必修五 unit1 Great scientists Using language (1)

(共36张PPT)
Unit 1
Great scientists
Using language
Reading & Writing
Do you know what is the center of the solar system
Can you name the nine planets in the solar system
Mercury
Mars
Venus
Earth
Jupiter
Saturn
Uranus
Neptune
Pluto
Mercury 水星 Venus 金星
Earth 地球 Mars 火星
Jupiter 木星 Saturn 土星
Uranus 天王星 Neptune 海王星
Pluto 冥王星
Nine Planets in the Solar System
Nicolaus Copernicus
born: in Poland in 1473
died : May 24, 1543
He was one of the first scientists to use mathematical observation to collect information. He believed the sun is the center of the universe and the earth and other planets went around it.
Skim the text and draw the two theories of the
universe with the following pictures.
Sun
earth
Before Copernicus’ theory Showing Copernicus’ theory
Sun
earth
Before Copernicus’ theory Showing Copernicus’ theory
Sun
earth
earth
Sun
Showing Copernicus’ theory
A diagram showing the solar system with the earth at its centre
A diagram showing the solar system with the sun at its centre
Before
Copernicus’ theory
Read the text carefully, and then answer these questions.
Because the powerful Christian Church would have punished him for even suggesting such an idea
2. What was his theory about (Para 1)
All his mathematical calculations led to the same conclusion: that the earth was not the centre of the solar system. Only if you put the sun there did the movements of the other planets in the sky make sense.
1. Why could he not tell about his theory (Para 1)
3. What had the astronomers noticed in the sky (Para 2)
They had noticed that some planets in the sky seemed to stop, move backward and then go forward in a loop. Others appeared brighter at times and less bright at others.
4. When did Copernicus complete his theory (Para 3)
Between 1510 and 1514 he worked on it,
gradually improving his theory until he felt it
was complete.
5. How did he explain changes in the movement of the
planets and in the brightness of the stars When did he
publish his idea (Para 4)
He placed a fixed sun at the centre of the solar system with the planets going round it and only the moon still going round the earth. He also suggested that the earth was spinning as it went round it and this explain changes in the movement of the planets and in the brightness of the stars.
He published his idea as he lay dying in 1543.
6. Why do people think that there is a direct link between his ideas and the work of Isaac Newton, Albert Einstein and Stephen Hawking
Because his theory is now the base on which all our ideas of the universe are built. His theory replaced the Christian idea of gravity which said things fell to earth because God created the earth as the centre of the universe, He showed this was obviously wrong.
1) would have表示对过去的某种情况进行猜测, 或本来要做某事却因某种原因未做成,通常用来说明某一情况，但不象should或ought to 那样含有责备之意。
◆ Yet he could not tell anyone about his theory
as the powerful Christian Church would have
punished him for even suggesting such an idea.
Language points
1) I guess the poet would have been about 20 when she wrote her first poem.
2) Another worker wouldn’t have acted like that.
needn’t have + p.p.表示做了不必做的事，相当于，译为“其实没必要… …”
should have + p.p.表示应该做某事但实际上未做，译为“本应该… …”
should not have + p.p.表示本不应 该做某事但实际上做了，译为“本不应该……”
链接：
lead to通向，导致
All roads lead to Rome.
His actions could lead to him losing his job.
The discovery of new evidence led to _______.
A. the thief having caught
B. catch the thief
C. the thief being caught
D. the thief to be caught
C
◆
◆ Only if you put the sun there did the movements of the other planets in the sky make sense.
=
The movements of the other planets in the
sky make sense only if you put the sun there.
“only + 副词 /介词短语/状语从句” 位于句首句子要倒装。
1) Only if your identity has been checked, _____.
A. you are allowed in
B. you will be allowed in
C. will you allow in
D. will you be allowed in
2) Only then did I realize the importance of
knowledge.
3) Only in this way can we work out the maths
problem.
D
◆ make sense 有意义，有道理，说得通
1) What you say makes no sense.
2) It would make sense to leave early.
3) Can you make sense of this poem
你说的话没有道理。
还是早点走好。 （是明智的，合理的）
你看得懂这首诗吗？（理解或弄懂）
◆work on 从事
She is working on a new novel.= She is writing a new novel.
◆ complete vt. 完成
adj.完整的,完成的　
The workers haven’t completed the house yet.
When will the work be complete
◆enthusiastic: adj. 热心的，满腔热情的
enthusiastic support 热情的支持
be enthusiastic about 对某事充满热情
cautious adj. 十分小心的，谨慎的
My nephew is a cautious investor.
The old lady is very cautious with money.
He is cautious in his choice of words.
The boss is cautious about making promises.
careful, cautious含有“小心的，谨慎的”之意。
careful: 侧重做事谨慎、留心，特别注意
一些细节地方。
cautious: 着重考虑事情的后果，谨慎留
意，防止出差错。
reject vt. 拒绝，驳回，丢弃
He rejected their offer of a job.
He asked her to go to the movies three times, and each time she rejected him.
All apples with soft spots were rejected.
refuse, decline, reject这些动词均含“拒绝”之意。
refuse: 语气较重，指态度坚决，肯定无疑的
拒绝。常用结构是refuse to do。
decline: 指婉言谢绝他人的帮助或邀请等。
常用结构是decline doing / decline sb. to do。
reject: 多指由于某物某事某行为不能
让人满意而被当面直截了当地拒绝。后接
名词或代词，不能接动词不定式。
◆ If you were Nicolaus Copernicus, would you have hidden your theory for so many years Why or why not
Discussion
◆ As a scientist, one should be brave. But
Copernicus was afraid of being
attacked by the Christian Church. So
he had hidden his theory for so many
years. What do you think of this
Agree
1. He was cautious. if he had published his ideas,
he would have been killed just as Bruno who
was burned to death because his theory was
against the Christian Church.
2. Every time when a new idea appears, there
are always rejections. It’s normal. Scientists
should have patience to spread their truth.
3. It made no sense for him to publish his
theory in a hurry. He was just cautious not
coward. He should protect himself first.
Disagree
1.Copernicus was very coward. He should speak
out his discovery and let the world know the
truth earlier.
2.Science can never advance unless people
have the courage of their beliefs.
3.As a scientist, you must have the courage to
publish your findings. No matter how people
oppose them, time will show if your ideas are
right or wrong.
Write a short letter asking Copernicus (not) to publish his ideas so everyone can read them.
Writing
Persuasive writing
Please refer to P 8 Learning Tip.
Now write a short letter asking Copernicus to publish his ideas so everyone can read them.
First you need to collect your ideas.
He believes his new theory is true.
There are problems with the present theory.
He has done many years of observations to
prove his new theory is true.
Science can’t develop unless people publish
their ideas.
Time will show if his theory is true or not.
Here is a plan
Beginning: Tell Copernicus who you are and
why you want him to publish his ideas.
Paragraph 1: Reason 1 and evidence.
Paragraph 2: Reason 2 and evidence.
Summing up: Ask him to think again about
publishing his ideas.
One possible version
Dear Nicolaus Copernicus,
I am a student studying astronomy and I would very much like to read your new theory about the solar system. I hope you will publish it for several reasons.
I understand the problems with the present theory. The way the planets move is not what you would expect if the earth was the centre of the universe. It is also odd that the brightness of some stars seems to change. So I agree with you that we need a new theory.
I know your observations have been very carefully carried out over many years. Now you must have the courage to publish them. Science can never advance unless people have the courage of their beliefs. I know you worry about what will happen if you publish your new theory. No matter how people oppose it, time will show if your ideas are right or wrong.
So I hope you will feel you can publish your new theory.
Yours sincerely,
Zhang Hua
Surf the Internet and get more information about Copernicus.
Finish the Reading Task and Writing Task after class.
Revise the whole unit.