新概念英语三 Lesson 55 From the earth:Greetings 课件(共40张PPT)

(共40张PPT)
New Concept English
Book 3 Lesson 55
Part 1
Lead in
From the earth: Greetings
Part 2
text
(1) Recent developments in astronomy have made it possible to detect planets in our own Milky Way and in other galaxies.
单词：astronomy n.天文学
astro-词根表示_____________
astrology ________
astronaut _______
astrophysics __________
astronomer __________
astronomical _________
占星术
宇航员
和星星相关的
天体物理学
天文学家
天文学的
(1) Recent developments in astronomy have made it possible to detect planets in our own Milky Way and in other galaxies.
单词：galaxy： 银河系
词组：Milky Way：银河
（横跨星空的一条乳白色亮带）
翻译：飞机的发明使得人们能够环游世界。
_______________________________________________________________
The invention of the aeroplane has made it possible to travel around the world.
(2) This is a major achievement because, in relative terms, planets are very small and do not emit light.
单词：emit：v. 散发（光，热，声音等）
词组：a major achievement:一个重要的成就
单词：relative adj. 相对的
词组：in relative terms 相对而言
翻译：They now live in relative comfort.
_______________________
近义词：___________
名词：relative ：_____
他们现在过得比较舒适。
comparative
亲戚
(3) Finding planets is proving hard enough, but finding life on them will prove infinitely more difficult.
单词：infinitely adv. 无限地（尤用于比较）
翻译：There is an infinitely bright future ahead of you young people.
______________________________
翻译：我们的新教室比原来的旧教室要好多了。
_____________________________________________
扩展：形容词：_______
你们年轻人都有无限光明的前途。
Our new classroom is infinitely better than the old one.
infinite
(3) Finding planets is proving hard enough, but finding life on them will prove infinitely more difficult.
语法：finding：动名词作主语
句型：前半句用“hard enough”,后半句则换为“infinitely more difficult”, 语气上强烈递进、极有气势，用词丰富、不重复。
翻译：学习一门外语已经被证明是很难的了，但同时学习三门外语则是难上加难。
________________________________________________________________
__________________________________________________
Learning a foreign language is proving hard enough, but learning three foreign languages at the same time will prove infinitely more difficult.
(4) The first question to answer is whether a planet can actually support life.
词组：support life 维持生命
语法：
不定式作定语：
不定式与名词构成_________。
动宾关系
(5) In our own solar system, for example, Venus is far too hot and Mars is far too cold to support life.
单词：solar adj. 太阳的，太阳系的
solar system: _______
solar cell ___________
solar power ______
solar wind ______
月亮的：_____
阴历：____________
翻译：她总是给我们太多作业。
_____________________________________
太阳能
太阳能电池
太阳风
太阳系
lunar
lunar calendar
She always gives us far too much homework.
(5) In our own solar system, for example, Venus is far too hot and Mars is far too cold to support life.
单词：Venus n. 金星
单词：Mars n. 火星
太阳系的行星都是用希腊神话里面的人物名来命名的。
战神（Mars）和爱神维纳斯（Venus）在一起看起来很融洽。这里说明Venus是充满爱的，所以用来指金星，而且金星是非常热，表明了Venus的爱。而战神是主管战争的，所以非常冷酷，而Mars火星就是非常冷的，所以我们从英文角度来理解这两颗星星，就会比较容易了。
(6) Only the Earth provides ideal conditions, and even here it has taken more than four billion years for plant and animal life to evolve.
单词：ideal adj. 完美的、理想的，没有比较级、最高级
单词：evolve v. 进化
语法：only修饰earth不用部分倒装
(7) (Ph2) Whether a planet can support life depends on the size and brightness of its star, that is its “sun”.
词组：depend on 取决于
语法：whether引导的________
主语从句
(8) Imagine a star up to twenty times larger, brighter and hotter than our own sun.
词组：up to 数目上达到
e.g. I can take up to 4 people in my car.
(9) A planet would have to be a very long way from it to be capable of supporting life.
词组：be capable of 能够
扩展：be capable of doing sth. 能够做某事
翻译：知道自己仍然有能力解出高数题目还是非常的高兴。
___________________________________________________________________
___________________
I find it incredibly exciting to know that I‘m still capable of working out advanced mathematics problems.
(10) 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.
单词：alternatively adv.
扩展：alternative adj.& n.
语法：虚拟语气
翻译：要是现在没有下雨，我就去散步。
_________________________________________
翻译：如果战争爆发了，你会怎么做？
__________________________________
If the war broke out, what would you do
If it were not raining now, I would go for a walk.
(10) 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.
单词：orbit n. 轨道
(11) 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.
单词：telescope 天文望远镜
词组：at present 目前
词组：in existence ______
现存的
(12) The development of such a telescope will be one of the great astronomical projects of the twenty-first century.
单词：astronomical adj.天文学的
(13) (Ph3) It is impossible to look for life on another planet using earth-based telescope.
词组：earth-based 放置在地球上的
a Chicago-based company ____________________
总部设在芝加哥的公司
(14) Our own atmosphere and the heat generated by the telescope would make it impossible to detect objects as small as planets.
单词：generate v. 产生
翻译：The computer industry has generated hundreds of new jobs in the area.
_______________________________________________
翻译：据说，大陆板块的移动产生了地震和火山喷发。
____________________________________________________________________
___________
扩展：_________ 一代人
计算机行业已在该地区创造出数百个新的就业机会。
generation
It is said that the movement of continental plates generates earthquakes and volcanic eruptions.
(14) Our own atmosphere and the heat generated by the telescope would make it impossible to detect objects as small as planets.
语法：it做形式主语、形式宾语
翻译：和他挣一样多的钱是不可能的。
__________________________________________
It’s impossible to earn as much money as he does.
(15) Even a telescope in orbit round the earth, like the very successful Hubble telescope, would not be suitable because of the dust particles in our solar system.
单词：particle n. 粒子，微粒
翻译：There was not a particle of truth in what you said.
_______________________
他说的话没半点是真的。
(16) 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 edge of our own solar system.
单词：Jupiter n. 木星
翻译：越是在空气中暴露的时间长，石头就越坚硬。
_____________________________________________
The longer the stone is exposed to air, the harder it gets.
(17) 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 analyse its atmosphere.
单词：blot v. 遮暗
词组：blot sth. out 遮蔽(尤指阳光), 记忆, 忘却，抹掉(不快的记忆)
翻译：火山喷发出来的气体和灰尘遮住了阳光。
_________________________________________
翻译：She had blotted out all memory of the accident.
___________________________________
她已经抹去了对那次事故的所有记忆。
Gas and dust from the volcano blotted out the sun.
(17) 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 analyse its atmosphere.
单词：analyse v. 分析
翻译：After you analyze a sentence grammatically, you should be able to understand its meaning better.
_______________________________________________________________
翻译：有些物理学家是专门分析宇宙的发展。
__________________specialized in analyzing the development of the universe.
扩展：
名词：_______ 形容词：_________
当你从语法上分析一个句子以后，你就能更好地理解这个句子的意义。
analysis
analytical
Some physicists are
(18) In the first instance, we would be looking for plant life, rather than “little green men”.
词组： in the first instance 首先
翻译：首先，我们要收集足够的证据，而不是急于得出结果。
________________________________________________________________
____________
In the first instance, we should collect enough evidence, rather than jumping to conclusions.
(19) The life forms most likely to develop on a planet would be bacteria.
单词：bacteria n. 细菌
扩展：
单数：_________
virus：病毒
形容词：________
bacteriology _______
细菌学
bacterial
bacterium
(20) It is bacteria that have generated the oxygen we breathe on earth.
单词：oxygen n. 氧气
语法：It is… that…_______
翻译：正是莎士比亚写了那么多我们至今仍在阅读的剧本。
__________________________________________________
强调句
It is Shakespeare that wrote so many plays we read till today.
(21) For most of the earth’s history they have been the only form of life on our planet.
(22) 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.
单词：dweller 居民
翻译：他总是存有这样的希望：有一天他会中大奖，可以过上奢华的生活。
______________________________________________________________________
_____________________
He always cherishes the hope that he will win a lottery one day so that he will be able to lead an extravagant life.
(23) But this hope is always in the realms of science fiction.
翻译：这种故事只发生在文学作品里。
__________________________________________________
This kind of story would only happen in the realm of literature.
(24) If we were able to discover lowly forms of life like bacteria on another planet, it would completely change our view of ourselves.
单词：lowly adj. 低微的、低级的
(25) As Daniel Goldin of NASA observed, “Finding life elsewhere would change everything. No human endeavour or thought would be unchanged by it.”
单词：endeavour n.努力
翻译：Please make every endeavour to arrive on time.
_________________
翻译：她做了一切努力来帮助他的丈夫戒赌，但是都失败了。
___________________________________________________________________
扩展：
动词：________
近义词： attempt（正式用语，常常含有冒险之义）
try(日常用词，强调尽力去做，但不涉及结果)
请尽全力按时到达。
endeavour
She made her endeavour to keep her husband away from gambling, but it all failed.
(25) As Daniel Goldin of NASA observed, “Finding life elsewhere would change everything. No human endeavour or thought would be unchanged by it.”
句型：最后一句双重否定句等于肯定句。双重否定的运用使得句子更加漂亮。
篇章：引用名言收尾，回味无穷。
Part 4
bonus
九大行星
公转速度
金星：地球的姐妹行星
金星又被称作启明星，从地球仰望星空，除了月亮第二亮的就是启明星。
金星是一颗类地行星，因其质量与地球差不多，所以有时也被称为地球的“姐妹星”。