Tra từ must - Từ điển LongMan Dictionary

I. modal verb
COLLOCATIONS FROM OTHER ENTRIES
I (have to/must) confess (=used when admitting something you feel slightly embarrassed about)
▪ I must confess I don’t visit my parents as often as I should.
I must admit sth (=used when saying that you admit that something is true)
▪ I must admit I hate camping.
If you must know (=used when you are angry because someone wants to know something)
▪ If you must know, I was with James last night .
must be mad
▪ He can’t possibly get that finished in time. He must be mad!
must have dreamt it
▪ I was sure I posted the letter but I must have dreamt it.
must obey/have to obey
▪ She felt she had to obey her father, even though she thought he was wrong.
there must be some mistake (=used when you think someone has made a mistake)
▪ There must be some mistake. I definitely booked a room for tonight.
there must be some misunderstanding (=used when you think someone has not understood something correctly)
▪ I think there must be some misunderstanding - I don’t know anyone called Barry.
PHRASES FROM OTHER ENTRIES
(I) must dash/(I) have to dash
(I) must fly
▪ As a scheduled operator, Virgin must fly its 400-seat jumbos even if there are only a handful of passengers on board.
▪ He is expected eventually to rule that the Union flag must fly, and he called the row unnecessary.
▪ If Jerba was picturesque, Nefta is magical and I regret that I must fly home in a week.
▪ Second, it must fly swiftly away from the nest and alight some distance from it.
▪ To keep your pilot's licence you must fly 5 hours each year minimum.
▪ What is more, it is able to tell others what direction they must fly in order to get food themselves.
▪ With me on his back he must fly down to the Gruncher.
I must say
▪ And first I must say why I need to make this digression.
▪ And I must say, on what I see, your methods seem to work well.
▪ I was pleased to find out, I must say.
▪ Tell me more of it ... I must say my thoughts to you.
▪ The first day of my trip is now completed, and all in all, I must say I am quite satisfied.
▪ Though, I must say, mediocrity never looked better.
▪ When I did find out what he was thinking, I must say I was surprised.
I must/I'd better be getting along
must/should etc be pushing along
needs must (when the devil drives)
sth must not go any further
you're joking/you must be joking
you've made your bed and you must lie on it
EXAMPLES FROM OTHER ENTRIES
▪ Cox must have forgotten all about our appointment.
▪ Elsa must be furious with her.
▪ I must stop by sometime and thank her for all her help.
▪ Identification must be carried at all times.
▪ Production costs must not exceed $400,000.
▪ The $55 passport fee must accompany your application.
▪ The plants must need watering by now.
▪ This stereo must have cost a lot of money.
▪ We must make every effort towards peace.
▪ You must come and visit us in Houston.
EXAMPLES FROM CORPUS
▪ And he must eat some salad.
▪ As a prior step, however, we must look at the second general form of political behavior, political actions.
▪ Certainly it must help them locate a mate and induce a feeling of social togetherness.
▪ I must thank Gene for showing me his method of flashing.
▪ Poor Madame, I thought, how deeply she must resent my usurping her place.
▪ The capital asset of the farms had little importance for most yet in some areas the value must have been substantial.
▪ The longer-term affect of television on the House must await further research.
▪ To create these things, we must begin by remembering that we are all in this together.
II. noun
COLLOCATIONS FROM CORPUS
ADJECTIVE
absolute
▪ The cricket world cup is an absolute must.
▪ A small set of binoculars are useful for this work and polarising sunglasses are an absolute must.
EXAMPLES FROM OTHER ENTRIES
▪ Goggles are a must for skiing while it's snowing.
EXAMPLES FROM CORPUS
▪ Another must is the excursion to Hallstatt and Gosau, two of the most beautiful spots in the Salzkammergut.
▪ But, before leaving the Thatcher phenomenon, a glance at the Falklands War and what preceded it is a must.
▪ Citronella candles are a must at an outdoor do.
▪ Come dessert time, the fresh guavas in cream or the not too sweet, ultra creamy flan is a must.
▪ In the absence of a hood a good cover glass is a must.
▪ It comes with eight megabytes of random access memory, a must since it also comes with Windows 95.
▪ The site covers several kilometres, so good walking shoes and a hat are a must.
▪ These friendly classes are so popular, numbers are restricted and booking is a must.

must

I. must¹ S1 W1 /məst; strong mʌst/ modal verb (negative short form mustn’t)
[Language : Old English; Origin : moste, from motan 'to be allowed to, have to']
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.
REGISTER
In 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?

2. used 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.
GRAMMAR
Do not use must not to say that it is not necessary for someone to do something. Instead, use need not or do not have to:
　 ▪ You need not (NOT must not) work through the exercises in order.

3. used 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. especially British English 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.’

5. especially British English spoken used to say that you intend or want to do something:
　 ▪ I must call her tonight.

6. I 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?

8. a 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 novel

9. if 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.

10. if 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)
• • •
THESAURUS
▪must 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 especially British English to have to do something, because of a legal, professional, or social rule :
　 ▪ Members of parliament are obliged to declare all their financial interests.
▪be required to do something (also be obliged to do something especially American English) formal to have to do something – 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 obligated 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.

II. must² /mʌst/ noun [COUNTABLE USUALLY SINGULAR]
[date : 1800-1900; Origin : ⇨ must¹]
something that you must do or must have:
　 ▪ Warm clothes are a must in the mountains.