2019-2020年高中英語(yǔ) 語(yǔ)法沖刺 情態(tài)動(dòng)詞1. China is developing its high-speed train technology fast, so it _be good enough to catch up with the best. A. may B. might C. must D. should2. Then some other interesting reasons appear, such as “Its so smoggy that I _find my way to office."A. mustnt B. wont C. cant D. shouldnt3. "The world is big, and I want to see it," wrote a teacher in her resignation letter. _ you quit your job to travel the world? A. Must B. Might C. Should D. Would 【答案揭曉】CCD一、情態(tài)動(dòng)詞的定義情態(tài)動(dòng)詞是一種本身有一定的詞義，但要與動(dòng)詞原形或其被動(dòng)語(yǔ)態(tài)一起使用，給謂語(yǔ)動(dòng)詞增添情態(tài)色彩，表示說(shuō)話人對(duì)有關(guān)行為或事物的態(tài)度和看法，認(rèn)為其可能.應(yīng)該或必要等。情態(tài)動(dòng)詞后面加動(dòng)詞原形。1. No driving electric motorbikes in some areas is a rule that we shall obey in Fuzhou. 必須.一定（法律.法規(guī)等） 動(dòng)詞原形2. Women who are exposed to second-hand smoke during their pregnancy can be at risk of abortion.能，會(huì)，可以(表示有能力或機(jī)會(huì)) 動(dòng)詞原形二、?？记閼B(tài)動(dòng)詞的關(guān)鍵用法(一) can1. Jim，it is time you went to bedYou need to get up early tomorrow.Its not fair，Mary can stay up till ten hut I have to go to bed at eight.可以(表示允許)2.If it were not for the fact that she cant sing，I would invite her to the party.能，會(huì)，可以(表示有能力)3. Luckily, iron can be reworked and mistakes dont have to be thrown away能夠，可以(表示某事物的特點(diǎn))4.Peter can be really difficult to get along with at times even though hes a nice person in general. 有可能;有時(shí)會(huì)5. I cannot choose but to go.不能，無(wú)法 (用于否定句，表示情況不允許)6.I cannot thank you enough,it has been a wonderful day. 再.也不為過(guò) ( 也可以用can never/hardly.too much)7.Is Jack on duty today?It cant be him.Its his turn tomorrow.不可能 (can可用于否定句/疑問(wèn)句中表猜測(cè)，此句表對(duì)現(xiàn)在的猜測(cè))8.Can he have been chosen as captain of the football team? Yes, he must have. 可能 （can可用于否定句/疑問(wèn)句中表猜測(cè)，can have done表示對(duì)過(guò)去的猜測(cè)猜測(cè)）9. This old lady was struggling out of the train and I said, Oh, can I help you?能 (通常用于疑問(wèn)句，表示建議或提議幫忙)10. Can you just lift the table for a second?(用于疑問(wèn)句時(shí),can 表示禮貌的請(qǐng)求，而 cant 表示強(qiáng)烈請(qǐng)求） (二) could1.For my return journey, I felt I could afford the extra and travel first class能;會(huì) (表示發(fā)生在過(guò)去的能力)2.I feel bored with nothing interesting to do.-You could watch TV. There will be a very good Hollywood film on this evening.可以(表示提議或建議)3. Could I have a look? -Of course you can. 表許可（委婉的語(yǔ)氣用could，回答時(shí)用can）4. An improvement in living standards could be years away.可能(表示某事可能屬實(shí)或可能發(fā)生，對(duì)將來(lái)或者現(xiàn)在發(fā)生事情的肯定猜測(cè))5.When the ship sailed out from Thailand, the 16 sailors on board couldnt have thought_ that only half of 可能 (could have done，只用于否定句和疑問(wèn)句中，表示對(duì)過(guò)去發(fā)生事情的猜測(cè))them would return again. 高.考.資.源.網(wǎng)6. He did not regret saying what he did but felt that he could have expressedit differently.(could have done用于肯定句中，表虛擬語(yǔ)氣，表示過(guò)去本有可能發(fā)生的事情但卻并未發(fā)生，不能使用 cant have done的形式)（三）be able to1.Even if standardized tests like the SAT could show a students academic proficiency（學(xué)業(yè)水平）,they will never be able to test things like confidence, efforts and willpower, and are unable to give us the full picture of a students potentialities（潛力） 【解析】be able to 解釋為“能夠”，有各種時(shí)態(tài)的形式。注：can 和be able to 都可以表示能力.can泛指一般的能力,而且只有兩種形式,即:can, couldbe able to 則主要指具體做到了某件事的能力，其形式主要是靠be 發(fā)生變化，所以形式比can 多可以說(shuō)：I can swim. I am able to swim. 但是不能說(shuō)：All the people could escape from the big fire in time. 只能說(shuō)：All the people were able to escape from the fire in time.(四) may1.Every one of us may plant a tree in the school, or organize a thorough cleaning on the campus.可以(表許可)2. （1）Some people who dont like to talk much are not necessarily shy；they may just be quiet people.有可能，也許(may表猜測(cè)，用于肯定或否定句中，此例表示對(duì)現(xiàn)在某種情況的猜測(cè)）（2）You might just as well tell the manufacturer that male customersmay not like the design of the furniture. 也許，可能(may表猜測(cè)，用于肯定或否定句中，may not 為“可能不”的意思)（3）I cant find my purse anywhere.Youmay have lost it while shopping.(may表猜測(cè)，may have done表示對(duì)過(guò)去或者現(xiàn)現(xiàn)在已經(jīng)完成的動(dòng)作的肯定猜測(cè)) 3.May God bless you! 祝;但愿(五) might1.I was wondering if I might ask you a favor? 可不可以，能否(用于禮貌地打斷別人.提出問(wèn)題.做出請(qǐng)求或引出接下來(lái)要說(shuō)的話)2.Excuse me.Is this the right way to the Summer Palace? Sorry，I am not sure.But it might be.可能(表不是很有把握的猜測(cè)，語(yǔ)氣比may 弱)3.Where is my dictionary? I remember I put it here yesterday.You might have put it in the wrong place.(might表猜測(cè)，might have done則表示對(duì)過(guò)去或者現(xiàn)已完成的動(dòng)作的肯定猜測(cè)=may have done)4. I told your friend how to get to the hotel，but perhaps I might have driven her there.（此處，might have done表虛擬語(yǔ)氣，意為“過(guò)去原本可能/可以做到的事而未做”）5.This holiday isnt much fun; we mightmay as well be back home.只好(做);(做)也無(wú)妨(六) will1.The low test score, they think, will make it impossible for them to get into a good college.將（表示將來(lái)）2.You will carry out these instructions and report back into this afternoon.(表示將來(lái)的正式安排)3.He will bee her senior adviser- her deputy, if you will.愿意4.-Anyone, answer the phone? - I will. 臨時(shí)的決定5. Mary will sit for hours reading. The window will not open, however hard he tries. 表現(xiàn)在經(jīng)常反復(fù)的動(dòng)作或者趨向6. Man will die without air.表必然性(七) would1.John promised his doctor he would not smoke，and he has never smoked ever since.（will 的過(guò)去式，用于轉(zhuǎn)述）將2.Hurry up! It would be a shame to miss the beginning of the play.Shed be a fool to accept it.將，將會(huì)(表示判斷或看法)3.She wouldnt change it even though she knew it was wrong.不愿(表示意愿) 4.When he had a problem to solve，he would work at it until he found an answer. 常常（表示過(guò)去的習(xí)慣）She would be always the first to offer to help. The car wouldnt start this morning.老是，總是（表趨向） (八) shall1.We/I shall call you back this afternoon.(表將來(lái)用于No.1人稱)2.- Has Mr. Tom White arrived? - Yes, already. Shall he wait outside or just e in? (shall用在疑問(wèn)句中，且主語(yǔ)為No.1/No.3人稱，表示征求對(duì)方意見(jiàn))3.（1）What does the sign over there read?“No person shall smoke or carry a lighted cigarette，cigar or pipe in this area.”（2）“The interest shall be divided into five parts，according to the agreement made by both sides，”declared the judge.（3）You shall get the answer tomorrow.（4）They shall not be allowed in after 11 p.m. (shall用在陳述句中，且主語(yǔ)為No.2/No.3人稱時(shí)，表示允諾、命令、警告、決心或規(guī)定)(九) should/ought to1. I think Ill give Bob a ring. You should. You havent been in touch with him for ages.應(yīng)該;應(yīng)當(dāng)2. (1) Margaret should not stay at home all day long in front of the TV.應(yīng)該，必須(表示給出指示或公布官方命令)(2) That s rightShe ought to go to the fitness center with us. 應(yīng)該，必須3.There should not be any difficulty about passing the road test since you have practised a lot.應(yīng)該，可能 (表示預(yù)期或可能性)4.If you should be fired, your health and pension benefits will not be automatically cut off將要，假定要 (用在虛擬條件從句中表示事件發(fā)生的可能性)5.I insisted that we should have a look at every car應(yīng)該(用在某些動(dòng)詞、名詞之后that引導(dǎo)的虛擬語(yǔ)氣從句中) 6. Its surprising/strange that he should be a thief. 竟然 （用在某些adj./n. 之后that 引導(dǎo)的虛擬語(yǔ)氣中）7.Ill tell Mary about her new job tomorrow.You should have told her last week. (should have done=ought to have done， 表示本應(yīng)該做的事而未做)8.You oughtnt to have been late for yesterdayS class meeting，as it was so important (ought not to have done=should not have done，表示過(guò)去本不該做的事卻做了) 注：ought to與 should的用法區(qū)別如下1. 一般說(shuō)來(lái)，兩者可替換，只是ought to語(yǔ)氣稍重。如：You ought to/should go and see Mary. 你應(yīng)該去看看瑪麗。2. 表示出于法令規(guī)則、行為準(zhǔn)則、道德責(zé)任等客觀情況而“應(yīng)該”做某事時(shí)，一般應(yīng)用ought to，若用should則強(qiáng)調(diào)個(gè)人意見(jiàn)、主觀看法。如：We ought to go and see Mary tomorrow, but I dont think we will. 明天我們按理應(yīng)該去看看瑪麗，但是我認(rèn)為我們?nèi)ゲ涣恕?(此句不宜用should)。3. 在公告、須知或條例中，出于禮貌，常用should. 如：You should not run alongside the swimming-pool. 不準(zhǔn)在游泳池邊奔跑(十) must/ have to1. Its the office! So you must know eating is not allowed here. Oh, sorry.必須，應(yīng)當(dāng) (通常因?yàn)橐?guī)定或法律)2. In crowded places like airports and railway stations， you must take care of your luggage.務(wù)必，一定要 (用于表示建議或邀請(qǐng))John，look at the time. Must you play the piano at such a late hour?偏偏，非要 (用于問(wèn)句中表示生氣)4. Tom，you mustnt leave all your clothes on the floor like this!一定不要Hi, Tom. AnyideawhereJaneis? She_must be_intheclassroom. Isawhertherejustnow.很可能是，想必是，肯定是(must表猜測(cè)，只用于肯定句中，此句是對(duì)現(xiàn)在的猜測(cè))Guess what？ I have got A for my term paper.Great!You must have read widely and put a lot of work into it. (must have done表示據(jù)已知情況對(duì)過(guò)去情況進(jìn)行肯定的推測(cè)，只用于肯定句中)Some aspects of a pilots job can be boring，and pilots often have to work at inconvenient hours.必須，不得不What do you think we can do for our aged parents?You dont have to do anything except to be with them and be yourself.不必【解析】have to和must1) 兩詞都是必須的意思，have to 表示客觀的需要， must 表示說(shuō)話人主觀上的看法，既主觀上的必要。My brother was very ill, so I had to call the doctor in the middle of the night. 我弟弟病得很厲害，我只得半夜里把醫(yī)生請(qǐng)來(lái)。(客觀上需要做這件事)He said that they must work hard. 他說(shuō)他們必須努力工作。（主觀上要做這件事）2) have to有人稱.數(shù).時(shí)態(tài)的變化，而must只有一種形式。但must 可用于間接引語(yǔ)中表示過(guò)去的必要或義務(wù)。He had to look after his sister yesterday.3） 在否定結(jié)構(gòu)中： dont have to 表示"不必" mustnt 表示"禁止"，You dont have to tell him about it. 你不一定要把此事告訴他。You mustnt tell him about it. 你一定不要把這件事告訴他。(十一) need/ dare1. What sort of house do you want to have? Something big?Well， it need not be bigthats not important.必要(need作為情態(tài)動(dòng)詞只用于否定句和疑問(wèn)句中)2. Catherine，I have cleaned the room for you.Thanks.You neednt have done it.I could manage it myself. (neednt have done 表示過(guò)去本不必做的事卻做了)3. I dare say you are British but you still need a passport to prove it.可能，大概;想必，我想【固定搭配】4. The goverment dare not raise interest rates again. 敢(dare作為情態(tài)動(dòng)詞只用于否定句和疑問(wèn)句中)5. How dare you talk to me like that? 竟敢(dare作為情態(tài)動(dòng)詞只用于否定句和疑問(wèn)句中)【解析】1.need/dare作情態(tài)動(dòng)詞無(wú)人稱或數(shù)的變化， 后接動(dòng)詞原形，多用于否定句和疑問(wèn)句中，但I(xiàn) dare say 例外。2.need 作為行為動(dòng)詞有人稱和數(shù)的變化， 后面可接名詞、代詞、動(dòng)名詞及帶to 的動(dòng)詞不定式；可用于肯定句、疑問(wèn)句和否定句中。如：（1）She needs help.她需要幫助。（2）-Do I need to go at once? 我需要馬上走嗎？ 區(qū)別 Need I go at once?- Yes, you must. / No, you neednt.（3）It was Sunday and she didnt need to go to work. So she stayed at home. (后加to，實(shí)義動(dòng)詞) She neednt have gone to work that day. She could have stayed at home.（后加原形，情態(tài)動(dòng)詞）3.dare用作實(shí)義動(dòng)詞，其后可帶動(dòng)詞不定式，否定句中也可帶省to不定式，且有人稱和數(shù)以及時(shí)態(tài)的變化。例如： (1) I dare to jump down from the top of the wall. 我敢從那墻頭上跳下來(lái)。 (2) She doesnt/didnt dare (to) meet her teachers eyes. 她不敢與老師對(duì)視。 三、情態(tài)動(dòng)詞重點(diǎn)用法小結(jié)表示猜測(cè)（可能性）詞形肯定式否定式疑問(wèn)式must必然.必定/should按說(shuō)應(yīng)該/ought to按說(shuō)應(yīng)該/can/不可能有可能嗎？could微弱的可能不可能語(yǔ)氣比can弱may或許，也許，可能不/might比 may 還弱比may not 還弱/【注】對(duì)現(xiàn)在或者將來(lái)可能發(fā)生事情的猜測(cè)的結(jié)構(gòu)為： must/should/ought to/cant/could/may/might + V(原形) 對(duì)過(guò)去可能發(fā)生事情的猜測(cè)的結(jié)構(gòu)為： must/ cant/couldnt/may/might + have V-ed 例如：He may/might/must/should be on his way home now.(現(xiàn)在) I didnt hear the phone. I must have been asleep.（過(guò)去）情態(tài)動(dòng)詞+have done情態(tài)動(dòng)詞+完成式用法例句must have done(過(guò)去)想必/準(zhǔn)是/一定做了否定為：cant/couldnt have doneIt must have rained last night, for the road is quite muddy.can/could not have done用于疑問(wèn)句/否定句，表猜測(cè)，(過(guò)去)可能做了某事Can he have gone to his aunts?He cannot have forgotten it.could have done表虛擬，用于肯定句，“過(guò)去本可以做而未做”Tom could have done better in the exam.may/might （not）have done1.也許，或許（肯定句）2.可能不（否定句）3.表虛擬語(yǔ)氣，“(過(guò)去)本可以做到而沒(méi)做到”Its too late. I think he may have gone to bed.He may not have finished the work.You didnt do the work well that day. You might have done it better.should/ought to have done(過(guò)去)本該做某事，而實(shí)際上未做You ought to have done this exercise more carefully.should not/ought not to have done(過(guò)去)本不該做某事，而實(shí)際上做了You shouldnt have told her the truth.neednt have done(過(guò)去)本不必做某事而做了You neednt have taken a taxi there, for it was very near to my house.had better （not） have done(過(guò)去)最好（沒(méi)）做了You had better not have scolded me.would rather （not） have done寧愿(過(guò)去)（沒(méi)）做了I raised objections at the meeting, but now I would rather not have done that.would like/love （not） to have done(過(guò)去)本（不）打算做但未做成I would love to have gone to the party last night, but I had to work extra hours to finish a report.情態(tài)動(dòng)詞解題技巧關(guān)鍵詞：一情，二境，三時(shí)(1) 認(rèn)真審題，結(jié)合所給出的語(yǔ)境，正確把握說(shuō)話者的語(yǔ)氣.情感.態(tài)度.觀點(diǎn)等。 (2) 認(rèn)真思考所給選項(xiàng)中情態(tài)動(dòng)詞的基本特征和用法，并結(jié)合語(yǔ)境推敲答案。 (3) 要注意把握時(shí)間概念。 例如： Thank you for all your hard work last week. I dont think we _ it without you. 過(guò)去 “（要）沒(méi)你” A. can manage B. could have managed C. could manage D. can have managed 根據(jù)題干中所給出的時(shí)間last week可知我們已經(jīng)做完了工作，已經(jīng)完成，故排除A.C兩項(xiàng)，再結(jié)合could (not) have done表示猜測(cè)可知說(shuō)話者想表達(dá)的意思是：要沒(méi)你，我們不可能完成這項(xiàng)工作。故答案為B項(xiàng)。情態(tài)動(dòng)詞經(jīng)典考題1. I _ use a clock to wake me up because at six oclock each morning the train es by my house.A. couldnt B. mustnt C. shouldnt D. neednt2. Im going to Europe on vacation together with John if I _ find the money.A. can B. might C. would D. need3. We _ the difficulty together, but why didnt you tell me?A. should face B. might face C. could have faced D. must have faced4. The new law states that people _ drive after drinking alcohol. A. wouldnt B. neednt C. wont D. mustnt5. Its quite warm here; we _turn the heating on yet.A. couldnt B. mustnt C. neednt D. wouldnt6. Days later, my brother called to say he was all right, but _ say where he was. A. mustnt B. shouldnt C. wouldnt D. mightnt 7. Sorry, I am too busy now. If I _ time, I would certainly go for an outing with you. A. have hadB. had had C. have D. had8. One of our rules is that every student wear school uniform while at school. A. might B. could C. shall D. will9. I_ thank you too much for all your help to my son while we were away from home. A. wont B. cant C. can D. will 10. _ you interrupt now? Cant you see Im on the phone? Sorry Sir, but its urgent. A. Can B. Should C. Must D. Would11. I got close enough to hear them speaking Chinese, and I said “Ni Hao” just as I _ do in China.A. must B. might C. can D. should 12.We have bought so much food now that Suzie wont be with us for dinner.Amay notBneednt Ccant Dmustnt 13.There were already five people in the car but they managed to take me as well. It _a fortable journey.A.cant be B.shouldnt be C.mustnt have been D.couldnt have been14.Its nearly seven oclock , Jack be here at any moment.A.must B.need C.should D.can15.We last night , but we went to the concert instead.A.must have studied B.might study C.should have studied D.would study參考答案：DACDC CDCBC BBDCC