新概念英语单词第三册第55课：来自地球的问候
新概念英语第三册第55课-From the earth Greetings
新概念英语第三册第55课:From the earth GreetingsLesson 55 From the earth: Greetings来自地球的问候 Listen to the tape then answer the question below.听录音，然后回答以下问题。
Which life forms are most likely to develop on a distant planet? Recent developments in astronomy have made it possible to detect planets in our won Milky Way and in other galaxies. This is a major achievement because, in relative terms, planets are very small and old not emit light. Finding planets is proving hard enough, but finding life on them will prove infinitely more difficult. The first question to answer is whether a planet can actually support life. In our won solar system, for example, Venus is far too hot and Mars is far too cold to support life. Only the Earth provides ideal conditions, and even here it has taken more than four billion years for plant and animal life to evolve.Whether a planet can support life depends on the size and brightness of its star, that is its 'sun'. Imagine a star up t twenty times larger, brighter, brighter and hotter than our own sun. A planet would have to be a very long way from it to be capable of supporting life. Alternatively, if the star were small, the life-supporting planet would have to have a close orbit round it and also provide the perfect conditions for life forms to develop. But how would we find such a planet? At present, there is no telescope in existence that is capable of detecting the presence of life. The development of such a telescope will be one of the great astronomical projects of the twenty-first century.It is impossible to look for life on another planet using earth-based telescopes. Our own warm atmosphere and the heat generated by the telescope would make it impossible to detect objects as small as planets.Even a telescope in orbit round the earth, like the very successful Hubble telescope, would not be suitable because of the dust particles iron solar system. A telescope would have to be as far away as the planet Jupiter to look for life in outer space, because the dust becomes thinner the further we travel towards the outer edges of our own solar system. Once we detected a planet, we would have to find a way of blotting out the light from its star, so that we would be able to 'see' the planet properly and analyze its atmosphere. In the first instance, we would be looking for plant life, rather than 'little green men'. The life forms most likely to develop on a planet would be bacteria. It is bacteria that have generated the oxygen we breathe on earth. For most of the earth's history they have been the only form of life on our planet. As Earth-dwellers, we always cherish the hope that we will be visited by little green men and that we will be able to communicate with them. But this hope is always in the realms of science fiction. If we were able to discover lowly forms of life like bacteria on another planet, it would completely change our view of ourselves. As Daniel Goldin of NASA observed, 'Finding life elsewhere would change everything. No human endeavor or thought would be unchanged by it."参考译文天文学方面最新发展使得我们能够在银河系和其他星系发现行星。
新概念英语第三册 51-55 课后作文标准答案
Lesson 51 Predicting the futureKey to CompositionA possible answerflan and ideas for composition (a)Titles Computers in 20 years' time - Introduction: Predicting what computers will be like — guessing gameDevelopment: Development so fast — computers already smaller, more powerful, cheaper than ever — in 20 years, what? Let's speculate1 Everyday shopping by computer — virtual-reality shopping2 Education—computer-notebooks3 Travel- computer -driven aircraft, cars, lorries, etc.4 Medicine and health—brain surgery — computer-operated limbs Conclusion: Who knows? — wait and seeCompositionPredicting what computers will be like in 20 years' time or what they will be able to do is a guessing game. If Leon Bagrit could not predict everything, what chance have I got? However, because prediction is just a calculated guess, I will try!The development of the computer since the 1960s has been very fast. Prom large mainframe computers which filled whole rooms to small lap-top computers which you can carry in a shoulder bag or large handbag, it has taken only forty years. Computers are already smaller, more powerful and cheaper than they have ever been. So what might happen in the next twenty years? Let's speculate.In twenty years' time it's possible that many people will be doing their everyday shopping by computer. The "virtual-reality" shop will be available through your TV set. You will be able to "walk through" your supermarket on screen, click or tick what you want, and then order it — and it will be delivered. In education, most students could be using computer-notebooks which make notes for them as they listen to a lecture or watch a demonstration experiment. In the world of travel, aircraft already have computer systems that will con-trol auto-pilot In twenty years' time, computers could actually pilot aircraft — with no need for a real, live human pilot at all. Computers already help doctors diagnose disease and other health problems, and help in the control of body systems during opera-tions. What else might they do in the future? They might actually control certain kinds of surgery (brain surgery, for example) where the human hand cannot always keep still enough, and power computer-operated limbs.So there are some ideas. But who knows what might really happen? No one. No one can see into the future. We shall just have to wait and see. (307 words)Lesson 52 Mud is mudKey to CompositionA possible answerPlan and ideas for composition (a)Title: A day's shoppingIntroduction: Looking forward to day out — wanted to get new clothes — last Friday Development: Got up usual time —caught bus to centre of town —a list of purchases —something to wear to friend's wedding — pair of shoes to go with new clothes — within an hourhad most important things on list Then most difficult part of day — "Birthday present for Pat" —a book Spent 2 hours in one large book shop — failed — bought three for self!Conclusion: How I felt when I got home CompositionFor me, a day's shopping is the best way I think of to pass a day away from college or work. I have been looking forward to a day out shopping for weeks because I have wanted to get some new clothes for ages, so last Friday I took a day off.I got up at the usual time (as if I were going to work or college) because for me shopping is as serious as work. Before I left the house I made sure I put on a good pair of walking shoes and then caught the bus into the centre of the town.Some people visit all the shops in the hope that they will find what they want at the prices they want to pay. Not me: I'm one of those shoppers who has a list of purchases — and with a fairly good idea of how much I want to pay.The first thing 1 wanted was something to wear to a friend's wedding next month — and I didn't want to pay very much- I found just what f wanted in the second shop I visited. And in the second shoe shop I visited, I found a pair of shoes that would go with the new clothes and which I could wear to work afterwards. Within an hour I had bought the most important things on my shopping list. I was so pleased!But then came the most difficult part of the day. The third thing on my shopping list was "Birthday present for Pat". I like to give her a present but it is always so difficult. This year, I decided, I would buy her a book. Do you know how long I spent in one large book shop? Two hours! And even then I didn't get her a book — although I bought three for myself IBy the time I got home, it was six o'clock. I was absolutely exhausted, but pleased that I had managed to buy two things on my list.(337 word)Lesson 53 In the public interestKey to CompetitionA possible answerPlan and ideas for composition (6)Title: The work of a policemanIntroduction: In Britain —people —different attitudes to police —generally appreciate them (not criminals!)What do police do?Development: Number of jobs in one:Traffics ;keeping the peace; solving crime; helping to keep order in emergencies — air crashes, fires, road accidents, etc. Conclusion: Police do excellent job — don't envy them Composition In Britain, people have different attitudes to the police. Most people generally appreciate them and the job they do — although there. are certain people (including criminals, of course) who do not believe that the police should have the power that they do.What does a policeman actually do? It is not an easy job to describe. After all, a policeman has a number of jobs in one. A policeman often has to control traffic, either on foot in the centre of a town, or in a police car on the roads. Indeed, in Britain, he might be in the Traffic Police and spend all, or a lot of, his time driving up and down main roads and motorways. A traffic policeman has to help keep the traffic moving, stop speeding motorists and help when there is anaccident. 'A policeman has to help keep the peace, too. If there is a fight or some other disturbance, we expect the police to come and assess the situation and restore order. And they often have to deal with situations at great risk to themselves and their own safety.We expect the police to solve crimes, of course, so an ordinary policeman, even if he is not a detective, will often have to help look for and arrest criminals.And who do we call when there is an emergency —an air crash, a fire, a road accident, or a burglary? We call the police. So a po-liceman has to be prepared to face any unpleasant emergency that may happen in the modern world.The police do an absolutely necessary job, they do it extremely well and I support them, but I do not envy policemen. 1 do not think that 1 could ever do the job of a policeman. (296words)Lesson 54 Instinct or cleverness?Key to CompositionA possible answerPlan and ideas for composition (b)Title: Our efforts to control pestsIntroduction: What are "pests"? — see dictionary definition — always been difficult to control or exterminate themDevelopment: Insects: ants, wasps, locusts, (plague), beetles that damage woodwork. . . damage property, devour our crops, . . . —other pests —mice, rats —eat food —spread disease —efforts to control pests — insecticides and pesticides — poison —traps . . . . , . . . . , .For farmers, even certain birds are pests — gulls, pigeons, etc. — follow at sowing time and eat seeds —' scarecrows to frighten birdsConclusion: Tried almost everything — some pests held in check other still a major problem (e. g. locusts) . .CompositionAccording to my dictionary, "pests" are "small animals or. insects that harm or destroy food supplies". But, for me, they are more than that: they are insects and small animals that spread disease and damage property, too. Whatever they do and however you define them, pests have been a major problem to man throughout history. Man has tried to control or exterminate these creatures, but neverwith very much success.In some ways, insects are the worst pests. Ants, locusts and beetles damage property, woodwork, crops and harvest, and. in this century we have sprayed crops with insecticides and pesticides to protect them from insects. The problem now is that there are some in-sects that have become immune to pesticides. Rats and mice eat our food supplies too and spread disease, and people have tried to kill or catch them with poison or traps. But again, they are still with us- We. haven't managed to exterminate them.Let's not forget, however, that for farmers, certain birds are "pests" too. In Britain, seagulls, pigeons and other birds often fly down in their hundreds (or even thousands) to pick up seeds when farmers are planting crops. Years ago, fanners used to stand scare- crows in the fields to frighten away birds, but I'm not sure how effective they were.We have tried different things, then, to control pests, and we have managed to hold some pests in check. However, some are a big problem, both in the major industrial nations and in the Third World. While locusts are a terrible problem in countries like Sudan and Ethiopia, rats are still a problem in most large cities in the world. We might control pests to a certain extent, but we shall never get . rid of them. (292words)Lesson 55 From the earth: GreetingsKey to Composition.A possible answerPlan and ideas fair composition (a)Title: ExtraterrestrialsIntroduction: Remember "ET"? Ideas about extraterrestrialsDevelopment: But creatures with incredible intelligence and no form? How deal with them? Not benevolent? Stories of extraterrestrials aliens landing —have scientists studied them? Extraterrestrials helping scientists? Stories just rumours?Conclusion: Extraterrestrials out there in space? Perhaps one day we'll know: change our view of everything CompositionDo you remember ET in the Film ET, the Extraterrestrial'! If you do, you will know that the common picture of extraterrestrials is that they will look rather strange —for instance, they might have big eyes and funny feet and be a strange colour — but they will still somehow look like living creatures from earth. At the same time, of course, we believe that they will probably have incredible powers —like ET's power to heal injuries and to come alive again. Many science-fiction stories and films have shown aliens or extraterrestrials like this. They may somehow look like strange earth creatures, therefore, but they are benevolent.But what if extraterrestrials —beings from other planets —are creatures with incredible intelligence and with no form, that is, with no body form like earthly creatures? They might be almost "living thoughts''. How would we greet them? How would we deal with them? And what if they are not benevolent? In other words, what if they really want to take over the earth?There are stories that extraterrestrials or aliens have already crashed on earth m spacecraft (flying saucers) and that scientists have studied them. There are even more fantastic stories that scientists are already learning from extraterrestrials new knowledge which will help us build incredible spacecraft to fly to other planets and beyond. Stories like that must surely be just rumours.Perhaps one day we will know if there really are extraterrestrials out there in space, and if there are, we will know what they look like and what they think of us. Will they really be little green men? Or will they be giants? Or perhaps they will be so small that we can hardly see them? Will they be friendly? Or will they want to take over the earth? Who knows? One thing is certain. If we were ever to discover that there are extraterrestrials out there, the discovery would completely change our view of the universe and ourselves.(329 words)。
新概念英语第三册精品课件PPT NCE3_lesson55(共64页)
have, make, let等使役动词和see, hear, listen to, look at, watch, notice, observe 等感官动词 都可接不带to的不定式作宾补。help后可带to, 也可不带to。如：
Let him do whatever he wishes to do. 他想干什么就让他干吧。
八大行星
冥王星
八大行星
课文讲解
Para 1.
1. astronomy n.天文学 例句：Physics and astronomy are
related sciences. 物理学和天文学是相关联的科学。 astronomical形容词 adj. 天文学的,天体
的
detect发现; 发觉, 查明, 侦察出
Did you see him go out? 你看见他出去了吗？
I often help my mother (to) do some housework. 我经常帮助妈妈做些家务。
四、“make＋宾语＋Ｖ-ed（过去分词作 宾补）”这个结构指宾语接受后面的那 个动作，表示被动的意思，意为 “使某 人 / 某事被……”。如：
它比我所想的要坏得多。 He argued that all matter was infinitely
divisible. 他坚持所有物质都可无限地分。 宇宙是无限大的。 The universe is infinitely large.
2.The first question to answer is whether a planet can actually support life.
得我们感到更自信了。 友情提示：在被动语态中，此类结构中省略的动词
昂立新概念3讲义(第四版) Lesson 55 学生版
昂立新概念3讲义第四版（学生版）最新讲义Lesson 55 From the earth: Greetings Part 1 Words and Expressions(1) astronomy n.天文学astro-词根表示_____________astrology _____astronaut ________astrophysics ________astronomer ________astronomical ________(2) relative adj. 相对的翻译：They now live in relative comfort._____________________________________近义词：___________名词：______ ：__________(3) infinitely adv. 无限地（尤用于比较）There is an infinitely bright future ahead of you young people.___________________________________________我们的新教室比原来的旧教室要好多了。
___________________________________________形容词：_________(4) solar adj. 太阳的，太阳系的solar system _______solar cell _________solar power _______solar wind _________月亮的：_________阴历：_____________(5) Venus n. 金星太阳系的行星都是用希腊神话里面的人物名来命名的。
(6) Mars n. 火星(7) Orbit n. 轨道(8) astronomical adj.天文学的(9) generate v. 产生The computer industry has generated hundreds of new jobs in the area.________________________________________________________据说，大陆板块的移动产生了地震和火山喷发。
新概念英语第三册学习笔记第55课FromtheEarth：Greetings
15.outer space 16.outer edge 17.blot out 18.in the first instance 19.little green men 20.in the realms of sth. 21.science fi课 FromtheEarth： Greetings
新概念英语第三册学习笔记第55课From the Earth： Greetings 第一段词汇解析 ①detect = discover, find。 ②in relative terms = relatively (speaking) , in relation to other things。 ③emit = send out。 ④ideal conditions = an environment which is perfect (for the development of life)。 第二段词汇解析 ①capable of = able to。 ②alternatively = on the other hand。 ③presence = existence。 第三段词汇解析 ①在 because 引导的原因状语从句中还有一个“ the further…system”作比较状语从句。 ②小绿人这个单词本身在英语语境中就是指代外星人，是想象的外星 小绿人。 Notes 学习笔记 词组归纳 /doc/7e4d1dcef7335a8102d276a20029bd64793e625b.html ky Way 2.in relative terms 3.solar system 4.far too 5.depend on 6.up to 7.life forms 8.at present 9.in existence 10.be capable of 11.Hubble telescope 12.because of 13.dust particles 14.look for
新概念英语第三册PPT课件：NCE3_lesson55(共64页)
We made him our monitor. 我们 选他当班长。
二、“make＋宾语＋adj.” 意为 “使某人 / 某事(变 得)……”。
The news that our team had won made us very happy.
它比我所想的要坏得多。 He argued that all matter was
infinitely divisible. 他坚持所有物质都可无限地分。 宇宙是无限大的。 The universe is infinitely large.
2.The first question to answer is whether a planet can actually support life.
参考翻译：第一个需要解答的问题是一 颗行星是否有能够维持生命的条件。
讲解：to answer不定式做后置定语
whether a planet can actually support life是表语从句
不定式后置定语
1) I have tons of letters to answer. 我有很多信要回。 2)She needed someone to take care of her
Milky way
太阳系
太阳系行星“裁员” 冥王星遭“降级”
冥王星为何被“降级”
新华网北京2006年８月２４日电国际天文学联合 会大会２４日投票决定，不再将传统九大行星之一 的冥王星视为行星，而将其列入“矮行星”。
大会通过的决议规定，“行星”指的是围绕太阳运 转、自身引力足以克服其刚体力而使天体呈圆球状、 能够清除其轨道附近其他物体的天体。在太阳系传 统的“九大行星”中，只有水星、金星、地球、火 星、木星、土星、天王星和海王星符合这些要求。 冥王星由于其轨道与海王星的轨道相交，不符合新 的行星定义，因此被自动降级为“矮行星”。八大行星冥王星
新概念英语III讲义55
Lesson 55 From the earth: GreetingsComprehension questions1. What has made it possible to detect planets in our own Milky Way and in other galaxies?2. Why is this a major achievement?3. Is finding planets proving hard?4. Will it prove more difficult to find life on distant planets?5. In our own solar system, why can't Venus support life?6. And what about Mars?7. How long has it taken for life to evolve on earth?8. Whether a planet can support life depends on two things. What are they?9. Is there any telescope in existence at present capable of detecting the presence of life?10. Will such a telescope be developed in the twenty-first century?11. Is it possible to look for life on other planets with earth-based telescopes?12. Wouldn't the Hubble telescope be suitable, either?13. How far away would a telescope have to be?14. Why would we have to blot out the light from a planet's star?15. Which life forms would be most likely to develop on another planet?16. What have bacteria done on earth?17. What does the writer think of the idea of our being visited by little green men?18. If we were to discover life on another planet, what would it do to our view of ourselves? Match the words or phrases with the definitions belowastronomy detect in relative terms emit infinitelybe capable of alternatively presence generate particleblot in the first instance cherish realm endeavour1._______________to send out sth such as light, heat, sound, gas, etc.2._______________existence3._______________the scientific study of the sun, moon and stars4._______________to produce or create sth5._______________to cover or hide sth completely6._______________relatively speaking7._______________extremely; with no limit8._______________to be able to9._______________on the other hand10._______________an attempt to do sth, especially sth new or difficult11._______________to discover12._______________very small piece of sth13._______________an area of knowledge14._______________to keep a hope or a pleasant feeling in your mind for a long time15_______________first of allStudy the following sentences1. Finding planets is proving hard enough, but finding life on them will prove infinitely moredifficult.2. …Venus is far too hot and Mars is far too cold to support life.3. Imagine a star up to twenty times larger, brighter and hotter than our own sun.4. A telescope would have to be as far away as the planet Jupiter to look for life in outer space,because the dust becomes thinner the further we travel towards the outer edges of our own solar system.Complete the passage with the help of the cluesRecent developments in _________(天文学)have made it possible to detect planets in our own Milky Way and in other galaxies. This is a major 成就because, in relative terms, planets are very small and do not e_________ light. Finding planets is proving hard enough, but finding life on them will prove __________(无限地) more difficult. The first question to answer is whether a planet can actually support life. In our own solar system, for example, Venus is far too hot and Mars is far too cold to s__________ life. Only the Earth provides ideal conditions, and even here it has taken more than four billion years for plant and animal life to e__________.Whether a planet can support life d__________ on the size and brightness of its star, that is its 'sun'. I_________ a star up to twenty times larger, brighter and hotter than our own sun. A planet would have to be a very long way from it to be c_________ of supporting life. __________(相反), if the star were small, the life supporting planet would have to have a close __________(轨道) round it and also provide the perfect conditions for life forms to develop. But how would we find such a planet? At present, there is no telescope in __________(存在) that is capable of detecting the p_________ of life. The development of such a telescope will be one of the great __________(天文学的)projects of the twenty-first century.It is impossible to look for life on another planet using earth-based ___________(望远镜). Our own warm __________(大气层)and the heat generated by the telescope would make it impossible to detect objects as small as planets. Even a telescope in orbit round the earth, like the very successful Hubble telescope, would not be suitable because of the dust ____________ (颗粒)in our solar system. A telescope would have to be as far away as the planet Jupiter to look for life in outer space, because the dust becomes thinner the further we travel towards the outer _________(边缘) of our own solar system. Once we detected a planet, we would have to find a way of b___________ out the light from its star, so that we would be able to 'see' the planet properly and _________(分析) its atmosphere. In the first instance, we would be looking for plant life, rather than 'little green men'. The life forms most likely to develop on a planet would be b____________. It is bacteria that have generated the ___________ we breathe on earth. For most of the earth's history they have been the only form of life on our planet. As Earth-dwellers, we always c__________ the hope that we will be visited by little green men and that we will be able to c__________ with them. But this hope is always in the __________(领域)of science fiction. If we were able to discover lowly forms of life like bacteria on another planet, it would completely change our view of ourselves. As Daniel Goldin of NASA observed, 'Finding life elsewhere would change everything. No human___________(努力)or thought would be unchanged by it. '。
新概念英语第三册lesson55生词及短语
新概念英语第三册lesson55生词及短语Lesson 55 astronomy第55课天文学Recent developments in astronomy may have madeit possible to detects in our own Milky Way and inother galaxies.天文学的最新发展使我们能够在银河系和其他星系发现行星。
The objective of astronomy is the exploration ofall phenomena outside the earth.天文学探索地球以外的一切天体现象。
I took a course in astronomy at college.我在大学里选了一门天文学的课程。
relative相对的This is a major achievement because,in relativeterms,planets are very small and do not emitlight.这是一个重要的成就，因为相对来说，行星体积小，而且不会发光。
What they have achieved is but relative success.他们获得的不过是相对意义上的成功。
This atmosphere of relative tranquility irated rather eased us.这种相对的宁静让我们感到紧张而不是放松。
infinitely无限地，无穷地Finding planets is proving hard enough,but finding lifeon them will prove infinitely moredifficult.发同行星已经相当艰难了，要在行星上发现生命简直是难上加难。
I have finally managed to find someone who islazier,infinitely lazier than myself.我终于找到了一个比我还懒——不知懒多少倍的人。
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新概念英语单词第三册第55课：来自地球的问候 astronomy ['strnm] 天文学
elative ['i：ltiv] adj.相对的
【单词搭配】relative theory相对论 relative terms相对来说的
【单词例句】
Please tell me the full information,such as prices, quality, quantity available and other relative particulars.
请详告价格、质量、可供数量及其他相关情况。
bacteria [bk'tr] 细菌
infinite ['nfnt] aaV无限的，无穷的
solar ['sl] adj，太阳系的
【单词搭配】solar energy太阳能
【单词例句】
A：A solar cell is a device for converting energy from the sunshine into electricit.
A：太阳能电池是一种将阳光转化为电能的能量转换装置。
B：Where canI buy it?
B：我在哪儿能买到？
Venus ['vins] 金星
Mars [mɑz] 火星
orbit ['bt] 运行轨道
oxygen ['ksd()n] 氧气
realm [relm] 领域
【单词扩充】domain领域 sphere领域
【单词搭配】the realm ofliterature文学领域
【单词例句】
A： He is an expert in this realm.
A：他在这个领域不过专家。
B：I hope he can solve the problem for me
B：我希望他帮我把这个问题给解决了。
astronomical [str'nmk()l] adj.天文学的
endeavour [n'dev; en-] 努力
generate ['denret] v.产生
【派生词】generative生产的
【单词搭配】generate interest使产生兴趣
【单词例句】
What do you think is the best way to generate passion?你认为产生激情的方式是什么？
particle ['pɑtk()l] 微粒，粒子
Jupiter ['dupt] 木星
blot [blt] v遮暗
analyse ['n()laz] v分析
【单词例句】
A：They analysed the situation very closely. A：他们非常周密地分析了形势。
B： Did they draw any conclusion?
B：他们得出了什么结论没有？
backwater['bkwt] 回水，死水
predecessor ['pridses] n.前任。