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(共24张PPT)
Unit 5 Looking into nature
Starting out & Understanding ideas
Learning Objectives
In this lesson, you will:
1. identify the key information about amber from the passage.
2. learn to analyze the passage’s content, writing style and language
3. share ideas about nature exploration.
What does the picture make you feel
The nature is so vast and beautiful while people seem so small in comparison.
Look and Say
The quiet desert and starry sky make me feel relaxed but a little lonely.
...
Look at the pictures and answer the questions.
Starting out
1 What do you know about these people
2 What do they have in common
Li Shizhen was a famous Chinese medical scientist from the Ming Dynasty. He wrote Compendium of Materia Medica(《本草纲目》), a great work on traditional Chinese medicine.
Charles Darwin was a British naturalist. He proposed the theory of evolution(进化论), explaining how species change over time.
Wang Zhenyi was a talented Chinese female scientist (from the Qing Dynasty). She studied astronomy, mathematics and medicine, and made contributions to these fields.
They were all scientists who loved learning about nature. They studied plants, animals, stars, or medicine to help people understand the world better.
Look at the picture and answer the questions.
1 What secrets of nature do you know
2 Which one do you want to explore more
Understanding ideas
Look at the title and the pictures. What is the passage about
Use the word cloud to help you.
amber 琥珀
The passage is about amber and how it acts as "a window on the past"—it helps unlock the secrets of nature, serving as a key to discoveries that can prove and explain changes in the natural world.
1 Imagine a dinosaur in an ancient forest. It is running around
looking for its next meal. With an angry cry, it opens its mouth,
raises its beautiful feather-covered arms, and...
2 Wait, feathers on a dinosaur For hundreds of years, people
believed that dinosaurs looked like huge lizards. Just look at all
those dinosaurs in books, films and TV shows! However, thanks to a piece of amber, scientists now know that this idea is wrong. In the amber from Southeast Asia, they found the tail of a dinosaur - with feathers.
3 These beautiful golden stones quietly keep pieces of the past. They can tell us whether dinosaurs had feathers, but that's not all. They also help us understand that life on earth has always changed. A piece of amber from Northern Europe, for example, holds a flower. This species no longer grows in this area. But the find proves that it did 35 million years ago. In the future, amber may also help us discover if other species have changed over time.
4 Thanks to amber, more than 300 unknown species have been
discovered. In a piece of amber from Africa, scientists found 13
ants. Research shows that they are a completely new species.
Scientists used to believe that ants came from the northern half of
the earth. The discovery of this African species has changed old
beliefs about the history of ants. Who knows whether this piece of
amber will tell us more secrets
5 As a window on the past, amber has been much studied. However, it's still not fully understood. We should put more effort into research. Then we can use this key to unlock more secrets of nature.
Choose where you are most likely to read this passage.
a in a popular science magazine about findings in nature
b in a newspaper report on exhibitions about dinosaurs
c in a sci-fi book about travelling 160 million years into the past
Complete the diagram with the correct form of the words and expressions from the passage.
Amber shows us 1________caught in time.
It shows us what ancient
species looked like.
2__________a piece of amber, scientists know that dinosaurs had feathers.
It helps us understand that life on earth has
3________________.
A piece of amber proves that a species of flower grew in Northern Europe 4__________ years ago.
secrets
Thanks to
always changed
35 million
More than 300 6_________
species have been discovered.
It helps us discover new species.
Scientists found a new species of 7_________ in a piece of amber from Africa.
Amber is a(n) 8__________on the
past, and a key to unlock more secrets of 9_______.
unknown
ants
window
nature
More comprehensive questions.
1. What is the main idea of the passage
2. What does the author mean by saying amber is “a window on
the past”
The passage mainly introduces how amber helps people to explore the secrets of nature.
The author means that amber lets us look directly into ancient times, almost like looking through a window. It shows us real pieces of history — feathers, insects, flowers — preserved inside, so we can see what life was like millions of years ago.
3. What is the main function of the last paragraph
The last paragraph summarize amber's role as a "window on the past" and a "key" to nature's secrets, and suggests we should do more research to unlock more of these secrets.
Think and share
1 What do you think of Paragraph 1 Why does the writer begin like
this
Learning to think for question 1
Writers have different writing styles.They use different methods to achieve their goals. These goals include making the text alive, making their arguments strong, getting readers' attention, etc.
I think it’s interesting. The writer begins with an exciting dinosaur scene to grab the reader’s attention. It makes the topic fun and makes me want to keep reading to learn more.
2 What are some other ways for you to learn about nature's secrets
We can also learn about nature’s secrets by:
reading science books or watching documentaries.
visiting museums or natural parks.
doing experiments or observing plants and animals outside.
using the internet to find science videos or articles.
Language Points
look for sb / sth在此处意为“寻找” 例如:
I'm looking for my keys. They are missing.我在找我的钥匙，
它们不见了。
She is looking for a new job with better opportunities.她正
在寻找一份有更好机遇的新工作。
1. It is running around looking for its next meal.
它正在四处寻找下一顿食物。
2. This species no longer grows in this area. But the find
proves that it did 35 million years ago.
虽然这个物种不再在这个区域生长。但这个发现证明，它在三千五百万年前曾存活于此。
no longer在此处意为“不再” 例如:
We no longer see each other since I moved away.自从我搬
走后，我们没再见过面。
It's no longer a secret.这已经不是秘密了。
3. Scientists used to believe that ants came from the northern half of the earth.
科学家们过去认为，蚂蚁来自地球的北半球。
used to (do)在此处意为“过去经常(发生),曾经”。 例如:
I used to play the piano when I was younger.我年轻的时候经
常弹钢琴。
I used to live in the countryside when I was a child.我小时候
住在乡村。

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