Must & Have To Quiz 2 1

Must & Have To Quiz 2

We use “must” and “have to” to say that it is necessary to do something. Sometimes it doesn’t matter which you use:

  • Oh, it’s later than I thought. I must go OR I have to go.

But there is a difference between “must” and “have to” and sometimes this is important: must is personal. We use “must” when we give our personal feelings.

  • You must do something = “I” (the speaker) say it is necessary.
  • She’s a really nice person. You must meet her. (I say it is necessary.)
  • I haven’t phoned Lily for ages. I must phone her tonight.

“Have to” is impersonal. We use it when we are talking about facts, not our personal feelings. You “have to” do something because of a rule or the situation:

  • You can’t turn right here. You have to turn left. (It’s against the law to turn right.)
  • My eyesight isn’t very good. I have to wear glasses for reading. (I can’t read without them.)
  • Lily can’t come out with us this evening. She has to work. (She has an obligation.)
  • I have to get up early tomorrow. I’m going away and my train leaves at 7:30. (Because of the train schedule, it is necessary for me to get up early.)

NOTE: If you are not sure which to use, it is usually safer to use “have to”.

You can use “must” to talk about the present or future BUT not the past.

  • We must go now.
  • We must go tomorrow.
  • WRONG: We must go yesterday.

You can use have to in all forms.


  • I had to go to the hospital. (past)
  • Have you ever had to go to the hospital? (present perfect)
  • I might have to go to the hospital. (infinitive after might)

In questions and negative sentences with “have to”, we use the auxuliary verb DO (do/does/did):

  • What do I have to do to get a driving license? (not ‘what have I to do?)
  • Why did you have to go to the hospital?
  • Salma doesn’t have to go to work on Saturdays.

“Mustn’t” and “don’t have to” are completely different:

You mustn’t do something = it is necessary that you do not do it. (so don’t do it!)

  • You must keep a secret. You mustn’t tell anyone. (so don’t tell anyone!)
  • I promised I would be on time. I mustn’t be late. (so I must be on time!)

You don’t have to do something = you don’t need to do it (but you can if you want).

  • You can tell me if you want but you don’t have to tell me = you don’t need to tell me.
  • I’m not working tomorrow, so I don’t have to get up early.

You can use “have got to” instead of “have to“. So, you can say:

  • I’ve got to work tomorrow, or I have to work tomorrow.

“When has Nina got to go?” or “When does Nina have to go?”


Complete the following sentences by inserting either "must" or "have to" where it's necessary!

Must & Have To Quiz 2 2

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6 thoughts on “Must & Have To Quiz 2”

  1. Thnk uh sir to create quiz nd to teach the most important topic onln, I nd many other people like me have learnt it, nd answered wll all the quiz questions, so I request uh to update story for onln learning topic like today as well…. Thnk uh sir🙏


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