Question

must must ★★★★★/məst, STRONG mʌst/Must is a modal verb. It is followed by the base form of a verb.must为情态动词，后跟动词原形。The noun is pronounced /mʌst/. 名词读作 /mʌst/。1[MODAL	情态动词]必须；一定要 You use must to indicate that you think it is very important or necessary for something to happen. You use must not or mustn't to indicate that you think it is very important or necessary for something not to happen. What you wear should be stylish and clean, and must definitely fit well...你的穿着应该整洁漂亮，而且必须非常合身。You are going to have to take a certain amount of criticism, but you must cope with it...你肯定会遭到一些批评，但你必须去面对。The doctor must not allow the patient to be put at risk...医生决不能置患者于危险境地而不顾。The soil must not be overwatered, especially during the first few weeks...切忌土壤过涝，尤其在最初几周。We must not forget your  birthday.我们一定不能忘了你的生日。2[MODAL	情态动词](通常因为规定或法律)必须，应当 You use must to indicate that it is necessary for something to happen, usually because of a rule or law. Candidates must satisfy the general conditions for admission...候选人必须满足参选的总体条件。Mr Allen must pay Mr Farnham's legal costs...艾伦先生应当支付法纳姆先生的诉讼费。Equipment must be supervised if children are in the house.如果孩子们在屋里，必须有人监管设备。3[MODAL	情态动词](用于表示肯定推测)一定，谅必 You use must to indicate that you are fairly sure that something is the case. At 29 Russell must be one of the youngest ever Wembley referees...29岁的拉赛尔一定是有史以来温布利球场上的裁判员中最年轻的一个。Reggae must be the only music that's got its own country — Jamaica...雷盖音乐得到了一整个国家人民的支持，这个国家就是牙买加——这一点上它无疑是独一无二的。I'm sure he must feel he has lost a close family friend, because I know I do...我敢说他一定觉得自己失去了一位亲密的世交，因为我知道我是这种感觉。I must have been a bore.我一定让人觉得很无聊。4[MODAL	情态动词](用于表示据已知情况推测)很可能是，想必是，肯定是 You use must, or must have with a past participle, to indicate that you believe that something is the case, because of the available evidence. 'You must be Emma,' said the visitor...来客说：“你肯定是埃玛。”Miss Holloway had a weak heart. She must have had a heart attack...霍洛韦小姐心脏不好，她肯定得过心脏病。His only explanation was that he must have brought them home in order to continue his work...他唯一的解释是，自己想必是为了继续工作而把它们带回家了。The medical reports really must have suggested that he was really seriously hurt.医学报告肯定已经指出他伤得的确很重。5[MODAL	情态动词](用于表示前者为后者的前提)应该已经(发生) If you say that one thing must have happened in order for something else to happen, you mean that it is necessary for the first thing to have happened before the second thing can happen. In order to take that job, you must have left another job...为得到那份工作，你肯定已辞去了另一份工作。In order to start reading this book you must have had some idea that the physical symptoms you were experiencing were due to anxiety.开始读这本书之前，你一定已经了解到：你身体的不适症状是源于焦虑。6[MODAL	情态动词](用于表示意图)一定要，坚持要 You use must to express your intention to do something. I must be getting back...我一定要回来。I must have a whiskey...我要喝杯威士忌。I must telephone my parents...我一定要给父母打电话。I must speak to Tania at once...我要马上跟塔尼娅讲话。He told the Prime Minister that he felt he must now leave.他告诉首相，他感觉自己现在必须要离开了。7[MODAL	情态动词](用于表示建议或邀请)务必，一定要 You use must to make suggestions or invitations very forcefully. You must see a doctor, Frederick...弗雷德里克，你一定得去看医生。You must see the painting Paul has given me as a wedding present...你一定要看看保罗送给我作结婚礼物的那幅画。You must come to lunch with us...你一定要来和我们一起吃午饭。You must visit me. Come to dinner.你一定要来我家吃晚饭。8[MODAL	情态动词](用于表示同情)必定，想必 You use must in remarks and comments where you are expressing sympathy. This must be a very difficult job for you...对你来说，这份工作想必很难。You must be very worried by now...你现在一定非常担心。Now sit down and make yourself comfortable. You must be very tired.现在坐下来，让自己舒服些，你一定很累了。9[MODAL	情态动词](用于强调)我得说/我得承认 You use must in conversation in expressions such as 'I must say' and 'I must admit' in order to emphasize a point that you are making.   [emphasis]This came as a surprise, I must say...我得说这真是个意外。I must admit I like looking feminine...我得承认我喜欢看起来淑女一些。They were very polite, I must confess.我得承认他们很有礼貌。10[MODAL	情态动词](用于引起读者或听众的注意)一定要注意/一定记住 You use must in expressions such as 'it must be noted' and 'it must be remembered' in order to draw the reader's or listener's attention to what you are about to say. It must be noted, however, that not all British and American officers carried out orders...然而，一定要注意不是所有的英国和美国军官都执行了命令。It must be stated that this illness is one of the most complex conditions known to man.必须声明，这种疾病是人类已知的最为复杂的疾病之一。11[MODAL	情态动词](用于问句中表示生气)偏偏，非要 You use must in questions to express your anger or irritation about something that someone has done, usually because you do not understand their behaviour.   [feelings]	Why must you do everything as if you have to win?...你为什么做每件事情都跟你非要赢似的？Why must she inter-rupt?...她为什么非要插嘴？Must you always run when the pressure gets too much?难道压力一大你就非要逃开吗？12[MODAL	情态动词](用于感叹句，表示惊讶或震惊)一定是，准是 You use must in exclamations to express surprise or shock.   [emphasis]'Go! Please go.' — 'You must be joking!'...“走吧！请走吧。”——“你一定是在开玩笑吧！”I really must be quite mad!...真的，我一定是气坏了！You must have gone out of your mind!你准是疯了！13[N-COUNT	可数名词]必不可少的事物；一定要做的事 If you refer to something as a must, you mean that it is absolutely necessary.   [usu a N in sing]  [INFORMAL 非正式]The new 37th issue of National Savings Certificates is a must for any taxpayer...新发行的第37期国家储蓄债券是任何一个纳税人的必然之选。A must is a visit to the fascinating and world-renowned Motor Museum.一定要去参观一下那个举世闻名且精彩有趣的汽车博物馆。14[PHRASE	短语]如果你一定要(这样做的话) You say 'if you must' when you know that you cannot stop someone doing something that you think is wrong or stupid.   [usu PHR inf]If you must be in the sunlight, use the strongest filter cream you can get...如果一定要呆在太阳底下的话，就擦上你能买到的防晒系数最高的防晒霜。'Could I have a word?' — 'Oh dear, if you must.'...“我能说一句吗？”——“亲爱的，如果你非说不可的话，好吧。”If you must have a cigarette, choose a seat in the first row of the smoking section.如果你一定要吸烟的话，去吸烟区的第一排找个座位。15[PHRASE	短语]如果你一定想要知道的话 You say 'if you must know' when you tell someone something that you did not want them to know and you want to suggest that you think they were wrong to  ask you about it.   [PHR with cl]'Why don't you wear your jogging shorts Mum?' — 'Well, my legs are too skinny, if you must know.'“妈妈，为什么不穿你的慢跑短裤呢？”——“哦，如果你非要问的话，因为我的腿太瘦了。”'You told him you'd been there that night.' — 'If you must know, yes.'“你跟他说过你那天夜里去过那儿了。”——“是的，如果你非要问的话。” must1 modal verbmust2 nounmustmust1 /məst; strong mʌst/ ●●● S1 W1 modal verb (negative short form mustn’t)  Word Origin Examples Thesaurus Collocations Phrases 1 (past tense had to) to have to do something because it is necessary or important, or because of a law or order → have to, oblige:  All passengers must wear seat belts. It’s getting late. I really must go. You must work hard. We must all be patient. Must I pay now? For the engine to work, the green lever must be in the ‘up’ position. Accidents must be reported to the safety officer.RegisterIn everyday English, people usually say someone has to or has got to do something rather than say they must do something, which can sound slightly formal or emphatic:· Everyone has to wear a seat belt.· I‘ve got to go at four o’clock.· Do I have to pay now?2used in negative sentences to say that something should not happen, because of a rule or law or because of the situation:  You mustn’t talk to your mother like that. This book must not be removed from the library. We must never forget how much we owe to these brave men. No one must disturb him while he’s sleeping.3used to say you think something is very likely to be true or very likely to have happened:  Sam must be nearly 90 years old now. His new car must have cost around £20,000. You must have been really upset. There must be something wrong with the engine. Karl must’ve seen ‘Star Wars’ six or seven times.4 spoken used to suggest that someone should do something, especially because you think they will enjoy it or you think it is a good idea:  You must come and stay with us in London sometime. ‘We must do this again,’ he said. ‘I’ve enjoyed it thoroughly.’5especially British English spoken used to say that you intend or want to do something:  I must call her tonight.6I must admit/say/confess spoken used to emphasize what you are saying:  I must say, it gave me quite a shock.7(why) must you ...? spoken used to tell someone that their behaviour upsets or annoys you:  Must you spoil everything? Why must you always be so suspicious?8a must-have/must-see/must-read etc informal something that is so good, exciting, or interesting that you think people should have it, see it etc:  The exhibit is a must-see for anyone interested in Japanese art. a must-read novel9if you must (do something) spoken used to tell someone that they are allowed to do something, but that you do not approve of it or agree with it:  All right, come along, if you must. If you must smoke, please go outside.10if you must know spoken used when you answer a question that you think someone should not have asked, because it is slightly impolite:  Well, if you must know, I’m thirty-six. → you must be jokingat joke2(2)GRAMMAR: Comparisonmust• You say that you must do something: · I must get a new key.• Don’t use ‘to’ after must. ✗Don’t say:  I must to get a new key.• You use must not when saying someone should not do something, for example because it is dangerous or wrong: · You must not leave without telling me where you’re going.• You say that something must have happened, or that someone must have done something, when you are fairly sure that this is true, based on what you know: · They must have caught an earlier train.have to• You say that you have to do something: · She has to do some shopping.• You use don’t have to when it is not necessary for someone to do something: · You don’t have to leave yet.• You use had to instead of ‘must’ when talking about the past: · He had to get up early the next day.Grammar guide ‒ VERBSTHESAURUSmust do something used when saying that it is very important that someone does something, because someone in authority or a rule says this, or because of the situation: · You must be home by midnight.· He must not smoke in here.· I must remember to call her.have to do something to need to do something because it is necessary or important: · I have to go home early.· She has to talk to him first.be obliged to do something to have to do something, because of a rule or law, or because of the situation you are in: · Members of parliament are obliged to declare all their financial interests.· He was obliged to admit defeat.be required to do something formal to have to do something because of a rule or law – used especially in written notices and official documents: · New students are required to register with a doctor.have an obligation to do something (also be under an obligation to do something) to have to do something because it is the duty of someone in your position to do it, or because you have officially agreed to do it: · The landlord is under an obligation to keep the building in good repair.be forced/compelled to do something to have to do something that you do not want to do, because you are in a situation that makes it impossible to avoid: · She was forced to retire early due to ill health.must1 modal verbmust2 nounmustmust2 /mʌst/ noun [countable usually singular]  Word Origin Examples Thesaurus Collocations Phrases  something that you must do or must have:  Warm clothes are a must in the mountains.

Accepted Answer

jEPoK/1xFvkT+4I2iOf8ERf6bYphjAgat9a+hKrSWN4ChAeSZLj/xJBCo6/a1i3idiGaQUYvRB2+2py5L5GIOKX1K7dJB+43HaHwFXmdCdleJisDAe45QxfVpOxNzJvQFk1LTOppLP9nx9sFbqS2XVK9AG4QPwyCvdAEeMPxNJV6rA4kKG7jV1S4z1XKFjoFTuuzNM46FqoUDW49ETV60w==             must              ★                              modal verb                ,                  noun                            must      musts                            modal verb                                        /      məst            ;        NAmE            məst            /              /      strong form      mʌst            strong form      mʌst            /              (              negative        must not            ,              short form        mustn't                  /          ˈmʌsnt                    ;            NAmE                    ˈmʌsnt                    /                    )              1      ★              used to say that sth is necessary or very important (sometimes involving a rule or a law)          （表示必要或很重要）必须                            ◆        All visitors must report to reception.        所有来宾必须到接待处报到。                    ◆        Cars must not park in front of the entrance          (= it is not allowed).                车辆不得停在入口处。                    ◆        (          formal)                I must ask you not to do that again.        我得劝你别再那样做了。                    ◆        You mustn't say things like that.        你千万别说那样的话。                    ◆        I must go to the bank and get some money.        我得上银行取点儿钱。                    ◆                  I must admit          (= I feel that I should admit)I was surprised it cost so little.                我得承认，这么便宜，真让我惊讶。                    ◆        (          especially BrE)                Must you always question everything I say?          (= it is annoying)                我说什么你都非要提出质疑吗？                    ◆        ‘Do we have to finish this today?’ ‘Yes, you must.’        “我们今天一定得完成这工作吗？”“对，必须完成。”                              HELP         Note that the negative for the last example is                  ◆          ‘No, you don't have to.’                注意最后这个示例的否定式是 No, you don't have to。                    2      ★              used to say that sth is likely or logical          （表示很可能或符合逻辑）一定                            ◆        You must be hungry after all that walking.        走了这么远的路，你一定饿了吧。                    ◆        He must have known          (= surely he knew)what she wanted.                他一定早已知道她想要什么了。                    ◆        I'm sorry, she's not here. She must have left already          (= that must be the explanation).                抱歉，她不在这儿。准是走了。                    3      ★              (          especially BrE)                used to recommend that sb does sth because you think it is a good idea          （提出建议）应该，得                            ◆        You simply must read this book.        这本书你可一定要看一看。                    ◆        We must get together soon for lunch.        我们得马上会合去吃午饭。                    ☞note at                                            modal                                                  IDIOMS              if you ˈmust (do sth)                              used to say that sb may do sth but you do not really want them to              （表示虽不赞同但可允许）如果你一定要（那么做）                                            ◆            ‘Can I smoke?’ ‘If you must.’            “我可以抽烟吗？”“好吧，如果你非要的话。”                                ◆            It's from my boyfriend,              if you must know.                        倘使你一定要知道的话，这是我男朋友给的。                                      must-see/must-read/must-have, etc.                              used to tell people that sth is so good or interesting that they should see, read, get it, etc.              必看（或必读、必备等）                                            ◆            Sydney is one of the world's must-see cities.            悉尼是世界上的必游城市之一。                                ◆            The magazine is a must-read in the show business world.            这份杂志是演艺界人士的必读刊物。                                      ☞more at                                    need                                   n.                                  noun                    /      mʌst            ;        NAmE            mʌst            /              [usually singular      ]              (        informal)            something that you must do, see, buy, etc.        必须做（或看、买等）的事                    ◆      His new novel is a must for all lovers of crime fiction.      他的新作是所有犯罪小说爱好者的必读书。                  GRAMMAR POINT 语法说明                                      must / have (got) to / must not / don’t have to          Necessity and Obligation            必要和义务                                ■                          Mustand              have (got) toare used in the present to say that something is necessary or should be done.              Have tois more common in              NAmE,especially in speech.                              *must 和 have (got) to 用于现在时，表示某事有必要或应该做。have to 较常用于美式英语，尤其是口语中：                                                    ◆              You must be home by 11 o’clock.              你必须在 11 点之前回家。                                                  ◆              I must wash the car tomorrow.              我明天必须冲洗汽车。                                                  ◆              I have to collect the children from school at 3 o’clock.              我得在 3 点钟到学校接孩子。                                                  ◆              Nurses have to wear a uniform.              护士必须穿制服。                                            ■            In              BrEthere is a difference between them.              Mustis used to talk about what the speaker or listener wants, and              have (got) toabout rules, laws and other people’s wishes.              在英式英语中，两词之间有差异。must 是基于说话者或听话者的主观意愿，have (got) to 关乎规定、法律和他人的愿望：                                      ◆              I must finish this essay today. I'm going out tomorrow.              我今天一定要完成这篇论文，因为我明天要出去。                                                  ◆              I have to finish this essay today. We have to hand them in tomorrow.              我今天得完成这篇论文，因为我们明天必须交。                                            ■            There are no past or future forms of              must.To talk about the past you use              had toand              has had to.                              *must 无过去或将来形式。表示过去用 had to 和 has had to：                                                    ◆              I had to wait half an hour for a bus.              我得等半小时的公共汽车。                                      Will have tois used to talk about the future, or              have toif an arrangement has already been made.              说将来的事用 will have to，如果已作好安排亦可用 have to：                                      ◆              We’ll have to borrow the money we need.              我们需要的这笔钱只好去借了。                                                  ◆              I have to go to the dentist tomorrow.              我明天得去看牙医。                                            ■            Questions with              have toare formed using              do.              带有 have to 的疑问句由 do 构成：                                      ◆              Do the children have to wear a uniform?              孩子们必须穿制服吗？                        In negative sentences both              must notand              don’t have toare used, but with different meanings.              Must notis used to tell somebody not to do something.              在否定句中，用 must not 和 don't have to，但二者含义不同。must not 用于告诉某人不要做某事：                                      ◆              Passengers must not smoke until the signs have been switched off.              指示灯未熄灭之前乘客不许抽烟。                        The short form              mustn’tis used especially in              BrE.              简约式 mustn't 尤用于英式英语：                                      ◆              You mustn’t leave the gate open.              你一定不要让大门敞开着。                                      Don’t have tois used when it is not necessary to do something.              表示没有必要做某事用 don't have to：                                      ◆              You don’t have to pay for the tickets in advance.              你不必预付票款。                                                  ◆              She doesn’t have to work at weekends.              她周末不用上班。                                            ➱ note at              need                                Certainty            肯定                                ■            Both              mustand              have toare used to say that you are certain about something.              Have tois the usual verb used in              NAmEand this is becoming more frequent in              BrEin this meaning.              表示肯定用 must 和 have to 均可。have to 通常用于美式英语中，在英式英语中也越来越常用于此义：                                      ◆              He has (got) to be the worst actor on TV!              他无疑是最糟糕的电视演员！                        (              BrE)                                      ◆              This must be the most boring party I’ve ever been to.              这无疑是我参加过的最无聊的聚会。                        If you are talking about the past, use              must have.              说过去的事用 must have：                                      ◆              Your trip must have been fun!              你这次旅行一定很开心吧！                                                      must              /        məst                ;          NAmE                məst                /                    mustn't              /        ˈmʌsnt                ;          NAmE                ˈmʌsnt                /             must[məst]CET4CET6TEM4考研n139249588238463256119v2231824422100142702342232737457142VERB1737221878NOUN4979189265Spoken:128655388必须(90%)，应当(4%)，很可能(2%)，必须做的事(2%)，发霉(1%)，未发酵的葡萄汁(1%)aux.必须，一定；可以，应当；很可能n.绝对必要的事物；未发酵葡萄汁n.(Must)人名；(匈)穆什特；(俄、瑞典)穆斯特

word	must
content	jEPoK/1xFvkT+4I2iOf8ERf6bYphjAgat9a+hKrSWN4ChAeSZLj/xJBCo6/a1i3idiGaQUYvRB2+2py5L5GIOKX1K7dJB+43HaHwFXmdCdleJisDAe45QxfVpOxNzJvQFk1LTOppLP9nx9sFbqS2XVK9AG4QPwyCvdAEeMPxNJV6rA4kKG7jV1S4z1XKFjoFTuuzNM46FqoUDW49ETV60w==
Collins	must ★★★★★ /məst, STRONG mʌst/ Must is a modal verb. It is followed by the base form of a verb. must为情态动词，后跟动词原形。 The noun is pronounced /mʌst/. 名词读作 /mʌst/。 1 [MODAL 情态动词]必须；一定要 You use must to indicate that you think it is very important or necessary for something to happen. You use must not or mustn't to indicate that you think it is very important or necessary for something not to happen. What you wear should be stylish and clean, and must definitely fit well... 你的穿着应该整洁漂亮，而且必须非常合身。 You are going to have to take a certain amount of criticism, but you must cope with it... 你肯定会遭到一些批评，但你必须去面对。 The doctor must not allow the patient to be put at risk... 医生决不能置患者于危险境地而不顾。 The soil must not be overwatered, especially during the first few weeks... 切忌土壤过涝，尤其在最初几周。 We must not forget your birthday. 我们一定不能忘了你的生日。 2 [MODAL 情态动词](通常因为规定或法律)必须，应当 You use must to indicate that it is necessary for something to happen, usually because of a rule or law. Candidates must satisfy the general conditions for admission... 候选人必须满足参选的总体条件。 Mr Allen must pay Mr Farnham's legal costs... 艾伦先生应当支付法纳姆先生的诉讼费。 Equipment must be supervised if children are in the house. 如果孩子们在屋里，必须有人监管设备。 3 [MODAL 情态动词](用于表示肯定推测)一定，谅必 You use must to indicate that you are fairly sure that something is the case. At 29 Russell must be one of the youngest ever Wembley referees... 29岁的拉赛尔一定是有史以来温布利球场上的裁判员中最年轻的一个。 Reggae must be the only music that's got its own country — Jamaica... 雷盖音乐得到了一整个国家人民的支持，这个国家就是牙买加——这一点上它无疑是独一无二的。 I'm sure he must feel he has lost a close family friend, because I know I do... 我敢说他一定觉得自己失去了一位亲密的世交，因为我知道我是这种感觉。 I must have been a bore. 我一定让人觉得很无聊。 4 [MODAL 情态动词](用于表示据已知情况推测)很可能是，想必是，肯定是 You use must, or must have with a past participle, to indicate that you believe that something is the case, because of the available evidence. 'You must be Emma,' said the visitor... 来客说：“你肯定是埃玛。” Miss Holloway had a weak heart. She must have had a heart attack... 霍洛韦小姐心脏不好，她肯定得过心脏病。 His only explanation was that he must have brought them home in order to continue his work... 他唯一的解释是，自己想必是为了继续工作而把它们带回家了。 The medical reports really must have suggested that he was really seriously hurt. 医学报告肯定已经指出他伤得的确很重。 5 [MODAL 情态动词](用于表示前者为后者的前提)应该已经(发生) If you say that one thing must have happened in order for something else to happen, you mean that it is necessary for the first thing to have happened before the second thing can happen. In order to take that job, you must have left another job... 为得到那份工作，你肯定已辞去了另一份工作。 In order to start reading this book you must have had some idea that the physical symptoms you were experiencing were due to anxiety. 开始读这本书之前，你一定已经了解到：你身体的不适症状是源于焦虑。 6 [MODAL 情态动词](用于表示意图)一定要，坚持要 You use must to express your intention to do something. I must be getting back... 我一定要回来。 I must have a whiskey... 我要喝杯威士忌。 I must telephone my parents... 我一定要给父母打电话。 I must speak to Tania at once... 我要马上跟塔尼娅讲话。 He told the Prime Minister that he felt he must now leave. 他告诉首相，他感觉自己现在必须要离开了。 7 [MODAL 情态动词](用于表示建议或邀请)务必，一定要 You use must to make suggestions or invitations very forcefully. You must see a doctor, Frederick... 弗雷德里克，你一定得去看医生。 You must see the painting Paul has given me as a wedding present... 你一定要看看保罗送给我作结婚礼物的那幅画。 You must come to lunch with us... 你一定要来和我们一起吃午饭。 You must visit me. Come to dinner. 你一定要来我家吃晚饭。 8 [MODAL 情态动词](用于表示同情)必定，想必 You use must in remarks and comments where you are expressing sympathy. This must be a very difficult job for you... 对你来说，这份工作想必很难。 You must be very worried by now... 你现在一定非常担心。 Now sit down and make yourself comfortable. You must be very tired. 现在坐下来，让自己舒服些，你一定很累了。 9 [MODAL 情态动词](用于强调)我得说/我得承认 You use must in conversation in expressions such as 'I must say' and 'I must admit' in order to emphasize a point that you are making. [emphasis] This came as a surprise, I must say... 我得说这真是个意外。 I must admit I like looking feminine... 我得承认我喜欢看起来淑女一些。 They were very polite, I must confess. 我得承认他们很有礼貌。 10 [MODAL 情态动词](用于引起读者或听众的注意)一定要注意/一定记住 You use must in expressions such as 'it must be noted' and 'it must be remembered' in order to draw the reader's or listener's attention to what you are about to say. It must be noted, however, that not all British and American officers carried out orders... 然而，一定要注意不是所有的英国和美国军官都执行了命令。 It must be stated that this illness is one of the most complex conditions known to man. 必须声明，这种疾病是人类已知的最为复杂的疾病之一。 11 [MODAL 情态动词](用于问句中表示生气)偏偏，非要 You use must in questions to express your anger or irritation about something that someone has done, usually because you do not understand their behaviour. [feelings] Why must you do everything as if you have to win?... 你为什么做每件事情都跟你非要赢似的？ Why must she inter-rupt?... 她为什么非要插嘴？ Must you always run when the pressure gets too much? 难道压力一大你就非要逃开吗？ 12 [MODAL 情态动词](用于感叹句，表示惊讶或震惊)一定是，准是 You use must in exclamations to express surprise or shock. [emphasis] 'Go! Please go.' — 'You must be joking!'... “走吧！请走吧。”——“你一定是在开玩笑吧！” I really must be quite mad!... 真的，我一定是气坏了！ You must have gone out of your mind! 你准是疯了！ 13 [N-COUNT 可数名词]必不可少的事物；一定要做的事 If you refer to something as a must, you mean that it is absolutely necessary. [usu a N in sing] [INFORMAL 非正式] The new 37th issue of National Savings Certificates is a must for any taxpayer... 新发行的第37期国家储蓄债券是任何一个纳税人的必然之选。 A must is a visit to the fascinating and world-renowned Motor Museum. 一定要去参观一下那个举世闻名且精彩有趣的汽车博物馆。 14 [PHRASE 短语]如果你一定要(这样做的话) You say 'if you must' when you know that you cannot stop someone doing something that you think is wrong or stupid. [usu PHR inf] If you must be in the sunlight, use the strongest filter cream you can get... 如果一定要呆在太阳底下的话，就擦上你能买到的防晒系数最高的防晒霜。 'Could I have a word?' — 'Oh dear, if you must.'... “我能说一句吗？”——“亲爱的，如果你非说不可的话，好吧。” If you must have a cigarette, choose a seat in the first row of the smoking section. 如果你一定要吸烟的话，去吸烟区的第一排找个座位。 15 [PHRASE 短语]如果你一定想要知道的话 You say 'if you must know' when you tell someone something that you did not want them to know and you want to suggest that you think they were wrong to ask you about it. [PHR with cl] 'Why don't you wear your jogging shorts Mum?' — 'Well, my legs are too skinny, if you must know.' “妈妈，为什么不穿你的慢跑短裤呢？”——“哦，如果你非要问的话，因为我的腿太瘦了。” 'You told him you'd been there that night.' — 'If you must know, yes.' “你跟他说过你那天夜里去过那儿了。”——“是的，如果你非要问的话。”
Oxford	must ★ modal verb , noun must musts modal verb / məst ; NAmE məst / / strong form mʌst strong form mʌst / ( negative must not , short form mustn't / ˈmʌsnt ; NAmE ˈmʌsnt / ) 1 ★ used to say that sth is necessary or very important (sometimes involving a rule or a law) （表示必要或很重要）必须 ◆ All visitors must report to reception. 所有来宾必须到接待处报到。 ◆ Cars must not park in front of the entrance (= it is not allowed). 车辆不得停在入口处。 ◆ ( formal) I must ask you not to do that again. 我得劝你别再那样做了。 ◆ You mustn't say things like that. 你千万别说那样的话。 ◆ I must go to the bank and get some money. 我得上银行取点儿钱。 ◆ I must admit (= I feel that I should admit)I was surprised it cost so little. 我得承认，这么便宜，真让我惊讶。 ◆ ( especially BrE) Must you always question everything I say? (= it is annoying) 我说什么你都非要提出质疑吗？ ◆ ‘Do we have to finish this today?’ ‘Yes, you must.’ “我们今天一定得完成这工作吗？”“对，必须完成。” HELP Note that the negative for the last example is ◆ ‘No, you don't have to.’ 注意最后这个示例的否定式是 No, you don't have to。 2 ★ used to say that sth is likely or logical （表示很可能或符合逻辑）一定 ◆ You must be hungry after all that walking. 走了这么远的路，你一定饿了吧。 ◆ He must have known (= surely he knew)what she wanted. 他一定早已知道她想要什么了。 ◆ I'm sorry, she's not here. She must have left already (= that must be the explanation). 抱歉，她不在这儿。准是走了。 3 ★ ( especially BrE) used to recommend that sb does sth because you think it is a good idea （提出建议）应该，得 ◆ You simply must read this book. 这本书你可一定要看一看。 ◆ We must get together soon for lunch. 我们得马上会合去吃午饭。 ☞note at modal IDIOMS if you ˈmust (do sth) used to say that sb may do sth but you do not really want them to （表示虽不赞同但可允许）如果你一定要（那么做） ◆ ‘Can I smoke?’ ‘If you must.’ “我可以抽烟吗？”“好吧，如果你非要的话。” ◆ It's from my boyfriend, if you must know. 倘使你一定要知道的话，这是我男朋友给的。 must-see/must-read/must-have, etc. used to tell people that sth is so good or interesting that they should see, read, get it, etc. 必看（或必读、必备等） ◆ Sydney is one of the world's must-see cities. 悉尼是世界上的必游城市之一。 ◆ The magazine is a must-read in the show business world. 这份杂志是演艺界人士的必读刊物。 ☞more at need n. noun / mʌst ; NAmE mʌst / [usually singular ] ( informal) something that you must do, see, buy, etc. 必须做（或看、买等）的事 ◆ His new novel is a must for all lovers of crime fiction. 他的新作是所有犯罪小说爱好者的必读书。 GRAMMAR POINT 语法说明 must / have (got) to / must not / don’t have to Necessity and Obligation 必要和义务 ■ Mustand have (got) toare used in the present to say that something is necessary or should be done. Have tois more common in NAmE,especially in speech. must 和 have (got) to 用于现在时，表示某事有必要或应该做。have to 较常用于美式英语，尤其是口语中： ◆ You must be home by 11 o’clock. 你必须在 11 点之前回家。 ◆ I must wash the car tomorrow. 我明天必须冲洗汽车。 ◆ I have to collect the children from school at 3 o’clock. 我得在 3 点钟到学校接孩子。 ◆ Nurses have to wear a uniform. 护士必须穿制服。 ■ In BrEthere is a difference between them. Mustis used to talk about what the speaker or listener wants, and have (got) toabout rules, laws and other people’s wishes. 在英式英语中，两词之间有差异。must 是基于说话者或听话者的主观意愿，have (got) to 关乎规定、法律和他人的愿望： ◆ I must finish this essay today. I'm going out tomorrow. 我今天一定要完成这篇论文，因为我明天要出去。 ◆ I have to finish this essay today. We have to hand them in tomorrow. 我今天得完成这篇论文，因为我们明天必须交。 ■ There are no past or future forms of must.To talk about the past you use had toand has had to. must 无过去或将来形式。表示过去用 had to 和 has had to： ◆ I had to wait half an hour for a bus. 我得等半小时的公共汽车。 Will have tois used to talk about the future, or have toif an arrangement has already been made. 说将来的事用 will have to，如果已作好安排亦可用 have to： ◆ We’ll have to borrow the money we need. 我们需要的这笔钱只好去借了。 ◆ I have to go to the dentist tomorrow. 我明天得去看牙医。 ■ Questions with have toare formed using do. 带有 have to 的疑问句由 do 构成： ◆ Do the children have to wear a uniform? 孩子们必须穿制服吗？ In negative sentences both must notand don’t have toare used, but with different meanings. Must notis used to tell somebody not to do something. 在否定句中，用 must not 和 don't have to，但二者含义不同。must not 用于告诉某人不要做某事： ◆ Passengers must not smoke until the signs have been switched off. 指示灯未熄灭之前乘客不许抽烟。 The short form mustn’tis used especially in BrE. 简约式 mustn't 尤用于英式英语： ◆ You mustn’t leave the gate open. 你一定不要让大门敞开着。 Don’t have tois used when it is not necessary to do something. 表示没有必要做某事用 don't have to： ◆ You don’t have to pay for the tickets in advance. 你不必预付票款。 ◆ She doesn’t have to work at weekends. 她周末不用上班。 ➱ note at need Certainty 肯定 ■ Both mustand have toare used to say that you are certain about something. Have tois the usual verb used in NAmEand this is becoming more frequent in BrEin this meaning. 表示肯定用 must 和 have to 均可。have to 通常用于美式英语中，在英式英语中也越来越常用于此义： ◆ He has (got) to be the worst actor on TV! 他无疑是最糟糕的电视演员！ ( BrE) ◆ This must be the most boring party I’ve ever been to. 这无疑是我参加过的最无聊的聚会。 If you are talking about the past, use must have. 说过去的事用 must have： ◆ Your trip must have been fun! 你这次旅行一定很开心吧！ must / məst ; NAmE məst / mustn't / ˈmʌsnt ; NAmE ˈmʌsnt /
LDC	must1 modal verb must2 noun mustmust1 /məst; strong mʌst/ ●●● S1 W1 modal verb (negative short form mustn’t) Word Origin Examples Thesaurus Collocations Phrases 1 (past tense had to) to have to do something because it is necessary or important, or because of a law or order → have to, oblige: All passengers must wear seat belts. It’s getting late. I really must go. You must work hard. We must all be patient. Must I pay now? For the engine to work, the green lever must be in the ‘up’ position. Accidents must be reported to the safety officer.RegisterIn everyday English, people usually say someone has to or has got to do something rather than say they must do something, which can sound slightly formal or emphatic:· Everyone has to wear a seat belt.· I‘ve got to go at four o’clock.· Do I have to pay now?2used in negative sentences to say that something should not happen, because of a rule or law or because of the situation: You mustn’t talk to your mother like that. This book must not be removed from the library. We must never forget how much we owe to these brave men. No one must disturb him while he’s sleeping.3used to say you think something is very likely to be true or very likely to have happened: Sam must be nearly 90 years old now. His new car must have cost around £20,000. You must have been really upset. There must be something wrong with the engine. Karl must’ve seen ‘Star Wars’ six or seven times.4 spoken used to suggest that someone should do something, especially because you think they will enjoy it or you think it is a good idea: You must come and stay with us in London sometime. ‘We must do this again,’ he said. ‘I’ve enjoyed it thoroughly.’5especially British English spoken used to say that you intend or want to do something: I must call her tonight.6I must admit/say/confess spoken used to emphasize what you are saying: I must say, it gave me quite a shock.7(why) must you ...? spoken used to tell someone that their behaviour upsets or annoys you: Must you spoil everything? Why must you always be so suspicious?8a must-have/must-see/must-read etc informal something that is so good, exciting, or interesting that you think people should have it, see it etc: The exhibit is a must-see for anyone interested in Japanese art. a must-read novel9if you must (do something) spoken used to tell someone that they are allowed to do something, but that you do not approve of it or agree with it: All right, come along, if you must. If you must smoke, please go outside.10if you must know spoken used when you answer a question that you think someone should not have asked, because it is slightly impolite: Well, if you must know, I’m thirty-six. → you must be joking at joke2(2) GRAMMAR: Comparisonmust• You say that you must do something: · I must get a new key.• Don’t use ‘to’ after must. ✗Don’t say: I must to get a new key.• You use must not when saying someone should not do something, for example because it is dangerous or wrong: · You must not leave without telling me where you’re going.• You say that something must have happened, or that someone must have done something, when you are fairly sure that this is true, based on what you know: · They must have caught an earlier train.have to• You say that you have to do something: · She has to do some shopping.• You use don’t have to when it is not necessary for someone to do something: · You don’t have to leave yet.• You use had to instead of ‘must’ when talking about the past: · He had to get up early the next day.Grammar guide ‒ VERBSTHESAURUSmust do something used when saying that it is very important that someone does something, because someone in authority or a rule says this, or because of the situation: · You must be home by midnight.· He must not smoke in here.· I must remember to call her.have to do something to need to do something because it is necessary or important: · I have to go home early.· She has to talk to him first.be obliged to do something to have to do something, because of a rule or law, or because of the situation you are in: · Members of parliament are obliged to declare all their financial interests.· He was obliged to admit defeat.be required to do something formal to have to do something because of a rule or law – used especially in written notices and official documents: · New students are required to register with a doctor.have an obligation to do something (also be under an obligation to do something) to have to do something because it is the duty of someone in your position to do it, or because you have officially agreed to do it: · The landlord is under an obligation to keep the building in good repair.be forced/compelled to do something to have to do something that you do not want to do, because you are in a situation that makes it impossible to avoid: · She was forced to retire early due to ill health. must1 modal verb must2 noun mustmust2 /mʌst/ noun [countable usually singular] Word Origin Examples Thesaurus Collocations Phrases something that you must do or must have: Warm clothes are a must in the mountains.
WDF	must [məst] CET4CET6TEM4考研 n13924 958 82 38 463 256 119 v223 182442 21001 42702 34223 27374 57142 VERB173 7221878 NOUN4979 189265 Spoken: 128655388 必须(90%)，应当(4%)，很可能(2%)，必须做的事(2%)，发霉(1%)，未发酵的葡萄汁(1%) aux.必须，一定；可以，应当；很可能 n.绝对必要的事物；未发酵葡萄汁 n.(Must)人名；(匈)穆什特；(俄、瑞典)穆斯特

I Modal 情态动词 Don’t Order Form Wear Rule

must

Spoken: