高中英语人教版 (2019)选择性必修 第二册Unit 1 Science and Scientists教学设计

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2019新人教高中英语选择性必修二
Unit 1 Discover Useful Structures 公开课教案
Teaching aims:
By the end of the period, students will be able to:
1.To analyse the forms and features of predicative clauses.
2.To learn about the functions of predicative clauses in the context.
3.To use predicative clauses in the given context.
Teaching key and difficult points:
1. Help students to analyse and use predicative clauses.
2. Instruct students to use predicative clauses to express their own ideas.
Teaching procedures:
StepⅠLead-in
In those days,there were two contradictory theories to explain how cholera spread.One theory was that bad air caused the disease.Another was that cholera was caused by an infection from germs in food or water.Snow subscribed to the second theory.One evidence is that a woman and her daughter had died of cholera after moving away from Broad Street.It seemed that she liked the water from the pump so much that she had it delivered to her house every day.The truth was that the water from the Broad Street pump had been infected by waste.
1.Can you find any predicative clauses?
2.Why do you think they are predicative clauses?
3.What are the main linking verbs?
Suggested answers:
1.In those days,there were two contradictory theories to explain how cholera spread.One theory was that bad air caused the disease.Another was that cholera was caused by an infection from germs in food or water. Snow subscribed to the second theory.One evidence is that a woman and her daughter had died of cholera after moving away from Broad Street.It seemed that she liked the water from the pump so much that she had it delivered to her house every day.The truth was that the water from the Broad Street pump had been infected by waste. 
2.Because there are linking verbs closely before the predicative sentences.
3.
Linking verbs状态类:be,seem,appear,keep,remain,　stay...感官类:look,smell,taste,sound,feel...变化类:become,get,turn,grow,fall,　come,go...
StepⅡ　Observe and analyse
Activity 1　Ask and answer the questions in pairs using the information from the reading passage.(P5 Activity 2)（红色部分为学生作答）
1.What was Snow’s discovery in two particular streets in London?
Snow’s discovery in two particular streets in London was that the cholera outbreak was so severe that more than 500 people died in ten days. 
2.What was Snow determined to find out during the 1854 outbreak of cholera in London?
What Snow was determined to find out was why so many people died/the outbreak of cholera had caused over 500 deaths within ten days. 
3.What were the exact places Snow marked on the map?
The exact places Snow marked on the map were where all those who died had lived/ all the dead people had lived. 
4.What was the finding that Snow announced?
Snow’s finding was that the pump water carried cholera germs/ the water pump was to blame for the spread of cholera. 
Activity 2　Fill in the blanks.
1.Snow’s discovery in two particular streets in London was that the cholera outbreak was so severe that more than 500 people died in ten days. 
2.What Snow was determined to find out was why so many people died. 
3.The exact places Snow marked on the map were where all those who died had lived. 
4.Snow’s finding was that the pump water carried cholera germs. 
　　Activity 3　Fill in the form.
引导词
that
which
whether
what
who
As if/as though
why
when
where
how
作的成分
不作成分
定语
表语
不作成分
主语 宾语
表语 定语
主语
宾语表语
不作成分
状语
状语
状语
状语
意思
无意思
哪一个
是否
什么
谁
好像
为什么
什么时候
在哪里
如何;怎样

Step Ⅲ Practice
Activity 1　Complete David’s lines(A~E) by filling in guiding words.(P5 Activity 3)
as if　that　what　who　when　how　why　whose
which　whether
A.Absolutely.You may not believe it,but that was 　　　　　happened at the initial stage of our group’s research on developing a vaccine for malaria. 
B.Yes,it is.And it seemed 　　　　　all the theories were useful,but the fact was 　　　　　we couldn’t persuade one another that one theory was better than another. 
C.Exactly.The problem was not about 　　　　　all our theories were equally good,but in deciding 　　　　　theory to depend upon. 
D.We realized that what we cared about was not 　　　　　aspect we needed to develop a theory in,but rather 　　　　　we can reduce the cost of a vaccine without reducing its effect! 
E.You’re right.At last,we became focused on the key issue,which was 　　　　　we had to carry out the research in the first place. 
Suggested answers:
A:what　B:as if;that　C:whether;whose/which/what　D:which/what;how　E:why
Activity 2　Put A~E in the correct order using the above methods.Then check the answers and state the reasons.(P5 Activity 3)
A.Absolutely.You may not believe it,but that was what happened at the initial stage of our group’s research on developing a vaccine for malaria.
B.Yes,it is.And it seemed as if all the theories were useful,but the fact was that we couldn’t persuade one another that one theory was better than another.
C.Exactly.The problem was not about whether all our theories were equally good,but in deciding whose theory to depend upon.
D.We realized that what we cared about was not which aspect we needed to develop a theory in,but rather how we can reduce the cost of a vaccine without reducing its effect!
E.You’re right.At last,we became focused on the key issue,which was why we had to carry out the research in the first place.
Maria:This mix of theory and data is one of the key characteristics of what we call science.
David:______________________________
Reason:______________________________
Maria:With your theoretical framework?
David:________________________________
Reason:__________________________________
Maria:Deciding on a theory is definitely of critical importance.
David:_____________________________________
Reason:____________________________________
Maria:This was when you should have calmed down and got down to doing some solid work.
David:__________________________________________
Reason:_________________________________________
Maria:So what happened in the end?
David:__________________________________________
Reason:________________________________________
Suggested answers:
A(Logical connector)　C(Lexical connector) B(Grammatical connector)　E(Logical connector) D(Grammatical connector)
Activity 3　Answer the following questions about the dialogue using the predicative clauses.
1.What was David’s group’s research?
2.What was the problem?
3.What was the key issue?
4.What did they care about?
Suggested answers:
1.David’s group’s research was that they wanted to develop a vaccine for malaria.
2.The problem was that they had to decide which theory to depend upon.
3.The key issue was why they had to carry out the research in the first place.
4.What they cared about was how they could reduce the cost of a vaccine without reducing its effect.
StepⅣ Language use and share
Activity 1　Work in groups.Complete the conversations using the predicative clauses.Every group can choose one or two dialogues,and each member must complete at least two predicative clauses.
1.A:Paper making,printing,gunpowder,and the compass are the four great inventions of ancient China.They are significant contributions of the Chinese nation to the world.
B:Sure,they are.What I want to know though is 　　　　　　　　　　　　. 
2.A:The ancient Chinese were the first to invent paper and printing.Then they went on to invent books and had opened bookshops in many cities.
B:What I’m curious about is 　　　　　　　　　　　　　　　　　　　　. 
3.A:The compass is a special invention of ancient China,dating back to as early as the Warring States Period.
B:Yes.It seems 　　　　　　　　　　　　　　　　　　　　　　　　　. 
4.A:Gunpowder was originally used for making fireworks.
B:But what surprises me is 　　　　　　　　　　　　　　　　　　　　. 
5.A:High-speed trains,mobile payments,the bike-sharing system,and online shopping are considered by some as the new “four inventions” of China.
B:Is that so? I feel/It seems 　　　　　　　　　　　　　　　　　　　. 
Suggested answers:
1.which one is the greatest invention/how these inventions have changed China and the world
2.who invented paper/how people made the first paper/when ink was invented/what paper was made from/when and how printing spread to the rest of the world/how records were kept before the invention of paper
3.that the compass was particularly useful/as if people had to depend on the positions of the sun,the moon,and so on when they were at sea before the compass was invented/that ancient Chinese had developed a good knowledge of magnetism
4.that gunpowder was not used initially for firearms/how it is so unexpectedly used today/how heavily mining depends upon it/that it has been generally used not only in industries but in wars across the world
5.that these inventions have really made our lives easier/that every Chinese is proud of the new “four inventions”/as if I could not live without them,especially when it comes to online shopping/that we all benefit from all these things/that we may have to remember that every coin has two sides
StepⅤconsolidation
Ⅰ.Fill in the blanks with guiding words.
1.Look at the tallest building.That is 　　　　　my father works. 
2.One of the most exciting moments in my life was 　　　　　I won first place in the singing competition. 
3.Now,the only problem is 　　　　　we can collect enough money for the project. 
4.One advantage of solar energy is 　　　　　it will never run out. 
5.What is troubling me is 　　　　　I don’t have much experience of this kind of work. 
6.That’s 　　　　　you are wrong.You forgot Step Three. 
Ⅱ.Choose the best answer.
1.Without his support,we couldn’t be 　　　　we are now. 　　　　　　　　　　　　
A.how B.when C.where D.why
2.This is 　　　　my father has taught me—to always face difficulties and hope for the best. 
A.how B.which C.that D.what
3.By boat is the only way to get here,which is 　　　　we arrived. 
A.where B.when C.why D.how
Suggested answers:
Ⅰ 1.where　2.when　3.whether/how/when　4.that　5.that　6.where/why
Ⅱ 1.C　2.D　3.D