选择性必修第一册Unit5 A Journey of Discovery（课件，25张PPT）

(共25张PPT)
学习目标
学完本节课，学生能够：
1. 熟悉话题语境，获取课文主旨大意；
2. 感知叙述类科学游记的文本结构和语言特点，
按照时间和事件发展顺序梳理Darwin发现之旅；
3. 学习掌握并运用相关词句简述Darwin的发现之旅；
4. 理解科学基于实践，体会科学探索的艰辛，
学习科学家的科学和创新精神。
A Journey of Discovery
ape
--- ancestor
祖先
lower forms of life
higher forms of life
evolve---evolution
An evolutionary tree
The Theory of Evolution
On the Origin of Species
《物种起源》
On the origin of species
On the origin of species
italic type 斜体
What is the book about
2. What is the remark on the book Why
Para____
6-7
1. the content :
2. people’s reactions :
The theory
After the journey
The book on the Origin of Species, about the theory of evolution, is regarded as one of the most important works ever written.
…evolve from…
shocked --- refuse to believe
believe
convincing
began with a journey on the Beagle
The book
Which one is the best
A. Darwin’s interest in various living things made him
a great naturalist.
B. Darwin’s journey on the Beagle inspired his Theory of Evolution.
C. Darwin went on a journey to confirm his theory that humans had evolved over time.
Main idea
The structure
1
2--5
The text is organized in order of____ .
Para__
Para___
Para 6-7
time
Before the journey
During the journey
England
In 1831
In 1835
Despite all this, his adventures on the ship would lead to one of the most important scientific discoveries
of all time. ( paraphrase )
Before the journey (Para 1)
Darwin was not his first choice.
2. He would be“a disgrace to yourself and all your family”.
1. He left medical school without completing his degree.
Although people doubted Darwin, he began his most important scientific discovery journey on the Beagle.
in question
The captain’s remark on Darwin:
The reasons
make sb. ashamed/embarrassment
Darwin studied …
2. He noticed …
During the journey (para 2-5)
Darwin asked two questions:
1. 2.
Darwin suspected …
It had…
On the Galapagos Island
He noticed…
2. It seemed …
_________ ideas
________ ideas
look for more _______
on his journey
The Theory of Evolution
Darwin did much research
before publishing his book.
generate
develop
evidence
propose a theory
2. Maybe…evolved ….adapted to
…changing environment.
1. How ….come to exist
1831 England
study_________________________
South America
1835 the
Galapagos
Islands
collect_______ and ask ______________
notice________________
suspect_______________
answer______________
A theory of
evolution
Retell
Darwin began his journey
from _____in ____. He……
1.What kind of person was Darwin according to the passage
2. What have you learned from Darwin’s journey of discovery
Darwin’s research work led to his discovery of evolution.
The book took quite a long time and great efforts, courage
and determination to achieve.
Scientific discoveries are based on the research and the evidence.
Group Work
`
？
hard work
perseverance
industry
endurance
talent
bravery
Self-belief
interest
courage
What other people think of you doesn’t have to influence what you become.
----- Stephen Curry
…
How can this spirit help you in your life and studies
1. He studied:
various living things in their natural environments and samples of animals and plants he had collected
2. He noticed
that some species of animals were similar to each other.
on his journey
Darwin asked 2 questions:
1. How did different species come to exist
2. Maybe Animals evolved as they adapted to
their changing environment.
come into being/ form /appear
On the Galapagos Island
1. He noticed
there was a difference between the finches on each of the islands.
2. It seemed
the beaks had evolved according to what food
was available on that particular island.
beak 鸟喙
1. Darwin suspected
that the finches had evolved from a common ancestor.
2. It had slowly
evolved into many new species.
Language points
The person who answered the call was not the captain’s first choice.
first choice: the thing or person you like best 首选
e.g. Acting wasn’t her first choice of vocation.
表演不是他职业的首选。
2. 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.”
predicting that he would be “a disgrace to yourself and all your family.”
现在分词短语作定语，解释说明前面的名词letter。
a disgrace to… 意为：是…的耻辱
e.g. You are a disgrace to the medical profession. 你是医学界的耻辱。
3. Despite all this, his adventures on this ship would lead to one of
the most important scientific discoveries of all time.
of all time 有史以来
e.g. This is my favorite song of all time.
这是我有史以来最喜爱的一首歌。
4. The young man in question, Charles Darwin, was a geologist and naturalist, fascinated by rocks, plants and animals.
in question: being discussed or considered 正被讨论的
e.g. The photograph in question had been taken before I met you.
正在讨论的这张照片是我认识你之前拍的。
5. Maybe animals evolved as they adapted to their changing environment
adapt to 适应
e.g. The children are finding it hard to adapt to the new school.
孩子们觉得很难适应新学校。
6. 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.
a variety of…各种各样的（同义词various）
e.g. Our school provides a variety of/various after-class activities for the students.
我们学校为学生提供了各种各样的课后活动。
It was the birds that interested him the most.是一个强调句式
It is/was + 要强调的部分（主语、宾语、状语）+ that（强调的是人可以用who）+句子其余部分
这个结构是强调句的基本结构。
e.g. It was on the ship, the Beagle, that Darwin studied a variety of species.
达尔文是在名为the Beagle的船上对多种物种进行了研究。
7. It was not published until 1895 and immediately caused a storm.
cause a storm 原意为引起风暴，此处取其引申义 “引起轰动”。
e.g. The newspaper is in its declining years. They don’t care; they quite like to cause a storm.
这家报纸正在走下坡路，它们豁出去了，一心只想制造轰动。
8. But Darwin’s scientific studies were so convincing that more and more people started to believe his theory.
convincing adj. making you believe that something is true or right
令人信服的
e.g. There is convincing evidence that smoking causes lung cancer.
有令人信服的证据表明吸烟导致肺癌。
convince的用法
convince sb. of sth. 使某人相信某事
e.g. You’ll need to convince them of your enthusiasm for the job.
你要使他们相信你殷切希望得到这份工作。
convince sb. to do sth. 说服某人做某事。
e.g. I’ve been trying to convince him to see a doctor.
我一直劝他去看病。