Unit1 Discover useful structures公开课（ppt课件）-2022新人教版（2019）《高中英语》选择性必修第二册.pptx

1、Discover Useful StructuresBy the end of this period,you will be able to1.Analyze the forms and features of predicative clause.2.Learn the functions of predicative clause in the context.3.Use predicative clause in the given context.Q1:Can you find any predicative clauses?Q2:Why do you think they are

2、predicative clauses?Q3:What are the main linking verbs?In those days,there are 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.

3、One of the evidence is that a woman 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.In those days,there

4、 are 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 of the evidence is that a woman had died of cholera after moving away

5、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.And the truth was that the water from the Broad Street pump had been infected by waste.Linking verbs状态类：状态类：be,seem,appear,keep,remain,stay感官类：感官类：look,smell,taste,sound,feel变化

6、类：变化类：become,get,turn,grow,fall,come,goWhat are the main linking words?ask and answer the questions in pairs using the information from the reading passage(P5 Activity2)1.What was Snows discovery in two particular streets in London?Snows discovery in two particular streets in London was that_ _.2.Wh

7、at was Snow determined to find out during the 1854 outbreak of cholera in London?What Snow was determined to find out was why _ _.3.What were the exact places Snow marked on the map?The exact places Snow marked on the map were where _ _.4.What was the finding that Snow announced?Snows finding was th

8、at _.the cholera outbreak was so severe that more than 500 people died in ten daysof cholera had caused over 500 deaths within ten days.so many people died/the outbreak all those who died had lived/all the dead people had livedthe pump water carried cholera germs/the water pump wasto blame for the s

9、pread of cholera 1.Snows discovery in two particular streets in London was_ the cholera outbreak was so severe that more than 500 people died in ten days.2.What Snow was determined to find out was_ so many people died.3.The exact places Snow marked on the map were _ all those who died had lived.4.Sn

10、ows finding was_ the pump water carried cholera germs.Fill in the blank quickly and answer the questionsWhat are their meanings and functions?thatwhywherethatSummary:Guiding words should be chosen according to their functions and meanings.引导词thatthatwhichwhichwhetherwhetherwhatwhatwhowhoasas if/as i

11、f/as thoughthoughwhywhywhenwhenwherewherehowhow做的成分 含义不做成分定语表语不做成分主语宾语表语定语主语宾语表语不做成分状语状语状语状语无意思哪一个是否什么所的谁好像为什么什么时候在哪里如何怎样 complete Davids lines by filling in guiding words(A-E).A.Absolutely.You may not believe it,but that was _ happened at the initial stage of our groups research on developing a vac

12、cine for malaria.B.Yes,it is.And it seemed _ all the theories were useful,but the fact was _ we couldnt 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 realised that wha

13、t we cared about was not _ aspect we needed to develop a theory in,but rather _ we can reduce the cost of avaccine without reducing its effect!E.Youre right.At last,we became focused on the key issue,which was _ we had to carry out the research in the first place.whatthatwhetherwhose/which/whatwhat/

14、whichhowas ifwhyMaria: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 calm

15、ed down and got down to doing some solid work.David:_ Reason:_ Maria:So what happened in the end?David:_ Reason:_ Put A-E in the correct order using the above methods.Then check the answer and state the reasons.（P5 Activity 3）ACBEDlogiclexisgrammarlogicgrammarQ1:What was Davids groups research?Q2:Wh

16、at was the problem?Q3:What was the key issue?Q4:What did they care about?answer some questions about the dialogue using the predicative clauses.（P5 Activity 3）Davids groups research was that they wanted to develop a vaccine for malaria.The problem was that they had to decide which theory to depend u

17、pon.The key issue was why they had to carry out the research in the first place.What they cared about was how they could reduce the cost of a vaccine without reducing its effect.1.A:Papermaking,printing,gunpowder,and the compass are the four great inventions of ancient China.They are significant con

18、tributions 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 Im curious about is_.3.A:The compass is a special inventio

19、n 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 inventi

20、ons”of China.B:Is that so?I feel/It seems _.which one is the greatest inventionwho invented paper/when ink was inventedthat the compass was particularly usefulthat gunpowder was not used initially for firearmsthat these inventions have really made our lives easier I.Fill in the blanks with guiding w

21、ords.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 trou

22、bling me is_ I dont have much experience of this kind of work.6.Thats_ you are wrong.You forgot Step Three.wherewhen whether/how/whenthatthatwhere/whyII.Choose the best answer.1.Without his support,we couldnt 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.what3.By boat is the only way to get here,which is _ we arrived.A.where B.when C.why D.how CDD Finish Exercise1 P62 on workbook