Unit 1 Learning about language （ppt课件）-2022新人教版（2019）《高中英语》选择性必修第二册.pptx

1、To practice the vocabulary.To learn to use predicative clauses.To make sentences using predicative clauses.Find the words from the previous pages with the following prefixes or suffixes.Then add two more words for each prefix or suffix,and explain their meanings.PrefixWordsPrefixWordsre-micro-dis-tr

2、ans-reunite,revise,recover,react,recalldiscover,disappear,dislike,disablemicroscope,microwave,microphonetransform,transport,transplant前缀前缀释义释义单词单词re-reviewreturndis-disagree micro-microscopetrans-transporttransnationalagainbacknotsmallchangeacross,over,beyondSuffixWordsSuffixWords-ory-ial-ion-ology

3、contradictory,advisory,compulsoryinfection,contribution,extinction,reaction,congratulation,collectionsubstantial,official,financial,commercialepidemiology,physiology,biology后缀后缀释义释义单词单词-orysensory-ioncollection-ialbeneficial-ologysociologyof or relating toaction or processhaving the characteristics

4、of a branch of knowledge 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

5、the road.subscribe suspect blame link subscribe toblame forto of for3.The man _ being behind the robbery was seen crossing the street.4.Since heart disease is often _ our lifestyle choices,we need to make healthy living an important part of our lives.suspected oflinked tosubscribe suspect blame link

6、 to of for1.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.Im sure shell deal with the changes very well because shes very adaptable.Replace the underlined parts with suitable words from the box.a household namehandleraw,

7、a household name,substantial,statistics,handle3.He was ready to serve dinner to his friends when he realised 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 coll

8、ected more data than expected to prove the theory.rawsubstantialstatisticsraw,a household name,substantial,statistics,handleUK scientists believe they may have found a way to fight the common cold.It blocks a key protein in the bodys cells that is to _ for the spread of cold-causing virus.Read this

9、passage about medical science.Complete it using the words below.blameinfection,multiple,decrease,severe,transform,proof,blame,substantialTargeting 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,

10、they also _ rapidly,meaning they can quickly develop resistance to medicine.Researchers are working on making a forminfectionmultipletransforminfection,multiple,decrease,severe,transform,proof,blame,substantialof medicine that can be taken directly into ones lungs,to _ the chance of side effects.Tho

11、ugh these scientists have made _ advances in their research,further _ is needed to make sure such drugs are not so _ that they harm the body.decreasesubstantialproofsevereinfection,multiple,decrease,severe,transform,proof,blame,substantialThe truth was that the water from the Broad Street pump had b

12、een infected by waste.predicative clause Underline all the examples in the reading passage where noun clauses are used as the predicative.Then state their meaning and functions.One theory was that bad air caused the disease.Another was that cholera was caused by an infection from germs in food or wa

13、ter.It seemed that the woman 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.在复合句中作表语的从句叫做表语从句。在复合句中作表语的从句叫做表语从句。位于主位于主句的系动词之后，对主语进行解释、说明，使主句的系动词之后，对主语进行解释、说明，使主语的内容具体化。语的内容具体化。表

14、语表语从句必须从句必须用陈述语序。用陈述语序。e.g.The question is who broke the vase.My suggestion is that we(should)start early tomorrow.连系动词连系动词状态类状态类:be动词动词,seem,appear,keep,remain,stay 变化类变化类:become,get,turn,grow,fall,come,go 感官类感官类:look,smell,taste,sound,feel 表语表语从句的引导词从句的引导词连接词连接词连词连词在从句中不作成分在从句中不作成分that,whether,as

15、if,as though,because 连接代词连接代词在从句中作主语、在从句中作主语、宾语、表语、定语宾语、表语、定语what,who,whom,whose,which,whatever,whoever,whichever 连接副词连接副词在从句中作状语在从句中作状语when,where,how,why e.g.The trouble is that I have lost his address.The question is whether they will go by plane or by train.It sounds as if/though someone is knock

16、ing at the door.This is because the weather here is cold and wet.Thats why Tony got angry with me.He has become what he wanted to be ten years ago.The question is how we can find the suitable man for the job.表语从句要点归纳表语从句要点归纳1.表语从句一定要用陈述语序。表语从句一定要用陈述语序。e.g.One advantage of playing the guitar is that

17、it can give you a great deal of pleasure.2.that引导表语从句引导表语从句时时,在在句中只起连接句中只起连接作用作用,不不充当充当句子成分句子成分,无无实际实际意义意义,一般一般不能省略。不能省略。e.g.The trouble is that I have lost his address.3.whether引导表语从句时，起连接作用，意为引导表语从句时，起连接作用，意为“是否，是否，空间，到底空间，到底”，在句中不作任何成分，在句中不作任何成分。if不能引导表语从句。不能引导表语从句。e.g.The question is whether you

18、r uncle will offer help to us.4.连接连接代词代词ho,whom,whose,what,which,whoever,whatever,whichever等等除在句中起连接作用外，在从除在句中起连接作用外，在从句中还充当主语、宾语、表语或定语，本身具有词句中还充当主语、宾语、表语或定语，本身具有词义。义。e.g.My hometown is no longer what it used to be.The problem is who we can get to replace her.5.连接副词连接副词where,when,why,how等除在句中起连接等除在句

19、中起连接作用，在从句中还充当地点、时间、原因、方式作用，在从句中还充当地点、时间、原因、方式状语，本身具有词义。状语，本身具有词义。e.g.The question is when they will start the project.The question is how he did it.6.That is because.指原因或理由；指原因或理由；That is why.则指由于某种原因所造成的后果。则指由于某种原因所造成的后果。e.g.Bruce did not watch the game last night.That was because he had to help h

20、is little sister with her homework.Bob had seen the film before.That was why he did not see it yesterday.7.需使用虚拟语气的表语从句需使用虚拟语气的表语从句 在在advice,suggestion,order,proposal等表示建议、等表示建议、劝告、命令等含义的名词后的表语从句中，谓语动劝告、命令等含义的名词后的表语从句中，谓语动词需用词需用“should+动词原形动词原形”，should可省略。可省略。e.g.My suggestion is that we(should)star

21、t early tomorrow.Answer the following questions using the information from the reading passage as well as the predicative clauses.What was it that John Snow showed to the world?What John Snow showed to the world was how cholera could be overcome.1.What was Snows discovery in two particular streets i

22、n London?Snows discovery in two particular streets in London was that _ _.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 _.the cholera outbreak was so severe that the cholera outbreak had caused over 500 deathsmore th

23、an 500 people died in ten dayswithin ten days3.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 that _ _.all those who died had livedthe pump water carriedcholera germsDavid is talking

24、to Maria about their scientific research project.First complete Davids lines(A-E),using the words in the box.Then put Davids lines in the correct order and practise the conversation.as if,that,what,who,when,how,why,whose,which,whetherA.Absolutely.You may not believe it,but that was _ happened at the

25、 initial stage of our groups research on developing a vaccine 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.whatas ifthatas if,that,what,who,when,how,why,whose,which,whetherC.Exactly.The

26、 problem was not about _ all our theories were equally good,but in deciding _ theory to depend upon.D.We realised 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.Youre right.At last,we became fo

27、cused on the key issue,which was _ we had to carry out the research in the first place.whosewhichhowas if,that,what,who,when,how,why,whose,which,whetherwhywhetherMaria:This mix of theory and data is one of the key characteristics of what we call science.David:Maria:With your theoretical framework?Da

28、vid:Maria:Deciding on a theory is definitely of critical importance.A.Absolutely.You may not believe it,but that was what happened at the initial stage of our groups research on developing a vaccine for malaria.C.Exactly.The problem was not about whether all our theories were equally good,but in dec

29、iding whose theory to depend upon.David:Maria:This was when you should have calmed down and got down to doing some solid work.David:B.Yes,it is.And it seemed as if all the theories were useful,but the fact was that we couldnt persuade one another that one theory was better than another.E.Youre right

30、.At last,we became focused on the key issue,which was why we had to carry out the research in the first place.Maria:So what happened in the end?David:D.We realised 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 withou

31、t reducing its effect!用合适的连接词补全下面的对话。用合适的连接词补全下面的对话。Tom:Hi,Jane.I want to become a scientist.My question is _ scientists work and what I need to do in order to become a scientist.First of all,Id like to know how long I have to study to become a scientist.how Jane:Well,that depends.Usually,a scientis

32、t must have at least a Bachelors degree,so that means about four years in college.Nowadays,most scientists need a Masters degree,too.Tom:My second question is _ courses or major should I choose.what Jane:Again,that depends on what you want to study in the future.You will need to study maths.If you w

33、ant to be a successful scientist,you must understand the basics of physics,chemistry and biology.Tom:Wow,thats a lot.What puzzled me was _ branch of science I should choose?whichJane:Well,I think the best way is _ you should get some practical experience.Visit scientists and laboratories to see what

34、 the life of a scientist is like.Ask scientists to tell you about their work.You should also try to find out which branch of science you like and are good at.Tom:I like physics,but the question is _ my parents will allow me to major in it.that whetherJane:Thats unbelievable.My first advice is _ you

35、should make your own decision.Tom:I think so.Do you have any other advice for me?Jane:Yes.I think a good scientist should be careful,curious and creative and that he or she should like to ask a lot of questions and solve problems.that 1.Review the words,expressions and sentences we have learned.2.Review Grammar.3.Finish the exercises in the workbook.