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(共30张PPT)
Unit 5
Looking into nature
Starting out & Understanding ideas
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.
Look at the pictures and answer the questions.
1
1. What do you know about these people
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.
2 What do they have in common
① They are all great nature explorers.
② They all used scientific methods —They all observed the world carefully, did research, and wrote down their findings. (e.g., Li wrote Compendium of Materia Medica; Darwin published On the Origin of Species; Wang recorded her astronomical findings).
③ They all had a strong scientific spirit—They devoted their lives to exploring nature and shared their important discoveries with the world!
Look at the picture and answer the questions.
2
1 What secrets of nature do you know
Secrets of nature
Nature has many secrets waiting for us to explore.
Understanding ideas
Look at the title and the pictures. What is the passage about
Use the word cloud to help you.
Look at the title and the pictures. What is the passage about
1
What does ‘caught in time’ mean
Can secrets be ‘caught’ How
What secret might be caught in the amber pieces
Which words in the cloud might be our ‘clues’
What is the passage about
A. How amber helps scientists unlock the secrets of nature.
B. How to make amber and use it in daily life.
C. How amber came into being.
Skim and check.
√
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
√
How is it organized
Paras. 1-2:
The Shocking Discovery!
(an exciting example)
Paras. 3-4: The Superpowers of Amber! (Explain more about what amber can do.)
Para. 5: Future Mission! (Summary & inspiration)
The structure: an exciting opening → explanations of facts → an inspiring conclusion
Scan and answer.
How many secrets are mentioned in the passage What are they
Three.
A/B/C层
The secret about the dinosaur
The secret about
the flower
The secret about
the ants
About the dinosaur
What’s in the amber
Where was it found
What did scientists find through it
What secrets does it tell
A dinosaur tail with feathers.
In Southeast Asia.
Dinosaurs had feathers.
What dinosaurs looked like.
Read Paragraphs 1–4 and fill in the form.
About the flower
What’s in the amber
Where was it found
What did scientists find through it
What secrets does it tell
A flower.
In Northern Europe.
The flower grew there 35 million years ago.
Life on earth has always changed.
About the ants
What’s in the amber
Where was it found
What did scientists find through it
What secrets does it tell
13 ants.
In Africa.
The ants are a completely new species. Ants did not only come from the northern half of the earth; they also lived in Africa.
There are many unknown species for us to discover.
Read Paragraph 5 and answer.
What does the writer compare amber to
A window on the past and a key to unlock more secrets of nature.
Amber shows us
what dinosaurs looked like.
life on earth has always changed.
a window on the past
a key to unlock more secrets of nature
there are many unknown species for us to discover.
Old Beliefs New discoveries (What amber has shown)
Secret 1 They believed that dinosaurs looked like ___________. Amber shows that some dinosaurs had _________.
Secret 2
Secret 3 They believed that ants came only from ____________ half of the earth. Amber has helped prove that a new species of ants also lived in ______ long ago.
Complete the table below to show how old beliefs were unlocked by secrets caught in amber.
huge lizards
feathers
They thought that a certain kind of ________________
_________________ long ago.
flower did not grow in Northern Europe
Amber proves that this flower ______ there 35 million years ago.
the northern
Africa
grew
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
Pay attention to the expressions.
寻找
羽毛覆盖的手臂
幸亏；由于
一块来自北欧的琥珀
不再
300多种未知物种
过去经常(发生);曾经
新物种
北半球
关于……的古老看法/信念
把更多的精力放在研究上
揭开更多大自然的秘密
Translate the following expressions into English.
1. 寻找
2. 羽毛覆盖的手臂
3. 幸亏；由于
4.一块来自北欧的琥珀
5. 不再
6. 300多种未知物种
7. 过去经常(发生);曾经
8. 新物种
9. 北半球
10. 关于……的古老看法/信念
11. 把更多的精力放在研究上
12. 揭开更多大自然的秘密
look for
feather-covered arms
thanks to
a piece of amber from Northern Europe
no longer
more than 300 unknown species
used to
new species
the northern half of the earth
old beliefs about...
put more effort into research
unlock more secrets of nature
7
Thanks to
35 millions
unknown
ants
secrets
window
nature
Retell the passage according to the information.
1. It is running around looking for its next meal.
它正在四处寻找下一顿食物。
look for sb/sth
寻找（强调寻找的动作和过程，不关注是否找到目标）
① She is looking for her lost notebook in the classroom.
她正在教室里找她丢失的笔记本。
② I'm looking for my keys. They are missing.
我在找我的钥匙。它们不见了。
① My dad looked for his car key everywhere last night but didn't find it.
昨晚我爸爸到处找他的车钥匙，但没找到。
② Please find out when the train leaves.
请查一下火车什么时候离站。
③ The little boy discovered a big ant nest under the tree.
小男孩在树下发现了一个大蚁巢。
★find意为“找到，发现”，强调的是找的结果；
★find out意为“找出，发现， 查明”，多指通过调查、寻问、打听、研究之后搞清楚、 弄明白；
★discover意为“发现”，一般指发现客观事物的存在，发现已存在而不为人所知的事情。
根据句意，用discover, find, look for 或find out的适当形式填空。
1. Where did you __________ your bike
2. Please __________ who broke the window.
3. ― What are you doing
― I am __________ my cat, but I can't _________ it.
4. Scientists __________ a new kind of plant last year.
find
find out
looking for
find
discovered
4. 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)
过去经常(发生), 曾经
(表示过去惯常做某事，而现在不做了。)
否定式：didn't use to do
① My grandfather used to smoke, but he gave up two years ago.
我爷爷过去常常抽烟，但两年前戒掉了。
② I used to live in the countryside when I was a child.
我小时候住在乡村。
be used to sth / to doing sth
习惯于(做)某事
① We're used to the cold weather in winter.
我们已经习惯了冬天的寒冷天气。
② He is used to getting up early.
他习惯早起。
Must do:
1. Read the passage "Secrets caught in time" aloud. Try to remember amber's three superpowers.
2. Preview grammar part on pages 71-72.
Choose to do:
What amazing thing in nature do you want to explore Write down your idea.
Homework

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