(完整版)大学英语精读第三版第二册U5教案

Unit 5 The Villain in the Atmosphere

Teaching Time: 8 hours

Students’ level: non-English majors of the second semester of the 1st year.

Teaching Objectives:

1. Get Ss to know the conditions of the pollution on earth; let the students realize the serious pollution of the earth; analyze the causes of the pollution on the earth; think over and discuss the ways to solve the issue.

2. About the text, Ss should grasp the text content, text structure, basic vocabularies and required grammar points of the section.

Words: atmosphere, compose, conclusion, conference, crash, deadly, emit, extremely, feasibility, fund hazard, indicate, originally,

pollute, proceed, signal, smash, survive, type, unfit Phrases & Expressions: be known as, name after, as to, base on, for one thing...for another, be composed of, as far as sth/sb. be

concerned, stick up, give up, set back

Grammar: because of, what do you think of, so/as far as...he concerned

3.About the reading, Ss should acquire the reading skill —using word part clues for word meanings.

4.About the writing, Ss should get to know the writing skill—

coherence.

5.About the listening, Ss will finish the Unit 5 directed by the teacher. Teaching Procedures:

I.Pre-reading Activities

Background information:

1. Glaciers

Glacier,an enduring accumulation of ice, snow, water, rock, and sediment （沉淀物）that moves under the influence of gravity. Glaciers form where the temperature is low enough to allow falling snow to accumulate and slowly transform into ice. This accumulation is most common in the polar regions, but can also occur at high altitudes on mountains even near the equator. Glaciers are complex systems that grow and shrink in response to climate. At the present, glacier ice covers about 15 million sq km (5.8 million sq mi), or 10 percent, of Earth’s land area.

2.Polar ice cap

A polar ice cap is a high-latitude region, centered in the polar region, which is covered in ice.

3.Greenland

An Arctic island nation located in North America by geography, Greenland is a self-governed Danish territory. It is the world’s largest island, and about 81 percent of its surface is covered by ice.

4. Global Warming

Global warming refers to an average increase in the Earth's temperature, which in turn causes changes in climate. A warmer Earth may lead to changes in rainfall patterns, a rise in sea level, and a wide range of impacts on plants, wildlife, and humans. When scientists talk about the issue of climate change, their concern is about global warming caused by human activities.

5. Manhattan

Manhattan is one of the five boroughs that comprise the City of New York. It is by far the most densely populated county in the United States and famous for its soaring skyscrapers.

Manhattan (Island) is one of the commercial, financial, and cultural centers of the world. It has many famous landmarks and tourist attractions. They include Broadway, Chinatown, the Empire State Building, Greenwich Village, Times Square, The United Nations Headquarters, Wall Street, and many churches, colleges, skyscrapers, and theaters. Most of New York’s municipal buildings stand on Manhattan Island. When people think of New York City, they are usually thinking of Manhattan, the core of the city.

6.The British Isles

The British Isles are s group of islands off the northwest coast of Europe

consisting of Great Britain (that is England, Scotland and Wales), Ireland and the many smaller adjacent islands. These islands form an archipelago of more than 6,000 islands.

7.Isaac Asimov

Isaac Asimov was born on 2 January 1920 in the former Soviet Union, but grew up in Brooklyn, New York. He taught biochemistry at Boston University until he retired in 1958 to become a full-time writer. Asimov had been publishing short stories since the late 1930s, and in 1952 published his first novel. The author of the classic Ⅰ, Robot series and The Foundation Trilogy, Asimov wrote more than 400 books and won every major science fiction award. He also wrote popular books and essays on science and technology, earning him the nickname "The Great Explainer." Isaac Asimov died of “heart and kidney failure, which were complications of the HIV infection” on 6 April 1992. HIV was not revealed as the cause of his death until 2002, when his widow Janet published the memoirs It's Been a Good Life.

Warm-up Questions

1.What’s the weather like in your hometown? Do you like it? Why or why not?

2.Have you ever noticed any changes in your hometown or in the city you’re now living in? What are they?

3.Do you have any idea of the greenhouse effect? How does it affect the

temperature on Earth?

Introductory Questions for Reading Comprehension

1.Who is the “villain” in the atmosphere?

2.What does carbon dioxide do to plants and animal life on the Earth?

3.What is happening to the sea level? What will the rising sea level do to our life?

4.What does carbon dioxide do to the temperature of the Earth?

5.How come that the concentration of the gas in the atmosphere is going up steadily?

6.So in the final analysis, who are the villains and who are the victims?

7.What should be done?

II.Key Words & Expressions

1.poisonous:

containing poison in itself; very harmful and cause illness or death

a)Dangerously high levels of poisonous chemicals were found in the water.

b)The Ministry of Health warned the general public to be on high alert against poisonous mushrooms, as 16 people have died after eating different kinds of poisonous mushrooms this summer.

2.essential:

absolutely necessary; extremely important

a)The body cannot store Vitamin C so it is essential to have a fresh

supply every day.

b)The leadership of the Party is essential to socialist revolution and socialist construction.

3.convert:

1)change one’s opinion, religion, political belief, etc.

a)Bill was converted to Christianity soon after he retired from the army.

b)Kevin is such a stubborn man that not surprisingly his wife failed to convert him.

2)change to or into another form, substance, or state, or from one use or purpose to another

a)Water is converted into steam if it is boiled.

b)My uncle lived in a comfortable home converted from farm buildings some 15 miles to the northwest of the city.

4.tissue:

1)mass of cells forming the body of an animal or of a plant

The elderly lady strongly disapproves of the use of fetal tissue for the treatment of people with certain illnesses.

2)thin light paper used esp. for wrapping things, or soft paper which is used for cleaning and is thrown away after use

--The taxi driver always keeps a box of tissues in the taxi.

5.serve as :

be used for a particular purpose

a) Her apartment also serves as her office.

b) That will not serve you as an excuse.

c) In the absence of anything better, the couch would serve as a bed for a couple of nights.

6. liberate:

set free

a) Try to liberate yourself from preconceived ideas.

b) They liberated all the prisoners.

7. apparently: according to appearance; as it seems

a) Not all of what Mr. Blair wrote was false, but much of what was true in his article was apparently lifted from other news reports.

b) The young man was whistling by the window, apparently quite cheerful.

8. in all likelihood:

very probably

a) In all likelihood the flight will be canceled.

b) Interest rates will go up further in all likelihood.

likelihood: probability

There is much/every/no/little likelihood that he’ll be elected for the second term.

8.steadily:

evenly; regularly; gradually

It’s believed that today’s children will be living in a steadily improving environment.

9.beneath:

below; underneath

a)The industrialized world is completely dependent on oil, much of which resides beneath the surface of Middle Eastern countries.

b)After weeks at sea, it was wonderful to feel firm ground beneath our feet once more.

11. starvation:

suffering or death from lack of food

Drought conditions during the 1980s led to widespread starvation in Africa.

starve: v. be hungry; go without food

The explorers starved to death in the desert.

Let's get something to eat; I'm starving.

12.widespread:

found, placed, etc., in many places

a) A widespread flu epidemic affected eighteen Western states.

b) The president was elected to a new term with widespread popular support.

13. structure:

1) the way in which parts are formed into a whole

The family is seen as the primary social structure for meeting the emotional needs of children.

2) anything formed of many parts, esp. a building; any complex whole Many buildings of the period were steel and cement structure.

14. collapse:

1) fall down or inwards suddenly

a) The building collapsed, trapping thousands of people.

b) Quite a few houses collapsed in the heavy storm last week.

2) fall helpless or unconscious

a) A hiker who collapsed along the snow-covered mountains was rescued after he’d called for help from his cell phone.

b) He collapsed while working and died on the way to hospital.

3) fail suddenly and completely; break down

a) The company collapsed without any sign beforehand.

b) He thought his whole world had collapsed when his wife died.

15. pressure:

1) the action of pressing with force or weight

a) It takes a bit of pressure to make the lid close.

b) The pressure of the water caused the wall of the dam to crack.

2) trouble that causes anxiety and difficulty

a) The pressure of modern life is causing violence, murder, suicide and an obsession with fortune-telling.

His health collapsed under the pressure of work.

https://www.sodocs.net/doc/b39156066.html,e about:

take place; happen

a) How did the accident come about?

b) Sometimes it is hard to tell how a quarrel comes about.

17. connection:

relationship between things or events

a) How long will the connection of the new telephone take?

b) The doctor believed that his illness must have had some connection with his diet.

18. transparent:

allowing light to pass through so that objects behind can be clearly seen; thin or fine enough to be seen through

a) The silk dress of the model was almost transparent.

b) The greenhouse was transparent all the way round, so the children can see the plants growing.

19. radiation:

the act of radiating heat, light, etc.; sth. which is radiated

a) The building is designed to trap and store radiation from the sun.

b) Nuclear radiation can attack the cells in living tissue.

20. visible:

that can be seen; noticeable to the eye

a) Many stars are hardly visible to the naked eye.

b) Children should wear bright orange when they are riding in the streets so that they are more visible.

21. tend:

v. be likely to

Prices are tending upwards.

Old people tend to get fat.

He tends towards selfishness.

People tend to get fat as they grow older.

22.distinctly:

in a distinct manner; clearly

a) I distinctly remember you promising to keep the secret.

b) He was looking distinctly nervous before the exam this morning. distinct: adj.

The twins had distinct tastes.

You should make your writing distinct.

23. creep:

1) move slowly and quietly along the ground or a surface

a) The traffic was creeping along at a snail’s pace.

b) I heard a man creeping stealthily up to my door.

2) move or advance slowly and quietly

a) Surveys noted that the company is creeping onto cell phones and

other wireless devices.

b) Old age creeps up on you before you realize it.

24. estimate:

calculate roughly the cost, size, value, etc. of sth.

a) I had estimated that the work would take three days; however, it took

a week.

b) That’s just an estimate–nobody really knows what the figure is because nobody bothers to calculate it.

25. polar:

of or near the North or South Pole

The latest science tells us that, at the current rate of global warming, polar bears might not make it to the next century.

26. melt:

1) (cause to) become liquid

a) For a very long time the United States was regarded as a “melting pot”.

b) The spring sun melts the snow and the lakes become ice-free by mid-March.

2) gradually become smaller and then disappear

a) Their differences melted away.

b) Her anger melted away when she read the letter.

27. factor:

any of the things that cause or influence sth.

a) There are many factors that influence who will ultimately become the candidate for a party.

b) Ability, industry, and health are factors of success in school.

28. to make matters worse:

with the result that a bad situation is made worse

a) Trying to soothe her only make matters worse.

b) I realized that anything I could say only make matters worse.

29. disappear:

1) go out of sight

a) I saw the plane disappear behind a cloud.

b) The spot disappeared when the shirt was washed.

2) cease to exist; become lost

a) Let’s hope that our difficulties will soon disappear.

b) That species disappeared in the Ice Age.

30. replace:

take the place of

a) Robots are replacing humans for dangerous tasks.

b) Can anything replace parental love?

31. consume:

use; use up

a) Those big powerful cars consume a great deal of fuel.

b) He soon consumed his fortune.

32. perspective:

a particular way of thinking about or viewing sth.

a) The author sees the event in historical perspective.

b) The perspective of the executives on the situation is rather different from that of the workers.

33. nuclear:

of, concerning, or using the nucleus of an atom, atomic energy, or the atom bomb

They claimed that there was evidence that the country supported terrorism and possessed biological, chemical, and nuclear weapons. 34. alternative:

(n.) one of two or more possibilities

a) We have no alternative in the matter.

b) One of the alternatives open to the minister is to resign.

(a.) that can be used instead of sth. Else; other; different

They are alternative ways of expressing the same idea.

35.interior

(a. & n.) situated within or inside; inner

a) The interior walls of the building were painted green.

b) The interior of the cave was dark.

36. solar:

of, from, or concerning the sun

A solar cell takes radiation from the sun and converts it into electricity.

https://www.sodocs.net/doc/b39156066.html,pete:

try to win sth. in competition with someone else

a) The two nations continued to compete with each other for influence in the resource-rich Third World.

b) These young men competed for the silver medal.

38. military:

relating to the armed forces

a) The government accused the newspaper of preparing to reveal military secrets.

b) The administration became increasingly concerned with military action.

39. apparently:

adv. from appearances alone

He was apparently surprised at the news.

Apparently she did not succeed.

40.fraction:

n. a small part or item forming a piece of a whole

He has done only a fraction of his homework.

The story does not contain a fraction of truth.

41.splash:

vi. cause (a liquid) to spatter about, especially with force; walk through mud or mire

She accidentally splashed ink on my sleeve.

42.do sb. harm对某人造成损害

If you do harm to me I shall not look over you.

It wouldn't do him any harm to work a bit harder.

43.from year to year年复一年地，每年

Prices fluctuate from year to year.

Things get worse from year to year.

44. go up上升，增长

Inflation may be rising, if (it is) so, prices will go up.

The financial times share index go up five point yesterday.

45. make up弥补, 和解, 编造, 整理, 化妆, 拼凑成

I tried to make up for my loss.

She tired to make up to the boss.

46. first of all首先

First of all, let me tell you the news.

First of all she just smiled, then she started to laugh.

47. at first起先，开始时

The answer was at first unapparent.

At first we used hand tools.

48. by itself自动地，独自地

The house stood by itself on a hill.

The machine will start by itself in a few seconds.

49. cut down砍倒；减少

He has to cut down on the consumption of meat.

Do not cut down the tree that gives you shade.

[谚]遮荫之树不可砍。

50.object to反对，不喜欢

I object to our privacy being invaded.

Many people object to experimentation on animals.

https://www.sodocs.net/doc/b39156066.html,nguage Points

1. It is not very poisonous and it is present in the atmosphere in so small

a quantity —only 0.034 percent —that it does us no harm.

1) Translate the sentence into Chinese.

它毒性不大，在大气层中的含量极小——只占0.034％——不会对我们造成任何伤害。

2. But here is what this apparently harmless and certainly essential gas is doing to us:

1) Analyze the structure of the sentence

It is an inversion. “here” is used at the beginning of the sentence. The subject of the sentence is a complex sentence, consisting of a subject clause “what this apparently harmless and certainly essential gas.”

2)Translate the sentence into Chinese

然而，这一看上去无害而且无疑又必不可少的气体却正在对我们产生影响。

3. Where there are low-lying coastal areas (where a large fraction of the world’s population lives) the water will advance steadily, forcing people to retreat inland.

1) Paraphrase the sentence.

The water will move forward to the coastal areas that are not much above the land (in which a great number of people in the world live), as a result, many people have to move away and settle down inside their countries.

2) Translate the sentence into Chinese.

在那些低洼的沿海地区(在这些地区居住着世界上很大一部分人口)，海水会稳步向前推进，迫使人们向内陆退居。

4.Florida will disappear beneath the waves, as will much of the British Isles, the crowded Nile valley, and the low-lying areas of China, India, and Russia.

1)Analyze the structure of the sentence.

“as”作为连接词引导了方式状语从句，为了保持句子平衡，使用倒装句。

More Examples:

He traveled a great deal as did most of his friends.

He was exhausted, as were all the others in the team.

佛罗里达将会沉没在海浪之下，英伦三岛的大部分，人口稠密的尼罗河流域，还有中国、印度和俄罗斯的低洼地区也都将遭到同样的命运。

5. And all because of carbon dioxide.

1) Paraphrase the sentence.

The above mentioned results are all caused by carbon dioxide.

6. Sunlight, striking the top of the atmosphere, travels right through miles of it to warm the Earth’s surface.

1) What’s the function of “striking the top of the atmosphere” ?

A present participle phrase is used as attributive to modify “sunlight”. More Examples：

This book, (which deals) dealing with English composition, was written by a professor.

This book, written (which is written) in simple English, is suitable for beginners.

2) Translate the sentence into Chinese.

太阳光照射大气层的顶部，径直透过数英里的大气层，温暖着地球的表面。

7. However, the atmosphere is not quite as transparent to infrared radiation as it is to visible light.

1) Paraphrase the sentence

The atmosphere is clearer to visible light than that to infrared radiation.

然而，大气层对红外线来说并不像它对可见光那样透明。

8. Less heat is lost at night, for that reason, than would be lost if carbon dioxide were not present in the atmosphere.

1) Why plural form “were” is used here?

Subjunctive mood.

Example:

If it weren’t too much trouble, I’d love a cup of tea.

9. we can be thankful that carbon dioxide is keeping us comfortably warm, but the concentration of carbon dioxide in the atmosphere is going up steadily and that is where the villainy comes in.

1)Translate the sentence into Chinese.

我们该感到欣慰，二氧化碳给我们温暖使我们舒舒服服，但是大气中二氧化碳的浓度正在稳步升高，其恶迹也就由此而生。

10. Each year since, the concentration has crept upward and it now stands at 0.0340 percent.

1) Paraphrase the sentence.

Since 1958, every year the gathering of carbon dioxide has increased and now it was about 0.0340 percent.

2) What’s the function of “creep upward”?

It vividly showing us the increasing process of carbon dioxide, which moving slowly and quietly.

大学英语精读3单词

Glossary lesson 1 academic 学院的adolescence 青春期adolescent 青少年时期adulthood 成年 affection 喜爱 affirm 断言 agenda 日程表 anxiety 焦虑 attitudinal 态度的 baptist bounce 跳跃 capability 能力contribute 贡献 counsel 建议 crisis 危机 definite 清楚的developmental 发育的distinct 区分，差别distressed 悲伤 dorm 公寓，宿舍(大学生)

encyclopedia 百科全书endeavor 尝试endowment 天赋 ethical 道德的ethnic evaluate 估算，评估excessive 过分的，极度的feminine 女性的 financial 财政的 functional 职务的 genetic 基因的 guilt 内疚 heighten 提高 inherit 遗传，继承inhibition 压抑的情绪interact 交流 interaction 合作 involve （成功的）必要条件journal 期刊 masculine 男性的 maturity 成熟 mistrust 不信任

newscast 新闻广播parental 父母的 peer 同龄人 perceive 理解 position 工作 prejudiced 偏见 project 规划 rebel 抗议 relate 理解，同情某人resentment 怨恨 role 职责 seminary 学院的separation 分开 sexual 2性的 shrink 缩水 stressful 有压力的superior 优秀的theological 神学的unquestionably 毫无疑问的lesson2

大学英语精读第三版第二册课后答案

大学英语精读第二册（第三版）book2Unit1答案上海外语教育出版社 一） 1. bare 2. empty 3. empty 4. bare 5. empty 6.empty 二） 1. shortly 2.track down 3.faint 4.motioned 5.at the sight of 6.feel like 7.slamming 8.rang out 9.contract 10.made for 11.heated 12.emerged 三） 1. host 2. sprang up/rang out 3. impulse 4. came to 5. track down 6. unexpected 7. outgrow 8. widened 9. shortly 10. emerge / spring up 11. at the sight of 12. made for 13. crisis 14. colonial 四） 1. Jimmy has outgrown the shirts his aunt made for him a few years ago. 2. Does the doctor think the elderly lady is likely to survive the operation / it is likely that the elderly lady will survive the operation? 3. The other day your cousin paid us an unexpected visit. 4. Don't you see the nurse motioning us to be silent? 5. Her face lit up with joy at his return.

大学英语精读3课后答案.doc

大学英语精读 3 课后答案【篇一：大学英语精读第三版第三册课后答案(含 close 原文)】 >1) accent 2) turn against 3) a couple of 4) takes his time 5) fate 6) confirmed 7) witness 8) subsequent 9) stands a chance 10) trial 1) belief 2) brilliant 3) employment 4) has saved up 5) stood a chance 6) were awarded 7) presumably 8) conducted 9) casual 10) around (which student life) revolves 1) joe wrote to say that he had to put off his visit because of his illness. 2) despite the noise, they went on working as if nothing were happening. 3) traffic was held up for several hours by the accident. 4) called (up) on to speak at the meeting, i couldnt very well refuse. 5) mrs. stevenson looked in the cupboard and found there was not a single lump of sugar left. 6) it was the rumor that turned joe against his twin brother. 7) we wondered how sara was getting on in her new job. 8) although anne agreed with me on most points, there was one on which she was unwilling to give in. 9) visitors could photograph almost anything here without having to ask for permission.

大学英语精读2 课后翻译题答案

第一单元 1.她砰地关上门，一声不吭地走了，他们之间 那场争执就此结束。 Their argument ended when she slammed the door and left without a word. 2. 出席晚宴的客人对那个美国人威严的语气 感到有点意外。 The guests at the dinner party were slightly surprised at the commanding tone of the American. 3. 约翰尼已长大成熟，不再害怕独自呆在家里了。 Johnny has outgrown the fear of staying at home alone. 4. 当全部乘客都向出口处(exit) 走去时，他却独自留在座位上，好像不愿意离开这架飞机似的。 While all the other passengers made for the exit, he alone remained in his seat as if unwilling to leave the plane. 5. 这封信必须交给威尔逊博士本人。 The letter is to be handed to Dr. Wilson himself. 6. 南希虽然很想参加辩论，但腼腆得不敢开口。 While she felt like joining in the argument, Nancy was too shy to open her mouth. 7. 你觉得什么时候最有可能在家里找到他？ What do you think is the likeliest time to find him at home? 8. 猎人一看见有只狐狸从树丛中出现并向他设下(lay) 的陷阱(trap) 方向跑去，脸上顿时闪出了兴奋的表情。 The hunter’s face lit up with excitement as soon as he saw a fox emerge from among the bushes and run in the direction of / make for the trap he had laid 第二单元 1) 会上有人建议任命一个十一人委员会来制定新章程。 It was suggested at the meeting that a committee of eleven be appointed to make a new constitution. 2) 这些青年科学家通过现场观察，获得了研究工作所需的第一手资料。 By making on-the-spot observations, the young scientists obtained first-hand information they needed in their research work. 3) 他很可能会因视力不好而被拒收入伍。 It is very likely that he will be rejected by the army because of his bad eyesight. 4) 委员会成员在新机场最佳选址(location) 这一问题上持有不同意见。 The committee members have conflicting opinions as to the best location of the new airport. 5) 亨利创作的艺术品在许多方面比他兄弟的要好。 Henry's works of art are superior in many respects to those of his brother's. 6) 我们产品质量的稳步提高在很大程度上是由于设备有所改进。 The steady rise in the quality of our products owes much to the improvement of our equipment. 7) 吉姆本想按照自己的判断行事，但他没有这样做，因为作为军人他得服从命令。Jim would have preferred to act on his own judgment, but he didn't because as a soldier he had to obey the order.

大学英语精读3单词

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