Unit 5 The Value of Money Discovering Useful Structures （ppt课件） -2024新人教版（2019）《高中英语》必修第三册.pptx

1、Unit 5 The Value of MoneyDiscovering Useful Structures P54 第四步第四步:套用强调句结构套用强调句结构It is/was+被强调部分被强调部分+who/that+其他其他第一步：在原句中划出句子成分第一步：在原句中划出句子成分。第二步：看问题句里面需要强调的部分第二步：看问题句里面需要强调的部分第三步：判断被强调部分是人或物，第三步：判断被强调部分是人或物，人用人用who或或that,物用物用that强调句做题步骤强调句做题步骤Neil who/thatyour brother who/thatin the school library

2、 thatthis afternoon that一、复习：情态动词有哪些？一、复习：情态动词有哪些？can、may、should、must、need、would、should、have to 情态动词没有人称和数的变化情态动词没有人称和数的变化，即不随主语的不同而变化。，即不随主语的不同而变化。情态动词不能独立使用，须后接动词原形，一起构成谓语动词。情态动词不能独立使用，须后接动词原形，一起构成谓语动词。二、情态动词的特点二、情态动词的特点A.necessityB.possibilityC.obligation D.request E.advice F.intention三、情态动词的功能三、

3、情态动词的功能需要需要可能或推测可能或推测职责职责/义务义务请求请求建议建议意图和愿望意图和愿望Modal verbspossibilitynecessityobligationrequestadviceintentioncan(could更委婉)may(might更委婉)needhave to(主观）/must（客观）must/ought towouldmayshould/ought tohad betterwouldmustcan可能性可能性必要性必要性义务义务请求请求建议建议意图意图ExampleNecessity Possibilities Obligation Request Adv

4、ice IntentionWe can discuss it now.You must do it at once.Would you please pass me the salt?盐You neednt have stayed.You ought to help him.I would rather do it myself.You have to read between the lines because the real messages are often hiddenIt may seem lucky to you.Astronauts must wear spacesuits

5、when they work in space because May we ask what youre doing in this country?You should/ought to/had better go to class right away.What would you do if you were in her situation?necessity 表必表必要性要性possibility 表表可可能和推测能和推测obligation 表义务性表义务性request 表请求表请求advice 表建议表建议intention 表意图和愿望表意图和愿望A.necessity B

6、.possibility C.obligation D.request E.advice F.intention言外之意言外之意四、情态动词的用法四、情态动词的用法（一）can和could否定式can not(cant)could not(couldnt)1.表示能力表示能力。could是can的过去式，表示过去的能力。现在你们会说英语，但十年前你们还不会。eg:You can speak English now,but you couldnt ten years ago.2.表示可能性表示可能性。“主观推测“的可能性用于否定句或疑问句中；“客观上”的可能性用于肯定句。could表示推测的可能

7、性比can小。任何人在生活中都可能会犯错。eg:Anybody can make mistakes in his or her life.（客观上的可能性）Tom不可能在教室，我刚才看见他在打篮球。eg:Tom cant be in the classroom,I saw him playing basketball.(主观推测）3.表示请求或者许可表示请求或者许可。could比can的语气更加委婉。-明天上午我能用一下你的自行车吗？-是的，你可以。eg:-Could/Can I use your bike tomorrow morning?-Yes you can.could提问时提问时回答

8、用回答用can（二）may和might否定式may notmight not1.表示请求或许可表示请求或许可。might表示请求时语气更加委婉。用于一般疑问句肯定回答用may/can否定回答用may not/cant/mustnt-我可以进来吗？-是的，你可以（不，你不可以）eg:-May I come in?-Yes,you can/may.(No,you mustnt/may not/cant)2.表示可能性。表示可能性。可用“may/might+动词原形”指现在或将来可能的情况。might表示推测的可能性比may更小。他可能知道考试的成绩（大概率知道）。eg：He may know th

9、e result of the exam.Tips:can多用于多用于疑问句疑问句和和否定句否定句，can not表示表示“不可能不可能”He cantt know the secret.他不可能不可能知道那个秘密。may用于用于肯定句肯定句、否定句否定句均可。均可。He may not know the secret.他可能不可能不知道这个秘密。（三）must和have to1.must表示义务表示义务，命令等命令等，意为“必须”，否定式must not/mustnt,表示“不许，禁止”。用于一般疑问句肯定回答用must否定回答用neednt/dont have to你们不允许在这里吸烟eg

10、:You musnt smoke here.eg：-Must we finish the work today?-Yes,you must.(No,you neednt/dont have to)-我们今天必须完成这项工作吗？-是的，你们必须。（不，你们不必）2.must表示推测，表示推测，意为“一定，肯定”，只能用在肯定句中。eg:You must be sleepy after getting up so early.起的那么早，你们一定困了。3.have to表示表示“必须，不得不必须，不得不”，与must在这个意义上很接近，但must强调说话人的主观看法主观看法，而have to强调客

11、观需要客观需要。must只有一种形式，而have to有更多的时态形式。eg:I have to change my idea.我不得不改变我的想法。（四）shall和should否定式shall notshould not(shouldnt)1.shall用于第一和第三人称疑问句中用于第一和第三人称疑问句中，表示说话人征求对方的意见 或向对方请示。eg：Shall the boy wait outside or come in?让那个男孩在外面等着还是进来？2.shall用于第二人称和第三人称陈述句第二人称和第三人称陈述句中，表示说话人的命令、警告、许诺或威胁等。3.should表示义务（应

12、该）、劝告、命令、建议等。与ought to同义，在疑问句中，通常用should代替ought to。eg:We should finish our homework on time.我们应该能按时完成家庭作业。4.should表示说话人根据一定的情况作出推测，意为“应该会”。明天应该是个好天气。eg:It should be a nice day tomorrow.(五)will和would1.表示请求，建议表示请求，建议。would比will更加委婉，客气。请你打开门好吗？eg:Will/Would you please open the door?2.表示意志，愿望和决心表示意志，愿望和

13、决心。would用于过去的情况。我再也不会做那样的事了。eg:I will never do that again.3.表示某种倾向或习惯性动作表示某种倾向或习惯性动作。will表示一般的习惯或倾向，would表示 过去的习惯性动作。下课后他们会去打篮球。(表示过去的习惯性动作）eg:After class they would play basketball.下课后他们会去打篮球。（表示一般的习惯）eg:After class they will play basketball.could have done 本可以本可以不可能不可能1.You _(have)a better grade i

14、f you made full preparation for the exam.2.I saw him just now,so he _(go)abroad.could have had couldnt been gone couldnt have done五、情态动词+have done:对过去的猜测 should have done 本该做某事（而实际上未做）本该做某事（而实际上未做）shouldnt have done 本不该做某事（而实际上做了）本不该做某事（而实际上做了）你本该寻求帮助的。eg:You should have asked for some help.你本不该告诉她这

15、个消息的。eg:You shouldnt have told her the news.must have done 一定做了一定做了cant have done 肯定没做肯定没做I didnt hear the phone.I _(我刚才没有听到电话，我想必是睡着了。我刚才没有听到电话，我想必是睡着了。)must have been asleep She _,for her bike is still here.(她肯定没离开学校，因为她的自行车还在这里。她肯定没离开学校，因为她的自行车还在这里。)cant have left school II.The past future tense

16、过去将来时过去将来时一、过去将来时的基本用法一、过去将来时的基本用法（1）表示从过去某一时间将要发生的动作或存在的状态。常用在主句谓语动词为过去 时态的宾语从句中。二、过去将来时的结构二、过去将来时的结构1.基本表达方式 would+动词原形（以动词do为例）他说他假期将要去北京。他说他假期将要去北京。eg:He said he would go to Beijing for the holiday.（2）常可表示过去习惯性的动作（无论什么人称都用would）他一有时间就打篮球他一有时间就打篮球。eg:Whenever he had time,he would play basketball.

17、eg:He felt that he would pass yesterdays exam.他觉得他将会通过昨天的考试他觉得他将会通过昨天的考试。2.was/were going to+动词原形 表示准备，计划做某事eg:She told me she was going to watch TV.*与would+动词原形相比，was/were going to+动词原形有打算、计划的含义。3.was/were about to do 表示过去曾计划或安排要做某事eg:We were about to go there when it begin to rain.过去将来时的其他几种表达方式（以

18、动词过去将来时的其他几种表达方式（以动词do为例）为例）Read the passage and fill in the blanks with suitable modal verbs in the box.(P54E2)may must can ought to might had better would shouldIn the film The Million Pound Bank Note,Henry Adams is stuck in a foreign country without money and friends,and with nowhere to stay.Whil

19、e this situation _ seem unusual,it can sometimes happen to travellers.In case it happens to you on a trip abroad,what _ you do?First,and most importantly,you _stay calm.Fear _ cause you to become confused.You need to thinkmayshouldmustcanRead the passage and fill in the blanks with suitable modal ve

20、rbs in the box.may must can ought to might had better would shouldclearly.Second,you should go to your nearest consulate.They _ be able to help to some extent.Third,you _ do well to check with some local charities.They _offer help to travellers in need.Fourth,you _avoid getting into trouble.You _ th

21、ink that stealing some money or food would help you,but you should not do so.Getting caught _ ruin your life.ought towouldmighthad bettermightwouldComplete the following sentences that describe the future using either form of the given verbs.1.Philip bought two tickets for The Phantom of the Opera.H

22、e _ _(watch)with his girlfriend on the weekend.2.I was so surprised at the news that David _ (play)the role of the dinosaur in the play that I gave him a hug out of joy.3.Lily decided that she _(settle)in New York and pursue her dream of becoming an actress.4.Hey,Timmy.I _(call)you.But now that you

23、are here,I dont have to.5.The competition was so close that no one was sure who _ (win)the Best Actor award6.Jim is not here right now.He said he _(be)on duty at the library this afternoon.would watch/was going to watchwould play/was going to play would settle/was going to settlewas going to callwou

24、ld winwould be/was going to bewould表示意愿，指愿意做表示意愿，指愿意做be going to 表示按计划打算做表示按计划打算做Read about a bet between two wealthy men (P53)Complete the passage with words from Act 1,Scene 3.The two gentlemen had been having a heated argument for a couple of days,and had decided to make a _ which would settle th

25、eir argument.They were going to find someone to take part in their bet when they saw Henry walking on the street outside.They invited him into their house,where Henry told them he had landed in Britain by _ Although he had gone to the American consulate to _ help,he had not received any.Henry hoped

26、that the brothers would offer him some _ of work because he had no money.Henry got upset with the brothers when they seemed too happy about his bad luck.They quickly told him not to feel that way and they gave him an envelope with money in it.They said the letter inside would explain what it was all about,but he had to postpone opening it until 2 oclock.Henry felt that was odd.The _ ended with Henry leaving their house and promising that he would not open the letter until 2 oclock.betseeksortaccidentscene