助動(dòng)詞和情態(tài)動(dòng)詞課件(方案C)

1、情態(tài)動(dòng)詞情態(tài)動(dòng)詞v情態(tài)動(dòng)詞的類型情態(tài)動(dòng)詞的類型1、只作情態(tài)動(dòng)詞的有：must, can(could), may(might), ought to;2、可作情態(tài)動(dòng)詞也可作實(shí)義動(dòng)詞的有：need, dare(美語中常用作實(shí)義動(dòng)詞）；3、可作情態(tài)動(dòng)詞也可作助動(dòng)詞的有: shall(should), will(would);4、具有情態(tài)動(dòng)詞的某些特征的有：have(had) to, used to.情態(tài)動(dòng)詞的特征情態(tài)動(dòng)詞的特征1、有一定的詞義，但不能單獨(dú)作謂語，它們要和行、有一定的詞義，但不能單獨(dú)作謂語，它們要和行為動(dòng)詞或連系動(dòng)詞連用，構(gòu)成謂語。為動(dòng)詞或連系動(dòng)詞連用，構(gòu)成謂語。2、適用于主語的各種人稱

2、和數(shù)、適用于主語的各種人稱和數(shù)have to例外，主語例外，主語是第三人稱單數(shù)時(shí)，要用是第三人稱單數(shù)時(shí)，要用has to）。如：）。如：We/ He must work hard. 我們我們/他一定要努力工作。他一定要努力工作。 I have to walk home. 我得步行回家。我得步行回家。 He has to walk home. 他得步行回家。他得步行回家。3、后面接原形動(dòng)詞，即不帶、后面接原形動(dòng)詞，即不帶to的不定式（的不定式（ought to, have to, used to本身帶有本身帶有to）。如：）。如：He may lose his way. 他可能會(huì)迷路。他可能會(huì)迷

3、路。You ought to obey the law. 你應(yīng)該遵守法律。你應(yīng)該遵守法律。4、具有助動(dòng)詞的作用，即可用來構(gòu)成否定句、疑、具有助動(dòng)詞的作用，即可用來構(gòu)成否定句、疑問句及用于簡明答語。如：問句及用于簡明答語。如：- I cant swim. Can you swim? - No, I cant either.-我不會(huì)游泳。你會(huì)游泳嗎？我不會(huì)游泳。你會(huì)游泳嗎？ - 我也不會(huì)。我也不會(huì)。題組訓(xùn)練題組訓(xùn)練 句子改錯(cuò)：句子改錯(cuò)：1）You ought to follow the teachers instructions, oughtnt you to ? (去掉最后一個(gè)去掉最后一個(gè) to

4、)2）You neednt to go there right away.(去掉去掉to)3) He dares go there by himself at night. (dares to go)4) How dare you to say that to your parents? (去掉第一個(gè)去掉第一個(gè) to)5) The building dating from 1916 need to be repaired. (needs to be) 表能力表能力1、表示現(xiàn)在的或一般的能力：表示現(xiàn)在的或一般的能力： 表示現(xiàn)在的或一般的能力用表示現(xiàn)在的或一般的能力用can或或be able to

5、，一般的能力即你無論什么時(shí)候想做就能做到的一般的能力即你無論什么時(shí)候想做就能做到的能力。能力。 表示現(xiàn)在的或一般的能力時(shí)，表示現(xiàn)在的或一般的能力時(shí)，can比比able to 更普遍。如：更普遍。如：A computer cant think for itself; it must be told what to do.（一般能力）（一般能力） He is a native speaker of English, so he can of course speak English quite well.（一般能（一般能力）力） I am starving to death. I can eat

6、two bowls of rice now.（現(xiàn)在的能力）（現(xiàn)在的能力）練習(xí)：練習(xí)： The biggest problem for most plants, which _ just get up and run away when threatened, is that animals like to eat them.(07湖南湖南) A. shant B. cant C. neednt D. mustnt 答案：答案： B，句意為：對(duì)絕大多數(shù)受到威脅時(shí)而不能，句意為：對(duì)絕大多數(shù)受到威脅時(shí)而不能起身逃跑的植物來說，最大的問題是動(dòng)物喜歡吃它起身逃跑的植物來說，最大的問題是動(dòng)物喜歡吃它們。情

7、態(tài)動(dòng)詞們。情態(tài)動(dòng)詞can 可以表示人的能力和物的性能，可以表示人的能力和物的性能，故選故選B表示對(duì)能力的否定。表示對(duì)能力的否定。2、表示將來的能力：、表示將來的能力：will be able to如：如： If you have a good sleep, you will be able to work our this problem. 如果你睡個(gè)好覺，那么你就能做出這個(gè)題目。如果你睡個(gè)好覺，那么你就能做出這個(gè)題目。3、表示過去的能力：、表示過去的能力：could表示過去一般的能力，表示過去一般的能力， 但不表示做或未做某事；但不表示做或未做某事；was/ were able to表示過去

8、有能力并且成功地做了某事，表示過去有能力并且成功地做了某事， 相當(dāng)于相當(dāng)于managed to do something/ succeeded in doing something； “could have +過去分詞過去分詞”表示過去有能力但未做。表示過去有能力但未做。 如：如：She could / was able to sing like an angel when she was a child.（過去一般的能力）（過去一般的能力）The fire spread through the hotel very quickly but everyone was able to get o

9、ut.（過去有能力并且成功地做了某事）（過去有能力并且成功地做了某事）I could have worked out the problem, but I didnt.（過去有能力但未做）（過去有能力但未做）題組訓(xùn)練題組訓(xùn)練 根據(jù)句意填入情態(tài)動(dòng)詞的正確形式：盡管很累了，那些冬泳者還是游過了那條河。盡管很累了，那些冬泳者還是游過了那條河。Tired as they were, the winter swimmers _ swim across the river.( were able to )老師跟我談了很久，我終于被他說服了。老師跟我談了很久，我終于被他說服了。The teacher tal

10、ked with me for a long time, and eventually, he _ make me believe him. (was able to)表示推測(cè)表示推測(cè)情態(tài)動(dòng)詞的重要用法情態(tài)動(dòng)詞的重要用法. .肯定的推測(cè)肯定的推測(cè)可能的推測(cè)可能的推測(cè)否定的推測(cè)否定的推測(cè)疑問的推測(cè)疑問的推測(cè) must/should 對(duì)將來對(duì)將來 對(duì)現(xiàn)在對(duì)現(xiàn)在 對(duì)過去對(duì)過去情態(tài)動(dòng)詞情態(tài)動(dòng)詞may, might cant, couldntcan, could + V + V + have done/常見常見must be must be doing have been doing + V. + V.

11、 + have done + be doing /have been doing 可以用可以用not表示表示“可能不可能不” +V. + V . + have done + be doing / have been doing + V. + V. + have done + be doingP.S: 1.P.S: 1.在反意疑問句中，當(dāng)附屬部分含有表示推測(cè)在反意疑問句中，當(dāng)附屬部分含有表示推測(cè)意義的意義的must時(shí)，疑問部分的時(shí)，疑問部分的助動(dòng)詞應(yīng)與助動(dòng)詞應(yīng)與must后面的后面的動(dòng)詞動(dòng)詞在非推測(cè)情況下的用法在非推測(cè)情況下的用法保持一致保持一致。 He must be a worker, isn

12、t he? （現(xiàn)在）他準(zhǔn)時(shí)個(gè)（現(xiàn)在）他準(zhǔn)時(shí)個(gè)工人，是嗎？工人，是嗎？You must have learned English for many years, havent you? （完成時(shí)）你一定學(xué)了好多年英語，（完成時(shí)）你一定學(xué)了好多年英語，是嗎？是嗎？比較：比較：It must have rained last night, didnt it? （過去）（過去）昨晚一定下雨了，是不是？昨晚一定下雨了，是不是？He must have arrived by yesterday morning, hadnt he?2. can可用于肯定句中表示客觀的（理可用于肯定句中表示客觀的（理論的）可

13、能性，而表示具體事情實(shí)際發(fā)論的）可能性，而表示具體事情實(shí)際發(fā)生的可能性時(shí)，生的可能性時(shí)，can一般不用于肯定句。一般不用于肯定句。 Accidents can happen on such rainy days.（表客觀的可能性）（表客觀的可能性） Peter may come with us tonight, but he isnt sure yet.(實(shí)際可能性不用實(shí)際可能性不用can)vcan 常用于否定句、疑問句或感嘆句中，表疑惑、驚訝或不可能等意思，could既可用于肯定句又可用于否定句、疑問句中。v This cant / couldnt be done by him. 這不可能是

14、他干的 (表不可能、不相信)v Can this be done by him? (表疑惑、驚訝)v Mr. Bush is on time for everything. How can it be that he was late for the opening ceremony? (表疑惑、驚訝) 1. I dont know where she is, she _ be in Wuhan. 2. At this moment, our teacher _ our exam papers. 這時(shí)，我們老師想必在批改試卷。這時(shí)，我們老師想必在批改試卷。 3. The road is wet

15、. It _ last night. (rain) 4. Your mother _ for you.你媽媽一定一直在找你。你媽媽一定一直在找你。 maymust be markingmust have rainedmust have been looking5. Philip _ seriously in the car accident. 菲利普可能在車禍中受了重傷菲利普可能在車禍中受了重傷.6. -Linda has gone to work, but her bicycle is still here.-She _ (go) by bus.7. Mike _ his car, for

16、he came to work by bus this morning.邁克一定還沒有找回他的車，因?yàn)樵缟纤亲~克一定還沒有找回他的車，因?yàn)樵缟纤亲?公共汽車來上班的。公共汽車來上班的。may (might) have been hurtmay (might) have gonecant have found1 - Hi, Tom. Any idea where Jane is ? - She _ in the classroom. I saw her there just now. （2009 重慶）重慶） A. shall be B.should have been C. must b

17、e D. might have been 2 - What do you mean, there are only ten tickets? There _ be twelve. （2009全國）全國） A. should B. would C. will D. shall 3 The traffice is heavy these days. I _ arrive a bit late, so could you save me a place? （2009遼寧）遼寧） A. can B. must C. need D.might 4（2009上海）上海）It _ have been Tom

18、 that parked the car here, as he is the only one with a car. A. may B. can C. must D.should 5（2009安徽）安徽）Some people who dont like to talk much are not necessarily shy; they _ just be quiet people. A. must B. may C. should D. would6、(2008湖南湖南)You dont have to know the name of the author to find a boo

19、k. You _find the book by the title. A. must B. need C. can D. would7、(2008 福建福建) It is usually warm in my hometown in March, but it _ be rather cold sometimes. A. must B. can C. should D.would8（2009北京）北京）One of the few things you _ say about English people with certainty is that they talk a lot abou

20、t the weather. A. need B. must C. should D. can根據(jù)句意，選用can,may, 和must填空。1. Anybody _ make mistakes. 2. Mr. Read looks pale. He _ be ill. 3. Mr. Read is in poor health. He _ be ill at any time. 4.- Look, someone is coming. Who_ it be? - It _ be the headmaster. - It _ be him. He has gone to Shanghai. -

21、 It _ be Mr. Zhang. He looks like the headmaster. (can) may(can)(can)(may)(cant)(must)表示請(qǐng)求、允許、允諾表示請(qǐng)求、允許、允諾1. 當(dāng)對(duì)方是決策者時(shí)，你代表你（們）自己（當(dāng)對(duì)方是決策者時(shí)，你代表你（們）自己（I， We），或代表第三者（），或代表第三者（he,she,they）向?qū)Ψ剑┫驅(qū)Ψ剑▂ou）請(qǐng)示或提出建議時(shí)用：）請(qǐng)示或提出建議時(shí)用： Shall / May (Might) / Can (Could) I / we.?Shall he / she / they.?Would / Will you.?S

22、hall we begin our class? 我們開始上課嗎？我們開始上課嗎？Shall the driver wait outside? 司機(jī)將在外面等司機(jī)將在外面等嗎？嗎？When shall my father be able to leave hospital? 我父親什么時(shí)候能出院？我父親什么時(shí)候能出院？Would you do me a favor? 你能幫我一個(gè)忙嗎？你能幫我一個(gè)忙嗎？2. could / might / would 表委婉的功能。如：表委婉的功能。如： - Could / Might I use your bike tomorrow morning? - Y

23、es, you can /may. (否定否定: No, Im afraid not)不可說：不可說：Yes, you could / might. 回答允許時(shí)，回答允許時(shí)，用用could / might 表委婉是不恰當(dāng)?shù)?。表委婉是不恰?dāng)?shù)摹?. 當(dāng)你自己（當(dāng)你自己（I）是決策者，給對(duì)方（）是決策者，給對(duì)方（you）或第）或第三者（三者（he，she，they）以命令、警告、允諾）以命令、警告、允諾或威脅時(shí)，要用或威脅時(shí)，要用shall。此外，當(dāng)頒布法律、規(guī)。此外，當(dāng)頒布法律、規(guī)定時(shí)，也要用定時(shí)，也要用shall。如：。如：You shall leave the room at once, a

24、nd he also shall.( =I order you and him to leave the room at once.) 你馬上給我滾出去！他也你馬上給我滾出去！他也一樣。（說話者的意志）一樣。（說話者的意志） It has been announced that candidates shall remain in their seats until all the papers have been collected.在所有試卷收上在所有試卷收上來之前，來之前， 應(yīng)試者必須留在座位上。（規(guī)則或規(guī)應(yīng)試者必須留在座位上。（規(guī)則或規(guī)定）定） 4will 可表示意愿、習(xí)慣或傾向（否定

25、句中表示可表示意愿、習(xí)慣或傾向（否定句中表示不肯、不能）、在疑問句中表示請(qǐng)求和建議不肯、不能）、在疑問句中表示請(qǐng)求和建議. I will try. She will sit there for hours, waiting for her son to come back. Will you please explain the sentence once more?題組訓(xùn)練 根據(jù)對(duì)話內(nèi)容，選用 can, may, will的正確形式填空。1- Could you lend me your book? - Certainly, I _. (can)2- Might I ask you a qu

26、estion? - Surely, you _. (may)3 - _ you do me a favor? - Of course, I will. (Would)4 - Dont forget to bring some money on you. - OK, I _. ( wont)5- Excuse me, but would you like to do it for me?- Yes, I _. A. would B.will C. would like to D.will do 6) “The interest _ be divided into five parts, acco

27、rding to the agreement made by both sides,” declared the judge. may B. should C. must D. shall 7） He _ be punished if he disobeys. (shall） 如果他不服從如果他不服從, 就要受到懲罰就要受到懲罰.8. We are not going to quarrel at all if you _only let me speak. (will) 只要你讓我說話只要你讓我說話, 我們根本就不會(huì)吵架我們根本就不會(huì)吵架.9. -Sir, _ he go or stay? -

28、Let him go. A. will B. shall C. might D. could10. The door _ open. 這門經(jīng)常打不開這門經(jīng)常打不開. (wont)11. Ronald _ stay in his small garden for a long time every day in the past. A. could B. might C. should D. would You _ have the book after I read it. (shall) 我看完以后一定把這本書給你我看完以后一定把這本書給你. 表示必要性（責(zé)任表示必要性（責(zé)任 /義務(wù)）義務(wù)）

29、1.must 表示義務(wù)表示義務(wù), 意為意為“必須必須”（主觀意志）（主觀意志）,表現(xiàn)在表現(xiàn)在和將來必須做某事用和將來必須做某事用“must+動(dòng)詞原形動(dòng)詞原形”，表現(xiàn)在，表現(xiàn)在或?qū)聿槐刈瞿呈掠没驅(qū)聿槐刈瞿呈掠谩癲ont have todo或或dont need todo或或neednt do sth”， 例如：例如： We must do everything step by step. 我們一切我們一切都必須循序漸進(jìn)地做。都必須循序漸進(jìn)地做。 -Must we hand in our exercise books now?我我們現(xiàn)在就要交練習(xí)本嗎？們現(xiàn)在就要交練習(xí)本嗎？-No, you n

30、eednt. / No, you dont have to. 不必。不必。neednt have done 表示過去做了某事，但沒有做的表示過去做了某事，但沒有做的必要，必要， 意為意為“本沒必要本沒必要”。例如：。例如：You neednt have waken me up; I dont have to go to work today. must和和 have to must表示主觀意志，而表示主觀意志，而have to表示由于客觀因素不得不做某事。表示由于客觀因素不得不做某事。must沒有過沒有過去式，除在間接引語中可用于表示過去時(shí)間，在去式，除在間接引語中可用于表示過去時(shí)間，在直接引

31、語中表示過去時(shí)間應(yīng)該用直接引語中表示過去時(shí)間應(yīng)該用had to代替。代替。I told her that she must give up smoking. 我我叫她必須戒煙。叫她必須戒煙。We had to get everything ready that night. 我我們那晚得把一切準(zhǔn)備就緒。們那晚得把一切準(zhǔn)備就緒?！白ⅲ鹤ⅲ簃ust 還可表示還可表示“偏要、硬要偏要、硬要”，如：，如： - How old are you, madam? - If you must know, Im twice my sons age. 2. should1) 表義務(wù)。意為表義務(wù)。意為“應(yīng)該應(yīng)該”（

32、某件事宜于做），用于（某件事宜于做），用于各種人稱。例如：各種人稱。例如： You should be polite to your teachers. 你對(duì)你對(duì)老師應(yīng)該有禮貌。老師應(yīng)該有禮貌。 You shouldnt waste any time. 你不應(yīng)該浪費(fèi)你不應(yīng)該浪費(fèi)時(shí)間。時(shí)間。.3、ought to 1) 表義務(wù)，意為表義務(wù)，意為“應(yīng)該應(yīng)該”（因責(zé)任、義務(wù)等該做），（因責(zé)任、義務(wù)等該做），口氣比口氣比should稍重。例如：稍重。例如： You are his father. You ought to take care of him.你是他父親，應(yīng)當(dāng)管他。你是他父親，應(yīng)當(dāng)管他。

33、You oughtnt to smoke so much. 你不應(yīng)該抽你不應(yīng)該抽這么多煙。這么多煙。ought to / should have done和和 ought not to / shouldnt have done用用于對(duì)已發(fā)生的情況表示于對(duì)已發(fā)生的情況表示“責(zé)備責(zé)備”、“不不滿滿”，分別表示，分別表示“本應(yīng)該本應(yīng)該”和和“本不應(yīng)本不應(yīng)該該”。例如：。例如： With all the work finished, I should have gone to the party last night. You ought not to have made fun of him. He

34、 is not the one you laugh at but learn from.五表示五表示“寧愿做某事寧愿做某事”時(shí)，可使用時(shí)，可使用下面這些句式：下面這些句式： would rather do sth. would rather do sth. than do sth.would do sth. rather than do sth. would rather sb. did sthprefer to do sth prefer to do sth. rather than do sth prefer doing sth . to doing sth 高考中對(duì)這類用法的考查主要側(cè)重

35、結(jié)構(gòu)，因些高考中對(duì)這類用法的考查主要側(cè)重結(jié)構(gòu)，因些要熟記其結(jié)構(gòu)。要熟記其結(jié)構(gòu)。題組練習(xí)：題組練習(xí)： 根據(jù)括號(hào)內(nèi)的中文提示，選用最佳根據(jù)括號(hào)內(nèi)的中文提示，選用最佳的情態(tài)動(dòng)詞填空：的情態(tài)動(dòng)詞填空：1We _（必須）（必須）report the matter to the boss immediately. 2We _（有必要）（有必要）to report the matter to the boss immediately. 3 I got up early, but I _（沒必要）（沒必要）have done so, because I had nothing to do that morni

36、ng. 4 It is raining so hard. I _（寧愿）（寧愿）stay at home. 5 If you_（非要）（非要）smoke here, do it outside, please. (must)(need)(neednt)(would rather)(must)6. I cant leave. She told me that I _ stay here until she comes back. (09全國全國) A. can B. must C. will D. may 7The doctor recommended that you _ swim after

37、 eating a large meal. (09浙江浙江) A.wouldnt B. couldnt C. neednt D. shouldnt8- I dont care what people think. - Well, you _. （09 四川）四川） A. need B. would C. should D. might9 - Im sorry. I _ at you the other day. - Forget it. I was a bit out of control myself. （08江蘇）江蘇） A. shouldnt shout B. shouldnt have

38、 shouted C. mustnt shout D. mustnt have shouted10- Its the office! So you _ know eating is not allowed here. - Oh, sorry. （2009湖南）湖南） A. must B. will C. may D. need11- Lucy doesnt mind lending you her dictionary. - She _. I ve already borrowed one. （05湖南）湖南） A. cant B. mustnt C. neednt D. shouldnt12

39、 - Could i have a word with you, Mum? - Oh dear, if you _. （06浙江）浙江） A. can B. must C.may D. should 13 Some aspects of a pilots job _ be boring, and pilots often _ work at inconvenient hours. （06湖南）湖南） A. can; have to B. may; canC. have to; may D. ought to; must 情態(tài)動(dòng)詞情態(tài)動(dòng)詞+have+done” 表表“本來本來” 使用情形分析使用

40、情形分析1、should have done過去本來應(yīng)該過去本來應(yīng)該 （而實(shí)際上并沒有（而實(shí)際上并沒有) should not have done 本不應(yīng)該本不應(yīng)該 而實(shí)際上卻已而實(shí)際上卻已經(jīng)經(jīng)”如：如：We should have studied last night, but we went to the concert instead . 我們昨晚本應(yīng)學(xué)習(xí)的，但我們卻我們昨晚本應(yīng)學(xué)習(xí)的，但我們卻去看音樂會(huì)了。（實(shí)際上沒有學(xué)習(xí)）去看音樂會(huì)了。（實(shí)際上沒有學(xué)習(xí)）2、could have done它表示它表示過去本來能夠過去本來能夠 實(shí)際上沒能做實(shí)際上沒能做。如。如I could have r

41、un 100 metres in 12 seconds. 我本來能用我本來能用12秒鐘完秒鐘完100米的米的.（實(shí)際上沒能）（實(shí)際上沒能）If you could have finished the task in time，you could have been promoted. 如果你當(dāng)時(shí)能如期完成那任務(wù)的話，你可能已如果你當(dāng)時(shí)能如期完成那任務(wù)的話，你可能已提升了（實(shí)際上沒有被提升）提升了（實(shí)際上沒有被提升）3、need not have done它表示過去已做的事，事實(shí)上沒有必要。如，它表示過去已做的事，事實(shí)上沒有必要。如，I need not have got up so early

42、 . 我本來不必要那么早起床的（我本來不必要那么早起床的（事實(shí)上早已起床事實(shí)上早已起床）I need not have waited for the train for an hour. 我本來不必要等一個(gè)小時(shí)的火車。我本來不必要等一個(gè)小時(shí)的火車。（事實(shí)上已經(jīng)等了一個(gè)小時(shí)）（事實(shí)上已經(jīng)等了一個(gè)小時(shí)）問題問題: : would have donewould have done在什么情況下使用呢在什么情況下使用呢? ?四、四、would have done 用在虛擬語氣中用在虛擬語氣中 表示表示與過去事實(shí)相反之假設(shè)的結(jié)果與過去事實(shí)相反之假設(shè)的結(jié)果，常與，常與if 的條件的條件句連用。句連用。 I

43、would have helped you if I had known of your difficulties . 要是我當(dāng)時(shí)知道你們的窘境，我就會(huì)幫要是我當(dāng)時(shí)知道你們的窘境，我就會(huì)幫助你了（而實(shí)際上沒有幫助你）助你了（而實(shí)際上沒有幫助你）If it hadnt rained yesterday, we would have gone out for a walk .假如昨天沒下雨，我們就去散步了。（實(shí)假如昨天沒下雨，我們就去散步了。（實(shí)際上沒有去）。際上沒有去）。5 had better have done用于事后的建議，含用于事后的建議，含有輕微責(zé)備的口吻，意為有輕微責(zé)備的口吻，意為“

44、當(dāng)時(shí)最好做了某事當(dāng)時(shí)最好做了某事”，其否定式其否定式 表達(dá)相反的含義。表達(dá)相反的含義。 You had better have started earlier. You had better not have scolded her.6 would rather have done表示表示“當(dāng)時(shí)寧愿做當(dāng)時(shí)寧愿做某事某事”，其否定式，其否定式 would rather not have done 表達(dá)相反含義，兩者都表示表達(dá)相反含義，兩者都表示“后悔后悔”之意。之意。I would rather have taken his advice.I raised objections at the m

45、eeting, but now I would rather not have done that.Practice1.Mr White _ at 8:30 for the meeting, but he didnt turn up. A. should have arrived B. should arrive C. should have had arrived D. should be arriving2. If he had been here yesterday, he _ this pop star.A. would meet B. would have metC. met D.

46、must have met3.It is hard for me to imagine what I would be doing today if I_ in love at the age of seven with the Melinda Cox Library in my hometown.A. wouldnt have fallen B. had not fallenC. should fall D. were to fall4. But for the help of my English teacher, I _ the first prize in the English Wr

47、iting Competition. A. would not win B. would not have won C. would win D. would have won5. This printer is of good quality. If it _ break down within the first year, we would repair it at our expense.(09天津天津) A. would B. should C. could D. might 此處此處should（表示不確定）萬一，（表示不確定）萬一， 用于虛擬語氣。相當(dāng)于用于虛擬語氣。相當(dāng)于wer

48、eto例如：例如： If I should see him, Ill tell him. 萬一我見到他，我就告訴他。萬一我見到他，我就告訴他。 If it should rain tomorrow, the sports meeting would be postponed. 萬一明天下雨萬一明天下雨,比賽就延期舉行。比賽就延期舉行。6Thank you for all your hard work last week. I dont think we _ it without you.（08山東）山東） A. can manage B. could have managed C. could

49、 manage D. can have managed 7 He paid for a seat, when he _ have entered free.（05山東）山東） A. could B. would C. must D. need可兼做行為動(dòng)詞的情態(tài)動(dòng)詞：可兼做行為動(dòng)詞的情態(tài)動(dòng)詞：need 、 dare 情態(tài)動(dòng)詞 (+動(dòng)詞原形)行為動(dòng)詞 .needdare 1.無人稱和數(shù)的變化無人稱和數(shù)的變化; 2.尤其用于：尤其用于：*否定句及疑問句中否定句及疑問句中;*在在if/whether之后之后;*或與或與hardly, never, no one, nobody連用連用; 3.常以常以

50、neednt 和和darent 的形式出現(xiàn)的形式出現(xiàn);4.dare有其過去時(shí)有其過去時(shí)dared. 多用于肯定句多用于肯定句; (sb.) need to do dare to do(sth.) need to be done (sth.) need doing I darent ask her for a rise. 我不敢請(qǐng)求她加薪我不敢請(qǐng)求她加薪.How did you dare to tell her that? I wonder whether he dare stand up in public. I dont know how she dares to wear that dress. Do you need any help?I wonder whether he need send it immediately.I need hardly tell you that the work is