情態(tài)動詞的教案

1、情態(tài)動詞(Modal Verbs)共6課時Period 1Studying Aims:know more about the Modal Verbs.Create the student s interests of English.Master the usage about can.may.must.need.had better and so on. Studying Important and Difficult Points:Master the usage about can.may.must.need.had better ”Check list before class:Def

2、inition:Studying Procedure:Step1.Lead- in.教師提問：情態(tài)動詞都有哪些？.師生之間相互問候，引出情態(tài)動詞。Step2:Presentation.情態(tài)動詞有 can (could), may (might), must, have to, shall (should, will (would),dare (dared), need (needed), ought t等。情態(tài)動詞無人稱和數(shù)的變化；不能單獨使用，必須與其后的動詞原形構成謂語。二.情態(tài)動詞的用法can用法1)表示能力，與be able to同義，但can只用于現(xiàn)在時和過去時，be able to

3、可用 于各種時態(tài)。Two eyes can see more than one.注：Can you ？ Yes, I can / No, I can t.I ll not bebe to come this afternoon.當表示經(jīng)過努力才得以做成功某事”時應用be able to,不能用Can。如：He was able to go to the party yesterday evening in spite of the heavy rain.表示允許、請求用could比can語氣更加委婉客氣，常用于 could I /you.包型中，若表示同意時，用can回答而不用could.Co

4、uld I borrow the book ? No, you can t.Can I go now?Yes, you can. / No, you can t.此時可與may互換。在疑問句中還可用could,might代替，不是過去式，只是語氣更委婉，不能用于肯定句和答語中。-Could I come to see you tomorrow?Yes, you can. （ No, I m afraid not.）.表示推測 可能（驚訝、懷疑、不相信的態(tài)度），常用于否定句.疑問句和感嘆句中。（can 表示一定不是）Can this be true?This can t be done by h

5、im.How can this be true?It can t be true. Can it be true?4）表示客觀可能性（客觀原因形成的能力）。They ve changed the timetable, so we can go by bus instead.This hall can hold 500 people at least.may用法1）表允許，請求=can表示許可或征求對方的許可，常于第一人稱連用。注： May I .？ Yes, you may. No, you can t / mustn t.用May I. ?征徇對方許可時比較正式和客氣，而用Can I.?在口

6、語中更常見。在回答以may引起的問句時，多避免用這個詞，而用其它方式，如 Yes, please. / Certainly.might比may語氣更委婉，而不是過去式。否定回答時可用can或mustn, t表示不可以，禁止-Might/ May I smoke in this room?-No, you mustn t.-May/Might I take this book out of the room?Yes, you can. （No, you can t / mustn t.）2）表推測，可能、也許。常用于肯定句中。might不是過去式，它所表示的可能性比may小。. He may /

7、might be very busy now.Maybe he knows the news.=He the news.3）用于祈使句，表示祝愿May you succeed!Step3: Do ExercisesStep4:SummaryStep5:Homework Do your exercises.Step6: Self-reflection教學反思：Period 2Studying Aims:l.know more about the Modal Verbs.Create the student s interests of English.Master the usage about

8、can.may.must.need.had better and so on.Studying Important and Difficult Points:Master the usage aboutcan.may.must.need.had better”Check list before class:Definition:Studying Procedure:Stepl.Lead- inStep2:Presentationmust1）表示義務。意為 必須”（主觀意志）。We must do everything step by step.注： Must I .？ Yes, you mus

9、t / No, you needn t （don t have to ）.-Must we hand in our exercise books now?-No, you needn / tNo, you don t have to.mustn 表禁止、不允許。You mustn t talk to her like that.3）表示揣測。意為 想必、準是、一定”等，只用于肯定句。否定、疑問句中must 改為can.He must be ill. He looks so pale.She s wearing a diamond necklace. She must have a lot of

10、 money.注：must表推測時，其反義疑問句與 must后面的動詞一致。There must be something wrong,?need的用法need既可用作情態(tài)動詞，也可用作實義動詞。用作情態(tài)動詞時，主要否定句或疑問句中。用作實義動詞時，可用于各種句式。.用作情態(tài)動詞，用于否定句和疑問句中。. Need I .？ Yes, you must / No, you needn t .Need we finish the work today ? Yes you _?A. need B. can C. may D. must. need + do sth .變否定旬： needn t d

11、o sth變疑問句：Need sb do sth ?.用作實義動詞. need + to do sth . We need(buy) some school things .變否定句: don t /doesn t /didn t +need to do sth .變疑問句：Do / Does /Did sb + need to sth ?Yes , do/ does / di(No, sb don t / doesn t /didn t.You don t need to do it yourself.當主語是物時。Sth + need + doing sth = Sth +need to

12、be done .The table needs painting. =The table needs.had better 的用法. had better + 動詞原形 =It s best to do sth.You had better(stay )at home. =stay at home. Had better not 網(wǎng)詞原形We had better(not play ) the computer games.must, have to1)表示必須、必要。You must come in time.t,在回答引出的問句時，如果是否定的，不能用mustn (禁止，不準)，而用ne

13、edn don t haveto不必).-Must we hand in our exercise books today?Yes, you must.No, you don t have to / you needn t.2) must是說話人的主觀看法，即說話人認為必須干某事。而have to必須，不得不”，則強調(diào)客觀需要，即外界因素迫使某人不得不干某事。(外界原因)。Must只有一般現(xiàn)在時，have to有更多的時態(tài)形式。1. he play isn t interestinglyrmust go now.m afraid you2.I can t stop playing the co

14、mputer gamesor your health, IA. can B. may C. must D. had toStep3: Do ExercisesStep4:SummaryStep5:Homework Do your exercises.Step6: Self-reflection教學反思：Period 3Studying Aims:.know more about the Modal Verbs.Create the student s interests of English.Master the usage about can.may.must.need.had better

15、 and so on.Studying Important and Difficult Points:Master the usage about shall, will , would”Check list before class:Definition:Studying Procedure:Step1.Lead- inStep2:PresentationUsage:shall1）用于第一人稱征求對方的 意見，如：What shall I wear on the journey?我路上穿什么好呢？Shall we dance?我們跳舞好嗎？2）shall用于第二、三人稱時表允諾，警告， 命令

16、，威脅（現(xiàn)已少見），如：She shall get her share.她可以得到她的一份。You shall have it back tomorrow你明天可以將它拿回。should一般不應被認為是情態(tài)動詞shall的過去式，主要用法有：1）用于第一人稱疑問句中詢問對方的意愿，但語氣較委婉溫和，如：What should we do now?我們現(xiàn)在該怎么辦？2）表示應該、必須，常與 must換用。例如We should （must） master a foreign language at least.我們應當至少掌握一門外語?！皊hould+be+語”的結構，表示推測或驚奇。例如:Th

17、ey should be back by now.他們現(xiàn)在應該回來了吧。I am sorry that she should be so careles就感至U遺憾她竟會那樣粗心?！皊hould+have+去分詞”的結構，表示過去該做而實際上尚未做的動作 或行為;其否定則表示發(fā)生了不應該發(fā)生的行為。其同義結構“ought。have +過去分詞”表示過去 早應該“、本當”之意，語氣較強。例如：I should have thought of that.這一點我是應當想到的。（但沒想到）They should not have left so soonftfc們不應當走得這么早。（但已走了）5）在

18、 “It is natural （strange, natural, necessary, surprised, impossible, important ） that 句型中，主語從句中的謂語動詞要用should +動詞原形”表示 理所當然“、奇怪“、必要“、驚異”等的意思。在lest（以免）、for fear （that） （以防）、in case（以備萬一）等之后也要用should+動詞原形；在advise, sugest, order, demand, request等的從句中 should+do 例如：It is necessary that he（should） be sent

19、there at once.有必要馬上派他到那里去。It is strange that he should say so他會說這樣的話真是奇怪。Let us go at once lest we should be late for the train.我們馬上走吧，以免趕不 上火車。will和would的用法1）表示意志，決心或愿望。例如：Surely we will support all the people in the world in their struggle for peace.我們一定要支持全世界人民爭取和平的斗爭。He would not let me try it .

20、他不肯讓我去試。2）will表示經(jīng)常性、習慣性、傾向性，would表示過去的習慣行為。He will sit there hour after hour looking at the traffic go by.他會經(jīng)常一連幾個小時坐在那兒觀看來往的車輛。He would come to see me when he was in Beijing.他在北京時，常來看望我。3）用于第二人稱作主語的疑問句中，表示對對方的請求，would的語氣比will委碗Would/will you kindly tell me the way to the station?請問到火車站怎么走？4）表可能性Thi

21、s will be the book you are looking for.He would come to see me when he was in Beijing.他在北京時，常來看望我。Step3: Do ExercisesStep4:SummaryStep5:HomeworkDo your exercises.Step6: Self-reflection教學反思：Period 4Studying Aims:.know more about the Modal Verbs.Create the student s interests of English.Master the usa

22、ge about can.may.must.need.had better and so on.Studying Important and Difficult Points:Master the usage about shall, will , would”Check list before class:Definition:Studying Procedure:Step1.Lead- inStep2:PresentationUsage:情態(tài)動詞后跟完成式和進行式的用法.情態(tài)動詞后跟完成式，表 原本應該干某事，而實際上沒干”I should have finished the work e

23、arlier.He isn etre. He must have missed the train.情態(tài)動詞后跟進行式，(即情態(tài)動詞+ be + v-ing形式)表示 想必正在”， 可能正在”，應當正在”，表示推測或評論某動作現(xiàn)在是否正在進行 等意。It s twelve o clock. They must be having lunch.They may be discussing this problem.He can t be telling the truth.He must be playing basketball in the room.She may be staying a

24、t home.used to +v, be used to +v-in球口 be used to +v(1)used to +v意為 過去常常”，過去一直；be used to +ing / n(名詞)意為習慣于 ；be used to + 意為 被用來(做某事)”。(2)used to只表示過去，而 be used to +v-ing / n可表示現(xiàn)在、過去或將來。例如：1)He used to smoke. Now he doesn t.2)He s quite used to hard work / working hard.3)The knife is used to cut brea

25、d.表推測的情態(tài)動詞句子的反意疑問句He must/may be in the room, isn t he?He can t be in the room, is he?He must have finished the work, hasn t he?He may have done the work last night, didn t he?三.情態(tài)動詞的同義轉換.can = be able tomust = have toneedn t = don t have toneed do sth = need to do sth .情態(tài)動詞語法講解：用作情態(tài)動詞的其他語would rath

26、er, would sooner, would (just) as soon, had rather, had better, had sooner, can not but, may (just) as wel等可用作情態(tài)動詞。例如：1)The soldier would sooner die than surrender.2)The brave soldier would as soon die as yield to such an enemy.3)I d rather walk than take a bus.4)If you don t like to swim, you mastj

27、as well stay at home.注：這些短語后一般直接跟動詞原形.would (had) rather, would (had) sooner, would (just) as soon后可跟that引導的從句，that常省去，從句要用虛擬語氣。 對現(xiàn)在和將來的假設用過去時，對過去的假設用過去完成時。例如：1)I would rather you came on Sunday.2)I would sooner you hadn t asked me to spsrdayy.esStep3: Do ExercisesStep4:SummaryStep5:HomeworkDo your

28、exercises.Step6: Self-reflection教學反思：Period 5Exercises:情態(tài)動詞語法練習題May I stop my car here?No, you.A. cant B. mustnt C. neednt D. dont have toMust we clean the house now?No, you .A. neednt B. may not C. mustnt D. cantJohn his father about his failure in the exam.A. dares not tell B. dares not tellingC.

29、dare not tell D. dares not to tellYou return the book now. You can keep it next week if you like.A. cant B. mustnt C. neednt D. may notJohnny, you play with the knife, you hurt yourself.A. wont.cant B. mustnt.mayC. shouldnt, must D. cant.shouldntThe fire spread through the hotel very quickly but eve

30、ryone get out.A. had to B. would C. could D. was able toWould you go out for a walk with me?No, I . My girl friend is coming.A. wouldnt B. shall not C. wont D. shouldntMan die without water.A. will B. can C. need D. shallIf he started at 9 0clock, he be there by now.A. need B. shall C. ought to D. m

31、ustI mailed the letter two weeks ago. Sheit.A. must receive B. cant receive C. might receive D. must have received 11.The professor gave orders that the experiment before 5:30p.m.A. be finished B. will finishC. must be finished D. would be finishedThere was plenty of time. You.A. mustnt hurry B. mus

32、tnt have hurriedC. neednt hurry D. neednt have hurriedTom was a diligent boy. He go to school though it was raining hard.was able to B. could C. couldnt D. wasnt able toI go back before lunch?No, I dont think you.A. Need.must B. Do.need to C. Must.have to D. May ought toThe teacher do all the exerci

33、ses, but a pupil.A. needntmust B. may not.mustC. needntneednt D. cantmustWould you open the window please ?Yes, I.A. will B. would C. do D. canA lion only attacks a human being when it is hungry.A. should B. can C. will D. shallMust I finish this novel this morning ?No, you.A. mustnt B. might not C.

34、 dont have to D. cantThe taxi only hold six passengers. It is full. You take the next one.A. may.may B. can.may C. may.can D. must.canI a little earlier, but I met a friend of mine on the way.A. may come B. may have come C. could have come D. must have comeI wish to go home now,I?A. may B. cant C. m

35、ust D. do答案：1-10 BACCB DCADD11-20 ADACA ACCBCPeriod 6Exercises:-May I sit beside you, sir?- No, you . My girlfriend is coming soon.can tB. may notC. needn tD. shouldn t- I speak to Mary, please?-Sorry, shecome to the phone because she isn t in.A. Might; won Bt. Can t; mustn tC. May; can t D. Couldn

36、t; shouldn t- I want to know if I _ smoke here.- No, you. Could you see the sign“ NO SMOKIN” G there?can; needn t B. must; can tC. shall; won t D. may; mustn tMy wife never remembers my telephone number. She always look it up.A. mustB. shouldC. wouldD. has to- you pass me the English magazine, pleas

37、e?- Sure. Here you are.Could B. Need C. Must D. Might-Must I go to work with you?- No, you. Linda go with me.A. mustn t; can B. can t; has toC. daren t; shouldD. needn t; may- _ I tell Mary the test results?- No, you. She s already got the score.A. Will; won t B. Shall; needn tC. May; mustn tD. Can;

38、 don tt working.t very sure yet.You be careful when crossing here. The traffic lights arenA. mightB. ought toC. couldD. may-Could I borrow your bicycle?- Yes, of course you.will B. should C. canD. needJoancome with us this afternoon, but she isnA. can B. may C. must D. willI ask you the question bec

39、ause I think I be wrong.daren t; must B. mustn t; canC. needn t; may D. can t; shouldIt s nearly eight o clock. Mike be here at any moment.A. needB. has toC. shouldD. canThe fire spread through the building very quickly but everyone get out.A. had toB. wouldC. couldD. was able to-What do you think o

40、f this answer?-I don t think it be right.shouldB. mightC. mustD. can- Is John coming by train?- He should, but he _. He likes driving his car.A. can tB. needn tC. may notD. mustn tHe doesn t have to work tomorrow, but you have og,o_t _t_ you?A. don tB. haven tC. haven t got D. can tYouwake me up whe

41、n I fall asleep, you?haven t better; havewould not rather; wouldhad better not; shouldhad not better; must情態(tài)動詞情態(tài)動詞有can (could), may (might), must, have to, shall (should, will (would), dare (dared), need (needed), ought t o 等。 情態(tài)動詞無人稱和數(shù)的變化；不能單獨使用，必須與其后的動詞原形構成謂語。一、情態(tài)動詞的基本句型肯定句： 主語 +情態(tài)動詞+動詞原形 +You can

42、 sleep here.否定何：主語+情態(tài)動詞+not+動詞原形+You can t sleep here.疑問句： 情態(tài)動詞+主語 +動詞原形+Can I sleep here.二、情態(tài)動詞的意義must “必須” ;can/could 能，會” ;may/might “可以” ;should “應該” ;would “愿，要” ;have to “不得不” ；need “需要”can 表示能力，意為 能 會， 表示推測， 意為 可能， 常用于否定句和疑問句中 表示請求， 允許， 意為可以could是can的過去式，意為一能、會， 表示過去的能力 在疑問句中表示委婉請求may表示請求、許可，

43、意為一可以 表示推測，常用于肯定句中，意為一可能、也許might是may的過去式，表推測，常用于肯定句中，意為一 可能、也許must表示主觀看法，意為一必須、應該，表有把握的推測，用語肯定句表示需要、必須，主要用于否定句和疑問句中dare 表示敢于，主要用于否定句和疑問句中should 意為 應該， 表示要求和命令表示勸告、建議had better意為一最好，表示建議used to意為一過去常常，表示過去的動作、行為 考點一情態(tài)動詞知識清單情態(tài)動詞有具體的詞義， 但也同助動詞一樣， 需要與其他詞語一起構成句子的謂語， 另外情態(tài)動詞沒喲人稱和數(shù)的變化，情態(tài)動詞后必須跟動詞原形。三、情態(tài)動詞的基本

44、用法1. can的用法(1)表示能力、許可、可能性。表示能力時一般譯為一能、會， 即有種能力，尤其是生來具備的能力 .( 2) 表示可能、能夠。 如： I can finish it in an hour.（ 3 ）表示許可，常在口語中。如： You can use my dictionary.（4） cant可譯為一不會，如：I cant play basketball.我不會打籃球。當句子表推測時，用can t 表達不可能，He can t be ill. He is playing chess with Tom.Cant 還可用來回答一 May I ？這樣的問句。May I come i

45、n ? No, you mustnt / can t. can t 還可用于固定習語中。She can t help crying.could 的用法（ 1 ） can 的過去式， 意為 能、 會， 表示過去的能力。（ 2 ） could 在疑問句中， 表示委婉的語氣，此時沒有過去式的意思。Could he be a good student?may 的用法（ 1 ）表示請求、許可， 比 can 正式，（2）表示推測，談論可能性，意為一 可能，或許，一般用于肯定句中。may 的過去式為 might ，表示推測時。可能性低于 may 。（ 4）對may 引出的問句，可以有下列回答方式： Yes,

46、 of course. Yes, certainly. Sure. No, youmustn tN. o, you can t.may 的否定式為 may not ， 譯成 可能不， He may not be at home.must 的用法must表示主觀看法，意為一必須、一定。（2）其否定形式mustnt 表示 一定不要 、千萬別、 禁止 , 不許 .Mustn t也可用于以 may表示要求時的否定回答中。May I stand here? No, you mustnt（cant）.（3）對 must 引出的疑問句，回答為：Yes,must. No,neednt/ don t have

47、to.must 表示有把握的推測，用于肯定句。當 must 表示 肯定的判斷、推測時，其反意疑問句要用實際問句的助動詞來構成。 She must have finished writing, hasn t she?need的用法（ 1 ） need 表示需要、必須，主要用于否定句和疑問句中，其否定形式為 needn t ，意為沒有 必要，不必。用need提問時，肯定回答為 must,否定回答為needn t。如： Need I stay here any longer? Yes, you must .No. you neednt .needn t + have+動詞的過去分詞，表不需要完成但已

48、完成的動作，暗含時間或精力上的浪 費。You needn t have bought it.need還可以作實義動詞，此時有人稱、數(shù)和時態(tài)的變化，后邊多接動詞不定式。dare 的用法dare意為一敢、敢于II ,用法近似于need,有兩種詞性：（ 1 ） dare 作為情態(tài)動詞，多用于否定句、疑問句或條件句中，無第三人稱單數(shù)形式，只有一般現(xiàn)在時和一般過去時。dare作為實義動詞，此時有人稱、數(shù)及時態(tài)的變化。注意： 在口語中，dare的各種形式常與 不帶 to 的不定式連用。 Do you dare tell her what I said?shall的用法shall表示征求對方意見（多用于第一

49、、三人稱）， Shall we go out for a walk?shall 引出的疑問句用于第一人稱， 表示征求對方意見或客氣的請求。其回答方式有以下幾種：Yes, please. All right. No, thank you.( 2 )表示決心、警告、命令( 多用于第二、三人稱)， No one shall bring your beepers or mobile phones in the exam.should 的用法should意為一應該II ,可表示勸告、建議、義務、責任等。We should protect the environment.should (would)lik

50、e to do sth.表示一想要、愿意做某事II ,常用于口語中。Would you like to go with me? 你想和我一起去嗎？Should have done表示對過去動作的責備、批評。 You should have finished your homework.(4)表否定時是shouldn t 表不應該 You shouldnt feel so unhappy over such little things.will 的用法will 表示意愿、意志、打算，可用于多種人稱。 I will help you if I m free this afternoon.would

51、 是 will 的過去式，語氣更加客氣、委婉。Would you show me your picture book? Will you please give me a call?(3)對will/ would you 的回答方式有以下幾種：Yes, I will. (No, I won t.)Sure . (Im sorry , I can t.)All right.Certainly. (No, thank you .) Yes, please.had better 的用法had better意為一最好II ,沒有人稱的變化，后面接不帶to的不定式，其否定形式為： had better

52、not 。 We had better go now. You had better not give the book to him.情態(tài)動詞練習It s the library! So youknow shouting is not allowed here.A. can B. must C. need D. may-I download the article again？ -No， you neednt.A. Shall B. Will C. Must D. Can-May I have a word with you？ -No， you . Im busy today.A. need

53、nt B. wouldnt C. dont have toD. cant-I have your English nam，e please？-Yes， Helen. H-E-L-E-N.A. Must B. May C. Will D. Need-Who is the boy over there？ Is it John？ -No， it be him. John is much taller.A. mustnt B. may not C. cant D. neednt-You must come back every month. -Ye，s I .A. will B. must C. shoul