懂你英语L3U3.doc

懂你Level 3L3U31/4listeningLife on earth/human beingA1.There are many forms of life on earth including human beings.2.Life exist in a variety of conditions.3. Some forms of life live in a watery environment, like the oceans.4. Other forms of life can be found in very dry areas like deserts.5.However for any form of life to exist, conditions must be right.6. When conditions arent right, that form of life will become extinct(灭绝).7. To become extinct means to die out completely.B1. Conditions must be right for life to exist.2. Millions of years ago, there were forms of life that no longer exist.3. When conditions changes, these forms of life died out.4. One extinction event happened about 250 million years ago.5. This was the largest extinction event of all time.6. Many forms of life became extinct.7. 96% of all life in the oceans died out.8. Most insect also became extinct.9. This event happened over a period of several million years.C1. The causes of this extinctions event are still unknow.2. Possible cause includes large volcanic eruptions and global warming.3. Some scientists believe that there were several causes.4. They believe that a series of events caused the extinctions.5. Sciences are working to better understand what really happened.D1. In modern times, we humans face changing conditions.2. For humans to live we need clean air and clean water.3. Pollutions is now a growing problem around the world.4. Pollution poisons（毒药，污染） the air and water that we depend on.5. Polluted air makes people sick and afraid to go outside.6. Polluted water poisons our food supply.7. As a result, we never know which foods are safe to eat.8. Human being cannot live in a poisoned environment.9. Therefore, pollution is major threat to our exitance. E1. Humans need temperature to be in a comfortable range.2. To be in a comfortable range means to be neither too hot nor too cold.3. With global warming global temperatures are rising.4. As temperatures rise, the polar icecaps will melt.5. As the polar icecaps melt, ocean levels will rise.6. Areas of some countries will soon be under water.7. People will be forced to relocate from flood areas.F1. In nature, even small changes can sometime have large effects.2. Its difficult to predict（预测） whats going to happen.3. The entire ecosystem(生态系统) that we depended on is changing.4. Some of these changes are irreversible(不可逆转的).5. Irreversible changes cannot be undone because they cannot be reversed.G1. Lets hopes that humans are smarts enough to understand how the world is changing.2. With more understanding we can make better choices about what to do.3. We can face the challenges of pollution includes the global warming.4. We need to do this before its too late.5. This planet Earth is our only home, and we need to protect it.6. (读或听)：We need to protect the environment that support us.L3U31/4vacabularyAnimal / appliancesA1. Mammals are covered by hair or fur have a backbone(脊椎) and are warm-blooded.2. All female mammals produce milk for their young.3. Reptiles are covered by scales and it includes snatch, lizards(蜥蜴)and turtles.4. Reptiles(爬行动物) have a backbone and are cold-blooded which means they often rely on external sources of heat.5. Birds are covered by feathers and are warm-blooded.6. Most birds can fly and many types of birds migrate(迁移，移动) great distances.7. Most insects such as ants and bees have a small 3-part body with 3 pair of legs.8. Some insect like mosquitoes(蚊子)， spread diseases that cause the deaths(死，毁灭) of many humans.9. Unlike animals, plants get the energy that they need from the sun.10. Plants convert light energy along with carbon dioxide in the water into chemical energy.11. (听)mammals include some of the most intelligent animals on earth , such as elephants and human beings.12. (听) mosquitoes cause the deaths of more humans than any other animal.13. (听) some insects spread diseases that cause the deaths of many humans.14. (听) cold-blooded animal often rely on external sources of heat.15. (听) most mammals live on land, but some live in the sea.16. (听) insects such as ants and bees live in well-organized colonies.17. (听) insects dont have backbone, and most are cold-blooded.B1. Scales and rulers are used to measure weight and length.2. Units of weight include kilograms and pounds and units of length include centimeter and inches.3. These instruments are used to very large and very small objects.4. Telescopes（望远镜）are used by astronomers and microscopes(显微镜) are used by biologists and doctors.5. These appliances are used in the kitchens of almost every home.6. Stoves are used to heat food and refrigerator are used to keep foods cool or cold.7. House hold tools like these are used to build and repair things.8. Hammers are used to pound in nails and screwdrivers are used to turn a screw.9. (听) we can used a telescope to see object that are far away.10. (听) if you need to pound in a nail , use a hammer.11. (读) Two inches is a little more than five centimeters.12. (听) Rulers are used to measure length.L3-U3-1/4 dialogueAnniversary/ expensive foodA1. Do you know what day it is today?2. What do your mean? Is it a special day?3. Oh, so you dont remember?4. Remember what? Whats the special?5. Its our anniversary.6. We started dating a year ago today.7. Oh, really? Im sorry.B1. Just a minute, what do you think this is?2. Oh, its a necklace.3. Do you like it?4. Yes, I do. Its lovely, especially the read heart.5. May I put it on?6. No, let me do it.C1. So, you did remember.2. Of course, I remember it.3. Its a very special day for both of us.4. I have something for you too.5. You do?6. Yes, but it will have to wait until later.7. Oh, I cant wait, tell me what it is.D1. Can you guess what it is?2. Could you give me a hint?3. We went there six months ago.4. Oh, you met know Alfredos5. Yes, are you excited?6. You said you really like the food there.7. Yes, thats true.8. I also remember that the dessert.9. Do you?10. Yes, but, lets not talk about that.11. Lets now in surprised.练：1. She wont give him her gift until later.2. They arent going to talk about the dessert.3. He remembered that today is their anniversary.4. Do you know what today is?E1. Thats restaurant looks nice.2. Yes, but it looks expensive.3. Lets go in and look at the menu.4. Wow, the menu looks great, especially the fish. 5. Yes, it looks good, but look at those prices.F1. Lets try somewhere else.2. Sometimes its ok to spend a little money.3. Yes, but these prices are a bit too high, dont you think?4. Yes, they are a bit high.5. But dont you think Im worth it? Lets enjoy ourselves.6. Uh, ok, if you put it that way.7. Lets see if we can get a table.8. Im glad you have your credit card.9. I sure hope the food is good.10. Stop worrying, lets just enjoy.练1. he is worried about spending so much money.2. She likes the food choices, especially the fish.L3U32/4listeningQuickServeA1. QuickServe is a home repair company.2. It provides quick reliable repair services to homes.3. QuickServe handles plumbing and electrical issues 24 hours a day.4. It also cleans the roofs, fixes internet connections and replaces broken windows.5. For a small fee, customers subscribe(订阅) to the service.6. Its main customers are the elderly, which means older people.7. Whenever customers have a problem, they can call for help.8. There is also a small service charge for each service call.(对于每一个服务呼叫也有少量的服务费用)B1. The company was established 5 years ago, and is growing rapidly.2. It started in one city, but is now in five cities.3. The company plans to expand to 10 cities within the next 24 months.4. In each city, there is a small central office in a low-rent area of the city.5. The central office handles the business, advertising, payroll(工资单) and billing.6. It also takes calls from customers, either online or by telephone.7. It takes calls 24 hours a day, seven days a week.C1. 60% of the companys employees work from their homes.2. When a customer calls in to the central office, a service employee is contacted.3. The service employee then contacts the customer and sets up an appointment.4. These service employees are highly trained and provide excellent service.5. In emergencies, such as a serious plumbing problem, service can be provided within an hour.6. One reason for this is that the service employees live in different parts of the city.7. They are not centrally located, so its quicker and easier for them to travel to a customers home.D1. QuickServe has an excellent reputation(名声，名誉)2. Its prices are reasonable and its services are quick and efficient(有效率的).3. The companys service employees are clean, polite and efficient（有效率的）.4. In this type of business, person to person contact is the key to success.5. With each satisfied customers, more customers subscribe(签署).6. Satisfied customers recommend Quickserve to their friends.7. This kinds of word-of mouth(口口相传) advertising is very cost effective.8. Cost effective(有效的) means that the results are good without paying a high price.9. In other words, quality service provides its own reward to the company.E1. The company takes great pride(自豪的) in being honest with its customers.2. There are no hidden charges for their services.3. As a result, the number of customers in each city is growing rapidly.4. With the aging population, there are more elder people who need home repair services.5. These people need to have confidence in the service provider.6. They dont want to be cheated(欺诈).7. These people dont mind paying a reasonable fee for high quality service.8. High quality service should be rewarded.9. (听) Customers never want to be cheatedF1. The company provides a range of service plans each with a different subscription(认购) price.2. The least expensive service plan is called the basic plan.3. This plan provides non-emergency services with a very low service charge.4. The most expensive service plan is their VIP plan.5. The VIP plan provides emergency service 24 hours a day with no additional service charge.6. It also provides rebates(回扣) to customers who dont call for any service during the year.7. In addition, Quickserve gives bonus points customers for each year that they subscribe.8. These bonus points can be used to buy new appliances, such as stoves and refrigerators.G1. If the business continues to grow, the owners may decide to take the company public.2. This means that the public can buy shares of the company.3. It will then change from a privately-owned company to a public company.4. The owners believe that their business is successful and can expand around the world.5. They also believe that taking their company public can make them rich.L3U32/4vocabularySubject / natural disasterA1. Biology(生物) is the study of life, including its structure and evolution(演变).2. Biologists study how life survives and reproduces(复制).3. Chemists is the study of matter, including its structure of atoms and molecules.4. Chemists study how various substances interact with each other.5. Astronomy is one of the oldest sciences.6. Astronomers study the structure and evolution of the universe, including the study of stars, planets and galaxies.7. Geology(地质学) is the study of the structure and history of the earth and other planets.8. Geologists study different types of rocks, earthquakes and difference layers(层) of earth.9. Mathematics is the study of numbers shapes patterns and changed.10. Mathematics is used by all other branches(分支) of science.B1. Here are some types of terrible events that hurt or kill people.2. Earthquakes are caused by forces deep within the earth.3. During earthquakes, many people are often killed by collapsing buildings and bridges.4. Floods happen when rivers rise and overflow their banks.5. Floodwaters(洪水) damaged or destroyed many houses and businesses.6. Fires destroy buildings land and forests.7. There are many causes for fire, including lightning.8. In a hurricane, high winds destroy buildings and sometimes cause flooding.9. Some hurricanes have winds of more than two hundred miles an hour.10. Car accidents happen when cars collide(碰撞) or when drivers lose control of their cars.11. One of the main causes of car accidents is driving too fast.L3-U3-2/4 dialogueFix the desk/think about lifeA1. Whats in that big box you carrying?2. Its a new desk.3. I just bought it, and now I have to put it together.4. Do you need any help?5. No, I dont think so.6. I just need to get my tools.7. Ill need a screwdriver and maybe a hammer.8. Dont forget to read the instructions.B1. How are things going?2. I am almost finished.3. Something doesnt look right to me.4. The right side is higher than the left side.5. Oh, youre right.6. It looks like I put a couple of screws into the wrong places.C1. So, now, you have to take off part.2. Great, and I thought I was almost finished.3. I told you to read the instructions.4. Did you read them?5. No, I didnt read them.6. I hate to read the instructions.7. I look at them, but they were confusing.8. Well, this is what happened when you dont.9. Youre too impatiens.10. Anyway, what can I do to help you?11. Could you get another screwdriver and help me unscrew some of these screws?12. Ok, but next time. Please read the instructions.练：1. The desk doesnt look right because one side is higher than the other.D1. Do you ever look at the sky and think about life and the universe?2. I did when I was a kid.3. But I dont do that very much in more.4. Why do you ask?5. Sometimes, I feel like Im lost in day-to-day(日复一日) details.6. Then when I look up at the sky, I see the big picture.7. I appreciate things more, even the little things.E1. You sound like a philosopher or a poet(诗人).2. I felt like that too when I was a kid.3. Dont you feel like that anymore.4. No, I dont, in fact, I try not to.5. When I think about things too deeply I get depressed.6. Its even a bit frightening.7. Really? For me, its just the opposite. Everything seems like a wonderful miracle(奇迹).8. Doesnt that frighten you a bit?9. The universe is so large and we are so small.F1. What are you realize is how little we understand?2. We just need to appreciate our lives and not get lost.3. Sometimes being lost isnt so bad.4. Do you know the expression Ignorance is bliss(无知就是快乐)?5. Sure, Ive heard it many times.6. To be ignorant(没有学识的,无知的,愚昧的,未受教育的;不通世故的) is to be happy.G1. Maybe its true.2. Maybe its best not to think or know too much.3. No, thats not for me.4. I want to understand as much as possible.5. Thats why I became a scientist.6. Well, I respect your choice, but its not for me.7. If understanding is painful, Id rather not understand.练：1. She realizes th at there is a lot that we dont understand. L3U33/4listeningHarry on business tripA1. Harry is on his business trip.2. Yesterday he was supposed to fly from San Francisco to Shang Hai.3. However, things didnt turn out the way they were supposed to.4. In fact, nothing went the way it was supposed to.5. Everything went wrong, and he didnt get on his flight.6. As a result, he still in San Francisco.B1. The following is a summary(总结) of what happened.2. Yesterday morning he got up as usually and had breakfast.3. Everything seemed to be find and he was looking forward to the trip. 4. He was just about to check out of his hotel when he felt a pain. 5. he was a pain in his lower back.6. It was a dull pain at first, not too bad.7. So he did not worry about it and checked out of the hotel.8. Then he got on a shuttle bus to the airport.C1. About halfway to the airport, the pain in his back started to get worse.2. It was a growing pain and he was beginning to worry.3. Soon it was difficult for him to sit in his seat.4. The pain was getting worse.5. He wanted to lie down.6. He started to sweat and breath quickly.7. He was in real pain then.8. On a scale of one to ten, the pain was on an eight.D1. When the bus got to the airport, the bus driver helped him get off.2. It was difficult for him to walk, but he finally made it to the terminal.3. Inside the terminal, he went to the mens bathroom.4. He went to the toilet, but that didnt help.5. Instead of improving he felt dizzy and he threw up.6. By now, he was wet from all his sweating.7. He knew he couldnt get on his flight.E1. He used his phone to call the airline.2. He explained the situation and cancelled his reservation.3. Then he called 911 for emergency help.4. 911 is the emergency number to call for help in the united states.F1. An ambulance arrived about ten minutes after he called.2. By then he was in so much pain that he could barely walk.3. Once inside the ambulance they gave him oxygen to help him breath.4. But the pain was still terrible.5. Then they drove him to a hospital near the airport.6. Luckily, the hospital was on his health plan.7. That means his health insurance is supposed to pay for everything.8. Medical costs in the United States are very high.G1. When he arrived at the hospital, he was taken to the emergency room.2. After some tests, a doctor told him he had a kidney stone.3. It was a very small stone, but it caused a lot of pain.4. It was passing through a small tube in his body from his kidney(肾) to his bladder(膀胱).5. The pa