懂你英语Level 3 unit 2(19页).doc

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1、-懂你英语Level 3 unit 2-第 19 页Level 3 unit 1 part1ListeningMatter is made of atoms and molecules. Water, for example, is the H2O molecule. This means that a molecule of water has 3 atoms. A water molecule has 2 hydrogen atoms and one oxygen atom. Substances like sugar have many atoms in their molecules.

2、A molecule of sugar has many atoms, including carbine, hydrogen and oxygen. -What is H2O?The water molecule.-What is matter made of? -Atoms and moleculesMatter is made of molecules such as the H2O which is the water molecule. Matter can be in one of 3 states, solid, liquid or gas.Water and ice are t

3、he same substance, but they are in different states.These states depend on the temperature of the molecules.When we heat a substance, the molecules move faster and try to take up more space. When we cool a substance, the molecules move more slowly.When we cool a substance to its freezing point, it b

4、ecomes a solid.-How many states of matter are there? -Three. -What happens when we heat a substance? the molecules move faster and try to take up more space. -What happens if we cool a liquid to its freezing point? It becomes a solid. In a solid, the molecules move very little. Their positions are a

5、lmost fixed. To be fixed means that their positions dont change. If we heat the molecules, they move faster and away from each other. The solid begins to melt, like ice cream on a hot day.-How can we change a solid into a liquid? heat it up. -How can we change a liquid into a solid? cool it down. -A

6、t a certain temperature, a solid begins to change into a liquid.The temperature at which a solid changes into a liquid depends on the substances. For water, the solid begins to change into a liquid when its temperature rises to above 0 degrees Celsius. For some substances, such as steel, the tempera

7、ture at which it becomes a liquid is much higher. Steel often melts at around 1370 degrees Celsius. -At what temperature does ice begin to melt? Above 0 degree Celsius. -What does the temperature at which a substance begins to melt depend on? The substances. If we continue to heat a liquid, the mole

8、cules move even faster. At a certain temperature, the liquid begins to change into a gas.For water, the liquid begins to change into a gas at 100 degrees Celsius. That is the boiling point of water. -What happens if we continue to heat a liquid? Molecules move even faster. Inside a star, such as our

9、 sun, the temperature is very high.Everything inside the sun is a gas. According to scientists, there are over 65 elements inside the sun.These include oxygen and iron. Over 90% of the sun is hydrogen gas. -How many elements are inside the sun? More than 65Yesterday, there was an important science t

10、est. Lisa, Tom and 20 other classmates took the test. The test is about the states of matter and how they are different. There were 25 questions on the text and there had 45 minutes to take it. Here are some of the test result. 2 students got perfect scores. The lowest score was 68 out of 100. The a

11、verage score was 86.3. 11 students score higher than average. 11 students have below the average scores. Tom missed 2 question on the test so his score was 92. His score was 8 highest in the class. Lisa missed 2 and a half question so her score is 90. Her score is 10 highest score. Her score is 4 po

12、ints higher than the average score. Lisa was disappointed with her test results.She studied hard for the test but she still didnt do well. As a result, she plans to study harder for next test.The next test will be in about 2 weeks. Tom was surprised and happy with his results. He didnt study hard so

13、 his result was better than he expected. He was also happy that he did better than Lisa did. VocabularyShe is screaming because she is really scared. Something is chasing her so she is screaming for help. He is shouting because he is angry. When hes really angry he often shouts like this. She is sle

14、eping because shes tired. Last night she didnt get enough sleep, so today she has no energy.Shes crying because shes sad. She got some bad news a few minutes ago. Shes smiling because shes happy. Her boyfriend just called and hes returning from a long trip.Who is smiling because she got some good ne

15、ws? This man is hiking up a mountain trail. He is wearing hiking boots and is carrying a pack on his back.This man enjoys cooking. He attends a cooking class once a week. This woman enjoys gardening. She grows flowers, such as roses, and vegetables, such as tomatoes, in her garden. This boy loves pl

16、aying games. He likes all kinds of games, including this video games on his computer.This old couple enjoys travelling. They take several trips a year, often to different countriesDialogueW: Oh, there you are, finally. M: Yeah, Im sorry. W: Why are you so late? You were supposed to be here 30 minute

17、s ago.M: I got on the wrong subway by mistake. -When was he supposed to be there? -30 minutes ago. -Why was he late? He took the wrong subway. W: Why didnt you call? I was really worried. M: I dont have my phone. I left it in the office because I was in such a hurry to get here. W: OK, well, youre h

18、ere now. We dont have much time.M: Yes, well have to hurry. The meeting starts in 15 minutes, right?W:Yes, its supposed to, if everyone gets here on time. -When is the meeting supposed to start? -in 15 minutes.-To hurry means. To go fast. W: Did you read my presentation? M: Yes, I do. Its good, but

19、its a bit too long. Im afraid there wont be enough time for questions. W: Do you have any suggestions? M: Yes, I do. I think the company introduction can be cut in half. They know what we do. W: OK, I wont show the video. Its about 2 minutes long.M: Thats a good idea. The video is on our website and

20、 is not that good any way. -What is she going to cut from her presentation? the video. -Why is the presentation a bit too long? -There isnt enough time for questions. W: Do you have any suggestions? M: No, I dont. Im sure youre doing a great job. Are you ready?W: Yes, Im ready. The meeting room is o

21、n the 21st floor.M: OK, lets go. -Where is the meeting going to be? -in a meeting room. -Shes ready to give her presentation at the meeting.Lisa: How did you do on yesterdays science test?Tom: I did better than expected. How about you?Lisa: I didnt do very well. I expected to do better than I did.To

22、m: What was your score?Lisa: I got a 90. What about you?Tom: I got a 92. I only missed two questions.-How well did he do on the test? He did better than expected. She didnt do as well as she expected. Lisa: So you did better than I did. And I really study for it too.Tom: That is a surprise. You usua

23、lly do better than I do.Lisa: Yes, I wasnt careful. I made one really stupid mistake.Tom: What was it? Lisa: I said 90% of the sun is Helium instead of Hydrogen.Tom: Wow. That was a stupid mistake. -Why was he surprised by the result? He did better than she did. Tom: What was the average score for t

24、he class, do you know?Lisa: The average score was 86.3 and the lowest was 68. Tom:Do you know who got the lowest test score?Lisa: No, I dont. I dont know who got the lowest score.Tom: Its probably a secret. Did anyone get a perfect score?Lisa: I think Ada and Sandi both got perfect score.Tom: Yes, t

25、hey always do well. I wish I were as smart as they are.-What was the average test score? -86.3Level 3 unit 1 part2ListeningIn six weeks Paul is going on a trip. He is going to Japan and China. There are a couple of reasons for the trip. One reason is for business. He is thinking about starting resta

26、urants in both countries.The other reason is for pleasure. He enjoys travelling and hed like to visit some friends.-Whats going to happen in six weeks? -He is going on a trip. -What is he thinking about starting in both countries?He is thinking about starting restaurants. Yesterday he went online an

27、d made airline reservations. There were plenty of seats on the plane, so it was easy. He also got a good discount. Unfortunately, he needs a new passport. His old passport is expiring next week. This is something he didnt expect. Getting a new passport will take at least a week. He needs to apply fo

28、r one right away. -Why did he need to get a new passport? -His old one is expiring soon. -What did he need to do right away? -apply for a new passport. -How long will it take to get a new passport? At least a week. Paul also needs a visa to enter China. The last time he went to China was 3 years ago

29、. 3Getting a visa may also take a week or even two. So he doesnt have much time. He needs to hurry. He cant get the visa until he gets his new passport. Hell have to go to the Chinese consulate in Toronto. Hopefully there wont be any delays. -What may take a week or two? -getting a visa. -When was t

30、he last time he went to China? -3 years ago. Paul has several friends in each country. One of his best friends lives near Mountain Fuji. His friend lives near a beautiful lake about 3 hours from Tokyo.His friend is a great cook and owns a little restaurant.The restaurant is located on a hill above t

31、he lake.It has a wonderful view and the food is wonderful.Paul is looking forward to eating there. Then he will spend the night at his friends house. -Where is Paul going to stay? -Hell stay at his friends house. -What does his friend do? -He owns a restaurant. One way to get to his friends house is

32、 to go by train.If he takes a train his friend will meet him at the train station.Theres a train station about half an hour from his friends house.On the other hand he may decide to go by car.He can rent a car for a few days and see more of the country.He can use a GPS to help him with directions.He

33、 doesnt speak Japanese so the directions need to be in English.-Why do the directions need to be in English? -He doesnt speak Japanese. -If he takes a train, who will meet him? -His friend. In China Paul has a good friend who lives in Beijing.They studied at the same university in Canada more than 1

34、5 years ago.His Chinese friend wants to help Paul with his business.His friend has lots of business experiences.His friend can help Paul learn about doing business in China.Paul knows there is a lot to learn. He will certainly need his friends help. -Where did Paul meet his Chinese friend?At a unive

35、rsity in Canada. -What does Paul want to learn? -About doing business in China. While in Beijing, they plan to visit several Italian restaurants.They may meet with some of the owners too, but it isnt certain yet.Most of the owners are Chinese. One or two of them may want to do business with Paul.If

36、he has time he may go to the Great Wall of China.Its a few hours outside Beijing by car. -Who may want to do business with Paul? One or two restaurant owners.Altogether, the trip may take three or more weeks.Paul still isnt sure how long he will stay in each country.He may spend a week in Japan and

37、two weeks in China.He may decide to stay longer. Everything depends on his friends. He expects to get more information from them in the next day or two.-When does he expect to hear from his friends? In a couple of days. -What do his plans depend on? -His friends. VocabularyIn basketball, players sco

38、re points by shooting a basketball through a hoop. Each side has 5 players and the game is played on a basketball court.Football is probably the worlds most popular sport.Each team tries to score a goal by kicking the ball into a net.Baseball is a team sport where each side has 9 players.Baseball pl

39、ayers use a bat to try to hit the ball and get on base.Golf is an individual sport where players try to hit the ball into a hole in the ground. The game is played on a golf course with 18 holes.In boxing the two boxers stand in a boxing ring and hit each other.Sometimes a boxer, like this one, knock

40、s the other one out.When people fall down, they can break a bone.A broken bone can be very painful. If someone is cut, they will bleed. A knife or sharp object can cut someone and cause bleeding.Poisons are very dangerous and cause death.Some snakes and spiders are poisonous, so be careful.A heart a

41、ttack can happen very suddenly. If someone has a heart attack, call for an ambulance right away.If you catch on fire, fall to the ground and roll. Getting too close to a fire can be very dangerous. DialogueM: Whats the matter? You look really tired today. W: I am tired. I didnt sleep well last night

42、. M:Bad dream. W: Yes, exactly. I had a terrible dream, a really nightmare. M: So it woke you up. W: Yes, it woke me up. I was really scared. M: Ive had those kinds of dreams too. W: It was so scary that I was afraid to go back to sleep. -Why didnt she sleep well last night? She had a terrible dream

43、. M: Was something chasing you? W: No, nothing was chasing me, but I was falling. I was falling faster and faster, and it was dark. I couldnt see or hear anything.M: Can you remember anything else? W: Yes, I remember now. In my dream I was screaming, but there was no sound. I thought I was going to

44、die at any second. M: Wow. That is scary. -What was she doing in her dream? -falling and screaming. M: So what did you do when you woke up? W: I didnt want to go back to sleep, so I checked the news online. Then I played the game. M: You didnt go back to sleep? W: Actually I got too tired playing th

45、e game than I fell asleep. M: Well, at least you got some sleep. Some sleep is better than no sleep. W:I guess so. But Im still tired. I hope I can get through the day.-What did she do when she woke up? -She went online. -What was she doing when she fell asleep? She was playing a game online. M: Hav

46、e a good lunch and then work out in the afternoon. W: Thanks, Im already feeling a bit better. M: Hey, look, the boss is coming. Look like youre working hard.-How is she feeling now? -Shes feeling a bit better. She had a terrible dream, and it woke her up. M: Hey, whats that awful smell? W: The toil

47、et is broken in the mens bathroom. M: Wow. I cant work when it smells this bad. I need some fresh air.-Whats causing the awful smell? -a broken toilet. -Why cant he work? He cant work because of the bad smell. W: OK, lets take a break and go out for a walk. Get your computer and we can work at a coffee shop. M:Good idea. When do you think it will be cleaned up?W: A plumber is coming and he should be here soon. By the time we get back, the smell should be gone. -Who is co