外研版(2019)选择性必修第一册Unit 5 Revealing nature Understanding ideas P50-52 课件(共37张PPT)

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名称 外研版(2019)选择性必修第一册Unit 5 Revealing nature Understanding ideas P50-52 课件(共37张PPT)
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版本资源 外研版(2019)
科目 英语
更新时间 2024-07-16 20:38:15

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(共37张PPT)
新外研版选择性必修Book 1
Understanding ideas P50-52
Unit 5 Revealing nature
Learning objectives
To talk about the information of Charles Darwin
To skim the main idea of each paragraph and the text
To read the main events in sequential/chronological order
To learn about the spirit of scientific exploration
Pre-reading
Questions:
Do you know the man in the books
What do you know about him
Charles Darwin (1809-1882)
was an English geologist and naturalist. In his famous book On the Origin of Species, Darwin proposed the theory that organisms evolve extremely slowly. He stated that the organisms that were better suited to their environments would survive and pass on their favourable characteristics to the next generations, while the less suitable organisms would gradually die out. He called this process “natural selection”.
Look and answer:
What species do you recognise in the picture
Paramecium, earthworm, snail, crab, fish, tortoise, bird, horse, human, frog, algae, moss, fern...
The ever-changing environment of nature
environmental changes
population immigration
genetic mutation
cultural preferences...
What factors can cause the process of evolution
evolutionary
tree
While-reading
Read the passage and talk about your understanding of the title.
Most commonly, people believe that a journey means a trip from one place to another, especially over a long distance and literarily a journey refers to the process by which something gradually changes and develops. The title may indicate that Darwin's research work leading to his discovery of evolution and the origin of species took quite a long time and great efforts, determination and courage to achieve.
The captain of the ship, the Beagle, wanted someone who would “profit by the opportunity of visiting distant countries yet little known”. The person who answered the call was not the captain’s first choice. It was a young man who had left medical school without completing his degree. What’s more, he had recently received a letter from his father predicting that he would be “a disgrace to yourself and all your family”. Despite all this, his adventures on this ship would lead to one of the most important scientific discoveries of all time.
贝格尔号的船长想要招募这样一名船员,这名船员将能“借此机会访问遥远而鲜为人知的国家并从中受益”。然而来应聘的人并不是船长心中的理想人选。这个年轻人从医学院肄业,并且在他刚收到父亲的来信,信中预言他将会成为 “你自己和你全家人的耻辱”。尽管如此,他的这次乘船探险之旅将带来有史以来最重要的一项科学发现。
Main idea: Darwin was not the captain’s first choice but his adventures on the Beagle led to one of the most importnat scientific discoveries of all time.

Skimming for the main idea of each paragraph.
The young man in question, Charles Darwin, was a geologist and naturalist, fascinated by rocks, plants and animals. He left England on the ship, the Beagle, in 1831. The journey gave him the chance to study various living things in their natural environments. After Darwin had spent some time in South America, his room on the ship was crowded with samples of the plants and animals he had collected. As he studied these, he asked himself the question: how did different species come to exist
这个受到质疑的年轻人就是地质学家和自然学家查尔斯·达尔文,他对岩石和动植物有着浓厚的兴趣。1831年,他搭乘贝格尔号从英格兰启程。这次旅程给了他研究自然环境中各种生物的契机。在南美洲度过一段时间后,他的船舱里堆满了收集到的动植物样本。当他研究这些样本时,他产生了疑问:这些不同的物种是如何产生的
Main idea: Darwin began his journey.

At that time, people believed that all species had appeared on Earth at the same time, and had not changed since. But Darwin began to think differently. He noticed that some species of animals were very similar to each other. Maybe animals evolved as they adapted to their changing environments It was just an idea, but enough to inspire Darwin to look for more evidence.
当时,人们认为所有的物种都是同时出现在地球上的,并从此再无变化。但达尔文开始有了不同的想法。他注意到,有些不同物种的动物彼此间很相似。也许动物为了适应不断变化的环境会逐渐进化?虽然这只是一个设想,但足够激励达尔文去寻求更多证据。
Main idea: Darwin began to think differently.

When the Beagle reached the Galápagos Islands in 1835, Darwin saw a variety of new species, but it was the birds that interested him the most. Darwin noticed that there was a difference between the finches on each of the islands. It seemed their beaks had evolved according to what food was available on that particular island.
1835年,当贝格尔号抵达加拉帕戈斯群岛时,达尔文发现了各种各样的新物种,但最令他感兴趣的是鸟类。达尔文注意到,在群岛中的每一个小岛上,雀鸟之间有所不同。它们的喙似乎是根据所在岛屿上可觅得的食物进化而来的。
Darwin suspected that the finches had evolved from a common ancestor, which had arrived on the islands a long time before. Over time, it had slowly evolved into many new species. And that was the answer to how new species of plants and animals came to exist: they evolved from earlier ancestors.
达尔文猜想这些雀鸟是由共同的祖先进化而来的。很久以前,雀鸟的祖先来到这片群岛,随着时间的推移,慢慢进化成许多新的种类。于是,关于动植物的新种类是如何产生的这个问题就有了答案:它们是从早期的祖先进化而来的。
Main idea: Some bird on the Galápagos Islands interested Darwin .
Main idea: Darwin suspected that the birds evloved from earlier ancestors.


It was a completely new idea—a theory of evolution. Darwin explained this theory in his book, On the Origin of Species. It was not published until 1859 and immediately caused a storm. Many people refused to believe that living things, including humans, had evolved from lower forms of life. They were shocked. But Darwin’s scientific studies were so convincing that more and more people started to believe his theory.
这是一个全新的观点—进化论。达尔文在他的《物种起源》一书中解释了这一理论。这本书直到1859年才出版,出版后立即引起轰动。很多人拒绝相信包括人类在内的所有生命都是从更低级的生命形式进化而来的。他们对此感到震惊。然而达尔文的科学研究很有说服力,越来越多的人开始接受他的理论。
Today, On the Origin of Species is regarded as one of the most important works ever written. It has changed ideas about life on Earth forever. And it all began with the journey on the Beagle.
如今,《物种起源》被认为是迄今为止最重要的著作之一。它彻底地改变了人类对于地球上生命的认识。而这一切都开始于贝格尔号的探索之旅。


Main idea: More and more people started to believe Darwin’s theory of evolution.
Main idea: On the Origin of Species is regarded as one of the most important works ever written.
Skimming for the main idea of the text.
1 Darwin’s interest in various living things made him a
great naturalist.
2 Darwin’s journey on the Beagle inspired his Theory
of Evolution.
3 Darwin went on a journey to confirm his theory that
humans had evolved over time.
This passage is a narrative essay, in which Darwin’s journey of discovery is described in chronological order. This kind of essay is usually used to tell about a specific person or event. So it’s convenient to present all the facts from earlier to the later and it’s more understandable for the readers.
Step 1. The beginning of the story
Step 2. The main events in sequential/chronological order
Step 3. The ending of the story
Remember: Don’t jump from one thing to another in the past but move in sequential order.
Order the puzzle pieces and complete.
1
2
3
4
5
very similar to each other
come to exist
Maybe animals evolved as they adapted to their changing environments
1
2
various living things in their natural environments and samples of the plants and animals he had collected.
had evolved from a common ancestor, which had arrived on the islands a long time before
that there was a difference between the finches on each of the islands.
had evolved according to what food was available on that particular island.
slowly evolved into many new species.
had evolved from lower forms of life
Try to retell the story:
On his journey
Generate ideas
Look for more evidence
Develop ideas
Propose a theory
Discuss:
Why did Darwin not publish his Theory of Evolution until
1859, about twenty years after his discovery
After-reading
Think and share
1 Why were many people “shocked” by Darwin’s theory
At that time, many people believed that all species had appeared
on Earth at the same time and had not changed since, but
Darwin’s theory proposed that living things, including humans,
had evolved from lower forms of life, which, as a result, shocked
many people.
2 What kind of person was Darwin according to the passage
Darwin was a determined man. He had strong curiosity and
interests in science and was good at thinking and making
discoveries.
3 How do you think the human species will evolve in the future
4 What have you learnt about the spirit of scientific exploration
How can this spirit help you in your life and studies
新外研版选择性必修Book 1
Language points P50-51
Unit 5 Revealing nature
课文回顾:
The captain of the ship, the Beagle, wanted someone who would “profit by the opportunity of visiting distant
countries yet little known”. The person who answered the call was not the captain’s first choice. It was a young
man who had left medical school without completing his degree. What’s more, he had recently received a letter
from his father predicting that he would be “a disgrace to yourself and all your family”. Despite all this, his
adventures on this ship would lead to one of the most important scientific discoveries of all time.
who引导的定语从句,修饰先行词someone,关系词在定语从句中作主语,不能省略
鲜为人知的
who引导的定语从句,修饰先行词person,关系词在定语从句中作主语,不能省略
who引导的定语从句,修饰先行词young man,关系词在定语从句中作主语,不能省略
动词的现在分词,非谓语动词,作宾补,和逻辑主语his father之间是主动关系
science n.科学 scientist n.科学家 scientific adj.科学的
The young man in question, Charles Darwin, was a geologist and naturalist, fascinated by rocks, plants and
animals. He left England on the ship, the Beagle, in 1831. The journey gave him the chance to study various
living things in their natural environments. After Darwin had spent some time in South America, his room on
the ship was crowded with samples of the plants and animals he had collected. As he studied these, he asked
himself the question: how did different species come to exist
fascinate 使着迷,fascinating 令人着迷的,fascinated 着迷的,
that/which引导的定语从句,关系词在定语从句中作宾语,可以省略
过去完成时态,从句表示的动作发生在主句动作之前,主句用一般过去时,从句用过去完成时
用...堆满,挤满
形成
At that time, people believed that all species had appeared on Earth at the same time, and had not changed
since. But Darwin began to think differently. He noticed that some species of animals were very similar to each
other. Maybe animals evolved as they adapted to their changing environments It was just an idea, but enough
to inspire Darwin to look for more evidence.
inspire sb to do sth激励某人去做某事
adapt to sth 适应...(注意:to为介词)
similar to sth与...相似
过去完成时,某一时间或动作之前已经发生或完成了的动作
When the Beagle reached the Galápagos Islands in 1835, Darwin saw a variety of new species,
but it was the birds that interested him the most. Darwin noticed that there was a difference between the finches
on each of the islands. It seemed their beaks had evolved according to what food was available on that particular island.
Darwin suspected that the finches had evolved from a common ancestor, which had arrived on the islands a long
time before. Over time, it had slowly evolved into many new species. And that was the answer to how new
species of plants and animals came to exist: they evolved from earlier ancestors.
a variety of 种种,各种各样的
强调结构:It is/was+被强调的成分+that+句子剩余部分
宾语从句,放在介词to后作宾语
定语从句,修饰先行词ancestors,此处指鸟类,为物,关系词which在定语从句中作主语,不能省略。
over time 随着时间的推移
It was a completely new idea—a theory of evolution. Darwin explained this theory in his book, On the Origin of Species. It was not published until 1859 and immediately caused a storm. Many people refused to believe
that living things, including humans, had evolved from lower forms of life. They were shocked. But Darwin’s scientific studies were so convincing that more and more people started to believe his theory.
Today, On the Origin of Species is regarded as one of the most important works ever written. It has changed ideas about life on Earth forever. And it all began with the journey on the Beagle.
not...until...,直到...才...until+时间/状语从句
be regarded as...被认为是...;
written为过去分词作后置定语,与前面的名词构成被动关系
shocked adj.描述人的感受或心理
convincing adj.令人信服的,描述事物的特征
distant
1
evolve
beak
sample
geologist
Find and match
an example or small amount of something that shows you what all of it is like
far away in space or time
when a type of plant or animal evolves, its physical form changes over a long period of time
a scientist who studies geology
the hard pointed mouth of a bird
Read and complete the sentences with the new words above in the right forms.
These unique plants ________ undisturbed for millions of years.
His father, being a ________, was away from home most of the time.
I took home some ________ of curtain fabrics.
The gull held the fish in its _____.
The sun was setting over the ________ mountains.
beak
samples
geologist
distant
evolved
answer the call
2
in question
first choice
a variety of
Find and match
各种各样的,种种
响应号召
正在考虑,讨论中的
a disgrace to
是耻辱,是丢脸的事
第一选择,首选
Read and complete the sentences with the new phrases above.
The photograph __________ was taken long before I met you.
The island offers such ___________ scenery and wildlife.
Acting wasn’t her __________ of vocation.
So will the ECB and Germany ________________
The filthy streets are ___________ the town.
in question
first choice
a disgrace to
a variety of
answer the call
It was a young man who had left medical school without completing his degree.
3
句意:这正是那个当初没有完成学位就离开医学院的年轻人。
强调句:It’s +被强调部分+ that/who+ 句子其他部分。此结构强调的成分仅限于主语、宾语和状语。
【句子分析】
试找出文中的另一个强调句。
...but it was the birds that interested him the most.
② It is ten years _____ Miss Green returned to Canada.
A. that B. when
C. since D. as
【经典例题】
① It was last night _____ I see the comet.
A. the time B. when
C. that D. which
解析:①考查强调句的结构:It’s +被强调部分+ that/who+ 句子其他部分。只有强调部分是人时,用who, 其余都用that。②考查连词用法。A为干扰项,当去掉It’s...that时,原句不成句,因此它不是强调句。


What's more, he had recently received a letter from his father predicting that he would be "a disgrace to yourself and all your family".
4
句意:并且在他刚收到的家书中,父亲预言他将会成为“自己和家人的耻辱”。
They built a highway leading into the mountains.
非谓语动词predicting在此处做定语,解释说明前面名词letter的内容。
例:他们修建了一条通往山里的公路。
【句子分析】
Darwin suspected that the finches had evolved from a common ancestor....
5
句意:达尔文猜想,这里所有的雀鸟都由共同的祖先进化而来
suspect sth. 察觉到……;怀疑……
suspect as.... 怀疑某人为…者
suspect sb of sth 认为某人有……的嫌疑
suspect that....怀疑可能……
suspect sb. to do sth.怀疑某人做某事
例:我怀疑他打破了那扇玻璃窗。
I suspect him to have broken the window.
Thank you!