he would put into feeding himself only as much effort as would keep him functioning for more important efforts.10Happiness is never more than partial.11There are no pure states of mankind.Whatever else happiness may be, it is neither in having nor in being, but in becoming.12 What the Founding Fathers declared for us as an inherent right, we should do well to remember, was not happiness but the pursuit of happiness. What they might have underlined, could they have foreseen the happiness-market, is the cardinal fact that happiness is in the pursuit itself, in the meaningful pursuit of what is life-engaging and life-revealing,13 which is to say, in the idea of becoming. A nation is not measured by what it possesses or wants to possess, but by what it wants to become.Paragraphs 1-2Questions1. What does the author mean when he says ―The right to pursue happiness is issued to Americans with their birth certificates‖? (Paragraph 1)Here the author alludes to the well-known statement in the Declaration of Independence of the United States of America: ―We hold these truths to be self-evident, that all men are created equal, that they are endowed by their Creator with certain unalienable Rights, that among theseare Life, Liberty, and the pursuit of Happiness.‖ The sentence means that everyone is born with the right to pursue happiness.2. What do the quoted expressions from Swift mean? (Paragraph 1)Both expressions ―the possession of being well deceived‖ and ―a fool among knaves‖ are used by Swift to describe a conception of happiness, i.e., a state of being deceived. The word ―possession‖ here means ―a state o f being completely under the influence of an idea or emotion‖and in this particular expression ―the state of being deceived.‖―A fool among knaves‖ refers toa person who is easily deceived without realizing it.3. Why does the author say, ―It is, of course, un-American to think in terms of fools and knaves‖? (Paragraph 2)Because most Americans take it for granted that pursuing happiness, or buying their way to it is in accordance with American national character.Words and Expressions1. pursue vt. try to achieve somethinge.g. He urges all sides in the conflict to pursue peace.We are working together to pursue a common goal.Derivation:pursuit n.Collocation:in the pursuit ofe.g. She showed steadiness and courage in the pursuit of her aims.2. issue vt. to provide sb. with the things they need for a particular actione.g. The police in Britain are not usually issued with guns.Visitors are issued with identity cards to wear inside the factory.Collocation:issue sth. (to sb.) 将某物发给、供给或分配给某人使用e.g. The office will be issuing permits on Tuesday and Thursday mornings.Derivation:issue n.Sentences1. It may be we are issued a hunting license but offered no game. (Paragraph 1)Explanation: It may be we are given the right of pursuing happiness but we don‘t know where it is, because maybe there is no happiness as such at all. Note ―game‖ origin ally refers to a wild animal or bird hunted for sport. Here it is a metaphor for what is being pursued, i.e. happiness. It is roughly equivalent to ―false goals‖ at the end of this paragraph.Paraphrase:It may be that you have received the license for hunting but you don‘t have the chance to hunt.Translation: 它可能就像：授予了你打猎的许可证却不给你提供打猎的机会。

Unit9Text Abroaden v.放宽, 变宽, 扩大, 加宽 broad a.efficient a.生效的，有效率的，能干的 efficiency n.reside vi.居住 residence n. 住宅submit v.(使)服从, (使)顺从(常与to连用 )vt.提交, 递交e.g. I hope you can submit your term papers before the deadline.notch vt.可凹痕，切口，得分 notch up 扩展，完成，创下，达到fundamental adj.基础的, 基本的n.基本原则, 基本原理underestimate vt.低估, 看轻n.低估estimate v.估计, 估价, 评估n.估计, 估价, 评估overestimate vt.评价过高We couldn’t underestimate the enemy’s strength because they had made good preparations.display vt.陈列, 展览, 显示n.陈列, 展览, 显示,显示器monitor n.班长, 监听器, 监视器, 监控器vt.监控v.监控We have been monitoring the enemy’s radio broadcasts to try to find out their sacret plans.commonplace n.平凡的事, 平常话adj.平凡的Some scientists believe that soon it will be commonplace for people to travel to the moon.attempt n.努力, 尝试, 企图vt.尝试, 企图pessimistic adj.悲观的, 厌世的 pessimism n.Whenever you come across difficulty, you should not be pessimistic. apply for 请求，申请put up 举起，抬起；提供bring in 生产；挣得；介绍引进connect up 连起来，接上in effect 事实上，实际上sort through 归类end up 结束，竖着check on 检查The Web Lifestyle 网络生活方式Today in the United States，there are over 22 million adults using the Web，about half of whom access the Internet at least once a day．当今美国有2200万个成年人在使用网络，他们中大约半数人要每天至少上互联网一次。

各位专家、评委，早上好！今天我说课的内容是全日制普通高级中学教科书（必修）高二英语第二册上unit 9 的综合技能部分。

我将从以下几个方面进行说课：一．教材分析本课是综合技能，在整个单元的教学中起着重要作用。

通过本课的学习，学生能提高他们的英语听说能力，了解更多关于环境保护的知识，认识到保护地球环境的重要性。

二．学生情况分析本单元的设计与实施是建立在学生经过高一学习基础之上。

学生已经逐步的适应了在活动与任务中学习英语以及如何处理语言知识与活动开展的关系。

并且，他们也已经形成并培养了一定的小组合作学习及自主学习的能力。

三．教学目标根据大纲的要求，我将教学目标制定如下：1）认知目标：理解文章主旨。

掌握一些重要单词和动词短语的用法，如defend, incorrect, affect, advise2）能力目标：训练学生的英语听、说能力，学会写一篇评论短文(evaluation paragraph)。

3）情感目标：引导学生应树立爱护地球、保护环境，防止污染的意识。

教学重点：1.掌握本课出现的重点词汇和短语；2.学会如何在口语表达和写作中用英语来支撑自己的观点。

教学难点：如何帮助学生在完成每项教学任务的同时提高他们的语言运用能力。

四．教学方法我将在课堂上采取交际教学法，组织“提问-回答”，“读-听”，“自由讨论”等课堂活动培养和强化学生的语言实践能力和自主学习能力。

此外，“学习知识的过程远比学习知识本身更重要”。

在向学生传授知识的过程中还有引导他们树立环保意识。

五、教学手段教具主要包括录音机，多媒体和黑板。

六. 教学步骤Step 1 新课导入学生在本单元已经学习了有关地球高峰会和环境保护的文章，让学生以小组的形式进行“头脑风暴”，列出保护地球环境的措施：（Laws should be made to make pollution illegal. Try to be clean in our daily activities. Use environmentally safe products. Dispose of trash properly. Recycle household waste, yard waste, and hazardous chemicals. Don’t pour waste waterinto rivers and lakes without being cleaned. Recycle the used battery. Use paper bags instead of plastic bags.）然后让学生陈述，老师对学生的陈述进行总结，并引出本课的主题：”Voices of the Earth Summit” (by saying: “We know the Earth Summit mainly talks about environment problems and solutions. Experts from all over the world are welcome to the Earth Summit, speaking about different topics and discussing new ways to solve old problems. Today we are going to listen to the voices of the Earth Summit.”)目的：通过头脑风暴的形式引入课题，能激发学生的学习兴趣，同时让学生陈述观点可以训练学生的口语表达能力。