form

present tense

past tense

affirmative

I/you/we/they have to
he/she/it has to

affirmative

I/you/he/she/it/we/they had to

negative (+ NOT)

I/you/we/they don’t have to
he/she/it doesn’t have to

negative (+ NOT)

I/you/he/she/it/we/they didn’t have to

interrogative (+?)

Do I/you/we/they have to?
Does he/she/it have to?

interrogative (+?)

Did I/you/he/she/it/we/they have to?

when to use must and have to

  • must expresses that the speaker thinks something should be done (internal obligation)  (I must go home now. You must go home now.)
  • has to/ have to expresses that a rule should be observed or that someone thinks something should be done (external obligation) (We have to wear a school uniform at this school. My mother said I had to be home at ten.)
  • mustn’t expresses a prohibition. (You mustn’t park here.)
  • doesn’t have to /don’t have to expresses that there is no obligation to do something if you don’t want to. (You don’t have to apologize.)

exercises

the form and use of to have to

  • exercise 1: fill in has to or have to
  • exercise 2: choose between has to and have to
  • exercise 3: fill in doesn’t have to or don’t have to
  • exercise 4: choose between have to, has to, don’t have to and doesn’t have to
  • exercise 5: choose between have to, has to, don’t have to and doesn’t have to
  • exercise 6: fill in have to, has to, don’t have to or doesn’t have to
  • exercise 7: fill in have to, has to, don’t have to or doesn’t have to

the difference between to have to and must

  • exercise 1: fill in the correct verb forms of to have to or must
  • exercise 2: various exercises with to have to and must
  • exercise 3: multiple choice oefening met vormen van to have to en must
  • exercise 4: choose between don’t have to and mustn’t 
  • exercise 5: choose between don’t have to and mustn’t 
  • exercise 6: fill in don’t have to or mustn’t 
  • exercise 7: fill in to have to or must
  • exercise 8: fill in to have to or must

useful pages

  • exercises for practising modalities: ability, permission, advice, deduction and probability, necessity and obligation and request