Course Logo Small

Learn to Speak English Fluently: Use of ‘must’

The course is designed to facilitate self-learning in an easy way. To know more read: How to Use the Course Content? In the previous unit you have learnt to make Questions with ‘May’ and ‘Might’ and in this unit you’ll learn the use of ‘must‘.

Must’ is most commonly used to express certainty. It can also be used to express necessity or strong recommendation. Some prefer to use “have to’ instead of ‘must’.

Must is used —

  • To talk about one’s moral responsibility and duty.

We must help the poor.
We must be grateful for what we have.
Students must respect their teachers.

  • To express necessity and a feeling of certainty.

One must carry an umbrella during the rainy season.
You must work hard to get good marks.
He must be hungry.

She must be tired after the journey.

  • To talk about something that was possible in the past but did not take place we use ‘must’ with ‘have’.

I must have made a mistake in the test.
She must have forgotten your purse at home.
They must have reached by now.

Positive, Negative and Negative Contracted form of ‘must’
Positive Form Negative Form Negative Contracted Form.
must must not musn’t

Use of ‘musn’t’

I mustn’t depend on my parents for everything.
You mustn’t stop taking medicines.
They mustn’t create problems for others.

Exercise: Write more sentences using the examples which you can use in your day to day conversation on your own and practice orally.

Use of ‘must’ in questions

Must is used to question, if something was necessary. For such questions one can answer as given in the following example.

Must they admit the boy in a hostel?
Yes, they must.
Yes, they must admit the boy in a hostel.
No, they musn’t.
No, they musn’t admit the boy in a hostel.

Exercise: Write answers to the following questions and practice orally.

Must you always oblige him?
Must you take medicines continuously?
Must your friend Veena stay here with you?
Must I always listen to others?
Must they go to their native place every month?

Exercise: Write more questions and answers using the example, which you can use in your day-to-day conversation and practice orally.

Previous: Questions with ‘May’ and ‘Might’

Next: Use of ‘ought to’, ‘dare’ and ‘need’

Check the meanings of the words in English Oxford Living Dictionaries