人教版（2019）选择性必修第二册 课件 unit 1 Science and Scientists Reading and Thinking & Learning About Language课件（

(共27张PPT)
Science and Scientists
Reading and Thinking & Learning About Language
Unit 1
我们应该学习科学家追求真理，勇于创新，无私奉献，淡泊名利的精神，培养优秀的思维品质，培养学科学，爱科学的精神。
We should learn from scientists’ spirit of pursuing truth, daring to innovate, selfless dedication and indifference to fame and wealth. Cultivate excellent thinking quality. Develop the spirit of learning science and loving science.
Unit topic 单元话题
Opening page
To raise new questions, new possibilities, to regard old problems from a new angle requires creative imagination and marks real advance in science.
—— Albert Einstein& Leopold Infeld
提出新的问题，发现新的可能，从新的角度审视已存在的问题，这些需要创造性的想象力，并标志着科学的真正进步。
——阿尔伯特·爱因斯坦&利奥波德·英费尔德
Reading and thinking
John Snow defeats “King Cholera”
Skim the text and answer the following questions.
1. Who was John Snow
He was a British doctor.
2. What is King Cholera
It used to be one of the most feared diseases in the world and millions of people died from it in the early 19th century.
3. What does “defeat” mean
It means to win against something.
4. What did John Snow do about King Cholera
He conducted research and found out how cholera spread.
Discuss the following stages of scientific research in groups. What order would you put them in
______ analyse the results
______ ask a question
______ draw a conclusion
______ collect data
______ find a problem
______ find supporting evidence
______ think of a method
7
3
4
2
1
5
6
What do you know about John Snow What kind of person is John Snow
John Snow is determined.
John Snow is smart.
John Snow is committed.
Snow _______________ __________the places where the people who _____had lived.
B
process
Read the passage and complete the chart below.
It was believed that cholera was caused by bad ___ or germs in ___________.
Many deaths occurred near the __________ in Broad Street.
Some people ________ drunk the water from the pump, and lived.
A woman and her daughter died in another part of London after ___________________________.
The pump water carried ____________.
The ______ of the pump was removed.
air
food or water
exactly marked on a map
died
water pump
drinking water from the pump
had not
cholera germs
handle
A
theories
C
evidence
D
conclusion
E
solution
Ask questions
One way to approach a reading passage is to ask questions about it. Asking questions can help you understand the content. It can also help you think more deeply about the topic.
Learning tips
1. Q: What ________________________________
A: Snow thought that cholera was caused by germs in food or water.
2. Q: Why__________________________________________
A: Snow had the handle from the pump removed so that it could not be used.
3. Q: How ____________________________
A: The cholera threat was defeated thanks to the work of John Snow.
caused cholera in the opinion of Snow
did Snow have the handle from the pump removed
was the cholera threat defeated
What questions would you ask to get the following answers
Find the main idea with each paragraph.
Paragraph 1. Cholera hit Europe in the early 19th century and John Snow showed how it could be overcome.
Paragraph 2. John Snow found a problem.
Paragraph 3. John Snow collected information and offered solutions.
Paragraph 4. John Snow found the truth about cholera.
Paragraph 5. John Snow contributed a lot to how to prevent cholera and how to study diseases.
1. What caused the outbreak of cholera in London in 1854
The water which came from the River Thames and had been infected by waste.
2. Was cholera destroyed completely
No.
3. How can we prevent cholera
By drinking pure or boiled water.
Detailed reading
4. What was the most important tool Snow used to defeat cholera
He used maps and statistics to analyse where the deaths occurred.
5. What common medical tools didn’t he use Why
He didn't use a microscope. He didn't test the water, nor did he draw blood or examine patients.
The reason was that medical science was not so advanced at that time.
6. How has John Snow’s work affected our daily lives
Learning About Language
re-
micro-
-ory
-ial
dis-
trans-
-ion
-ology
1 Find the words from the previous pages with the following prefixes or suffixes. Then add two more words of each prefix or suffix, and explain their meanings.
remove research
microscope microwave
contradictory satisfactory laboratory
substantial potential official
discover discourage disappear
transform
conclusion intervention infection invitation invention
epidemiology technology biology
2 Make phrases by combining the words in the left box with those on the right. Then complete the sentences using these phrases.
1. Many scientists ___________ the view that it is human activity that has caused global warming.
2. He was to ________ the accident because he drove on the wrong side of the road.
3. The man __________ being behind the robbery was seen crossing the street.
4. Since heart disease often _________ our lifestyle choices, we need to make healthy living an important part of our lives.
subscribe suspect blame link
to of for
subscribe to
blame for
suspected of
linked to
3 Replace the underlined parts with suitable words from the box.
1. It is not unusual for an athlete to be well-known while he is active, and quickly forgotten when his athletic career is over.
2. I’m sure she’ll deal with the changes very well because she’s very adaptable.
3. He was ready to serve dinner to his friends when he realized that he had forgotten to turn on the oven and the meat was not cooked yet.
4. He used his great influence to change the thinking of the scientific community on this issue.
5. Scientists have collected more data than expected to prove the theory.
raw a household name substantial statistics handle
a household name
handle
raw
substantial
statistics
4 Read this passage about medical plete it using the correct forms of the words in the box.
British scientists believe they may have found a way to fight the common cold. It blocks a key protein in the body’s cells that is to _______ for the spread of cold-causing virus. Targeting the host rather than the ________ was a bit non-traditional but made sense because it was tricky to target the virus. Cold-causing virus are not only of ____________ kinds, they also ________ rapidly, meaning they can quickly develop resistance to medicine. Researchers are working on making a form of medicine that can be taken directly into one’s lungs, to __________ the chance of side effects. Though these scientists have made __________ advances in their research, further ________ is needed to make sure such drugs are not so _______ that they harm the body.
infection multiple decrease severe transform proof blame substantial
blame
infected
transformed
substantial
decrease
proof
severe
multiple
Language Points
根据语境及汉语提示写出正确的单词或短语
（1）cause _______ (严重的) diarrhea, dehydration and even death
（2）become_________ (沮丧)
（3）______ and for all(最终地；彻底地)
（4）______________ (不一致的) theories
（5）an _________ (感染) from germs in food or water
（6）___________ (同意) to the second theory
（7）need ______ (证据)
（8） __________ (数量多的) deaths
（9） ___________ 水泵
（10）some ___________ (家庭)
severe
frustrated
once
subscribe
infection
contradictory
proof
water pump
households
multiple
（11）________(怀疑)=doubt
（12）be __________(应受到责备)
（13）the_______(把手) of the water pump
（14）through this____________ (干预)
（15）be stopped in its________ (被遏制住)
（16）be ________(污染) by waste
（17）through _______________(不懈的努力 )
（18）__________ (大幅度) decrease
（19）__________(改变)= change the way
（20）__________= what’s more
（21）the father of modern _____________ (流行病学)
to blame
suspect
handle
intervention
tracks
infected
substantial
tireless efforts
transform
moreover
epidemiology
知识精析
Accordingly he had the handle of the pump removed so that it could not be used.
因此，他把泵的把手移除，以便不会再被使用。
accordingly adv. 因此 ，相当于therefore, thus, as a result
so that=in order that 为了；以便
have sth. done= get sth. done 在这里可以表示完成，还可以表示请某人做某事
have/get+宾语+过去分词的三种含义：
(1)主语请别人做某事； (2)主语遭遇、遭受某一不愉快、不测的事情； (3)表完成(事情既可以是别人做完，也可以由主语参与完成)
You must have the computer repaired (by someone) at once. 你必须尽快请人把电脑修好。
Be careful, or you'll have your hands hurt. 小心，不然的话你的手会受伤的。
We have 2,000 words learned in three months. 三个月内我们已经学了2　000个词。
翻译句子
1. 他明天理发。
He will have his hair cut tomorrow.
2. 你的表修了吗？
Have you had your watch repaired
3. 他补了一颗牙。
He had a tooth filled.
Homework
Review what we have learnt and repeat the text with your own words.
THANK YOU