Unit 5 Discovering useful structures -ppt课件- (2)-（2022）新人教版(2019新版)高中英语必修第三册.pptx

1、Unit 5 The Value of MoneyLesson 4 Discovering Useful StructuresLearning objectivesAfter this lesson,you will be able to:1.identify and understand the meanings and functions of some modal verbs(could,can,may,might,ought to,would,must etc.);2.use modal verbs to offer suggestions and express explanatio

2、ns;3.better understand and express feelings and attitudes by analyzing the modal verbs.Read the sentences below and taste the differences between the sentences.Modal verbs can be used to express modality.feelings and attitudes.Read and tasteVersatile Modal VerbsFunctions of modal verbs1.He may/can c

3、ome home.2.You can come home by plane or by train.3.She should apologize for not being at home.4.He must/has to come home immediately.5.He doesnt have to come home.6.He can come home by himself now,since he has fully recovered.7.He had better come home now.8.Could you tell his mother that he will co

4、me home tonight?9.He would rather come home tonight.Modal verbs are used in conjunction with verbs to express their function.Examples:Functions:1.permission 许可许可2.possibility 可能性可能性 3.obligation 责任，义务责任，义务 4.necessity 必要性必要性5.lack of necessity 不必要不必要6.ability 能力能力7.advice 建议建议8.a polite request 委婉的委

5、婉的请求请求9.intention 意意图图Modal verbs can be used to express permission,possibility,obligation,necessity,ability,advice,polite request and intention.Observe and detectRead the following sentences and try to choose what the modal verbs express:1.Since we have finished the book,we can discuss it now.2.You

6、 must do it at once,for the deadline is due.3.Would you please pass me the salt?4.You neednt have stayed.5.You ought to help him.6.I would rather do it myself.permission许可 possibility可能性 obligation责任，义务 necessity必要性 ability能力 advice建议 polite request委婉的请求 intention意图possibility/abilityObligation/stro

7、ng advicepolite requestnecessityadviceintentionApplicationVersatile Modal Verbs Henry Adams is stuck in a foreign country without money and friends,and with nowhere to stay.In case it happens to you on a trip abroad,what should you do?Situation 1:Read the passage on page 54 and fill in the blanks wi

8、th suitable modal verbs in the box.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.While this situation _seem unusual,it can sometimes happen to travellers.In case

9、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 think clearly.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 _

10、 offer help to travellers in need.Fourth,you _ avoid getting into trouble.You _ think that stealing some money or food would help you,but you should not do so.Getting caught _ ruin your life.mayshouldmustcanought towouldmighthad bettermightwouldRead the passage again and answer some questions.1.How

11、many tips are there?What are they?Four tips are given:First,and most importantly,you must stay calm.Second,you should go to your nearest consulate.Third,you would do well to check with some local charities.Fourth,you had better avoid getting into trouble.Giving advice:must;should;would do well to do

12、;had better2.Whats the authors reason for each tip?First,fear can cause you to become confused.Second,the consulate ought to be able to help to some extent.Third,the charities might offer help to travelers in need.Fourth,you might think that stealing some money or food would help you,but you should

13、not do so.Getting caught would ruin your life.Showing possibility:can would mightRead the passage again and answer some questions.Negative Advice:stronger weaker You must not say things like that.You shouldnt say things like that.You ought not to say things like that.You dont have/need to say things

14、 like that.You had better not say things like that.You cannot say things like that.154632Different modal verbs can be used to express different levels of intensity and politeness in offering advice.Degree of possibility:high low It may rain tomorrow.It should rain tomorrow.It will rain tomorrow.It c

15、ould/might rain tomorrow.3214Different modal verbs can be used to express different degrees of possibility.Offering suggestions and giving explanations:1.c;2.f;3.d;4.a;5.g;6.e;7.b.ConsolidateVersatile Modal Verbs1.Offering suggestions and giving explanations;Versatile Modal Verbs The two rich brothe

16、rs invited Henry Adams into their house.They decided to make a bet on Henry Adams.Why do you think the brothers chose Henry for their bet?Why did Henry Adams accept the envelope with money in it?Situation 2:Read the sentences below and think.What are the functions and meanings of these modal verbs?w

17、e ask what youre doing in this country and what your plans are?I say that I have any plans.a polite requesta possibilityYou mustnt worry about that.Could you offer me work here?Read the sentences below and think about:What are the functions and meanings of these modal verbs?a necessity/an obligation

18、a polite requestRead and detectFind more modal verbs from Act 1 Scene 3 and discuss their functions.possibilityrequestFind more modal verbs from Act 1 Scene 3 and discuss their functions.possibilitynecessity/obligationnegative adviceRead and detectModal verbs can be used to detect the characteristic

19、s of the speaker.Detect the changes of attitude by analyzing modal verbs.ConsolidateBefore the million-pound note is taken outAfter the million-pound note is taken outAfter the million-pound note is taken outpossibilitya simple future modalstrong advicepossibilitypossibilityabilityVersatile Modal Ve

20、rbs1.Offering suggestions and giving explanations;2.Portraying and analyzing characters;Versatile Modal Verbs Discuss the scene from The Million Pound Bank Note on page 52 and share your understanding of the story.Use modal verbs when necessary.Situation 3:SAMPLE:In my opinion,Roderick and Oliver sh

21、ouldnt be making a bet on Henry.Although Henry might get into trouble without the money,they could instead offer him a job.In this case,that would be a different story.Versatile Modal Verbs1.Offering suggestions and giving explanations;2.Portraying and analyzing characters;3.Expressing opinions;Func

22、tions of modal verbs1.He may/can come home.2.You can come home by plane or by train.3.She should apologize for not being at home.4.He must/has to come home immediately.5.He doesnt have to come home.6.He can come home by himself now,since he has fully recovered.7.He had better come home now.8.Could y

23、ou tell his mother that he will come home tonight?9.He would rather come home tonight.Modal verbs are used in conjunction with verbs to express their function.Examples:Functions:1.permission 许可许可2.possibility 可能性可能性 3.obligation 责任，义务责任，义务 4.necessity 必要性必要性5.lack of necessity 不必要不必要6.ability 能力能力7.

24、advice 建议建议8.a polite request 委婉的委婉的请求请求9.intention 意意图图SummaryApply and practiseFill in the blanks with suitable modal verbs on page 87 to explain these proverbs.1.One good turn deserves（值得）（值得）another.If someone does something nice for you,you _ do something nice in return.2.Hope for the best,but

25、prepare for the worst.Bad things might happen,so you _ be prepared.3.Theres no such thing as a free lunch.Things that are offered for free _ have a hidden cost.should/ought togive adviceshould/ought to/had bettergive advicemay/mightexpress possibilityApply and practiseFill in the blanks with suitabl

26、e modal verbs to explain these proverbs.4.God helps those who help themselves.You _(not)just wait for good things to happen to you.Work hard to achieve your goals.5.Beggars cant be choosers.If you are asking for something from others,you _ take whatever they give you.mustnt/shouldnt/ought not togive negative advicehave toshow necessityThink of a situation where the above proverbs can be used in the play.Homework1.Please finish Exercise 4 on page 87 in your workbook.2.Preview Act 2,Scene 1 on P56-57 and try to figure out the feelings and attitudes by analyzing the modal verbs.