I Tomorrow Məst Mustn't Finish Wear Modal Verb

• all visitors must report to reception.
• cars must not park in front of the entrance (= it is not allowed).
• i must ask you not to do that again.
• you mustn't say things like that.

must

1. used to say that something is necessary or very important (sometimes involving a rule or a law)
• All visitors must report to reception.
• Cars must not park in front of the entrance (= it is not allowed).
• I must ask you not to do that again.
• You mustn't say things like that.
• I must go to the bank and get some money.
• I must admit (= I feel that I should admit) I was surprised it cost so little.
• Must you always question everything I say? (= it is annoying)
• ‘Do we have to finish this today?’ ‘Yes, you must.’
• ‘No, you don't have to.’
• What time do we have to be home?
• Are we supposed to show our ID cards?
• Is it necessary to apply for a visa?
• Is there a legal obligation to wear a bike helmet here?
2. used to say that something is likely or logical
• note at need
  https://www.oxfordlearnersdictionaries.com/definition/english/need_1
• You must be hungry after all that walking.
• He must have known (= surely he knew) what she wanted.
• I'm sorry, she's not here. She must have left already (= that must be the explanation).
• You must be home by 11 o’clock.
• I must wash the car tomorrow.
• I have to collect the children from school at 3 o’clock.
• Nurses have to wear a uniform.
• I must finish this essay today. I’m going out tomorrow.
• I have to finish this essay today. We have to hand them in tomorrow.
• I had to wait half an hour for a bus
• We’ll have to borrow the money we need.
• I have to go to the dentist tomorrow.
• Do the children have to wear a uniform?
• Passengers must not smoke until the signs have been switched off.
• You mustn’t leave the gate open.
• You don’t have to pay for the tickets in advance.
• She doesn’t have to work at weekends.
• He has (got) to be the worst actor on TV!
• This must be the most boring party I’ve ever been to.
• Your trip must have been fun!
3. used to recommend that somebody does something because you think it is a good idea
• You simply must read this book.
• We must get together soon for lunch.
• He can speak three languages.
• She will try and visit tomorrow.
• You must find a job.
• You ought to stop smoking.
• I used to smoke but I gave up two years ago.
• Can I invite Mary?
• Should I have invited Mary?
4. used to say that somebody may do something but you do not really want them to
• ‘Can I smoke?’ ‘If you must.’
• It's from my boyfriend, if you must know.
5. used to tell people that something is so good or interesting that they should see, read, get it, etc.
• Sydney is one of the world's must-see cities.
• The magazine is a must-read in the show business world.
• This is on my must-do list.
• a must-have for any fan
6. in certain situations it is necessary for you to do something that you do not like or enjoy

Verb Forms

• must not
• mustn't

Word Origin

• Old English mōste, past tense of mōt ‘may’, of Germanic origin; related to Dutch moeten and German müssen.