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Olgaa Posted 17 years ago
Grammar

Must/have to

Which of the modal verbs (have to or must) is preferable in the situations like these:
You must/have to fasten your seat belt while driving?
You must/have to stop at the STOP sign.

The law says you must/have to pay the taxes.

In such situations we can refer the action to the law. And if we break it, we will be punushed, fined etc. But at the same time it can be considered as a strong order. Or must is used only with the shade of someone's personal opinion and only have to is possible here?
  

Top answer

htm ]The British Council[/url] says that both are used for obligation, and 'must' is on the way to disappearing in American English. To me, all 3 of your sentences sound fine with either verb, and I doubt any native speaker would stop to consider whether the duress was internal or external.

  • htm ]The British Council[/url] says that both are used for obligation, and 'must' is on the way to disappearing in American English.
  • To me, all 3 of your sentences sound fine with either verb, and I doubt any native speaker would stop to consider whether the duress was internal or external.
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2 Answers
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[url=http://www.britishcouncil.org/learnenglish-central-grammar-must-have-to.htm]The British Council[/url] says that both are used for obligation, and 'must' is on the way to disappearing in American English. To me, all 3 of your sentences sound fine with either verb, and I do
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Olgaa,

I think you can stop worrying about fine distinctiions between must and have to when they express obligation. They are virtually identical. In the U.S. we almost always use have to in these situations, although it is certainly not wrong to use must.

Do you have to fasten your seat belt while driving?
You have to stop at t

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