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Confusing Words In English

Have To & Must


Grammatical Differences

"Have to" can be used as a main verb

"Must" is a modal verb, and it can not be used as a main verb, so a main verb must be added, to the sentence when using "must"

Difference In Meaning

There is also a slight meaning between the two word, but many people use the same words interchangeably.

Must - is used for to state personal personal obligation or respectability: there is no rule or law

  • I must go to the store.
  • We must learn English.
  • I must go to sleep.
  • We must help the lady next door.
  • I must call my sister.

Have to - is used to state non-personal obligations or responsibly; a rule or law

  • I have to pay our bill.
  • The girls have to work late next week.
  • I have to to work hard.
  • We have to pay tax.
  • Our teacher has to to give us an exam.

Note: Have To & Must are usually interchangeably

Must not means forbidden!! not allowed to do something or go somewhere

  • I must not pay the electric bill late.
  • We must not drive a car without car insurance.
  • I must not let the dog outside without a leash.

Do not have to - is used to say something is not necessary to do, but you can do it if you want

  • I do not have to go to the store.
  • We do not have to see my son's teacher.
  • I do not have to call my sister she, because I will see her latter.

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