Home of English Grammar

Grammar Guide
  • Home
  • Exercises
  • Rules
  • Test Yourself
  • Tools
    • Grammar Checker
    • Word Counter
  • Top Social Media Posts
  • Writing Guides
  • Contact
You are here: Home / Lessons / Using must

Using must

June 4, 2012 - pdf

Using must

Must is used to express several different ideas.

To express compulsion

  • You must do your homework before going to bed.
  • You must finish this work before Monday.
  • You must attend the conference.

To express duty

  • We must serve our country.
  • We must love our brethren.

To express obligation

  • We must respect our elders.
  • We must obey our parents and teachers.

To express necessity

  • We must get the roof repaired before monsoon sets in.
  • You must get a good job.

To give advice

  • You must change your clothes before leaving for office.
  • You must stop smoking.
  • You must exercise regularly.
  • You must avoid fatty foods.

To express some possibility or expectation

  • She must be back in a short while.
  • That must be interesting.
  • He must be working.

To express a logical conclusion

  • She must be nearly 40.
  • He must be joking.
  • She must be a miserable house wife.

Must refers to the present or future. In the past tense, we use had to to express similar ideas.

  • I had to do the paint job again.
  • I had to wait for them for two hours.

Instead of must, we can use will have to to talk about future obligation.

  • You will have to reach the station by 6.30. (OR You must reach the station by 6.30.)

The structure must have + past participle can refer to the past.

  • She must have reached home by now.
  • It must have been past mid-night when Dad returned home.

Must not

Must not is used to prohibit.

  • You must not tease the dog.
  • You must not smoke.
  • You must not be late for office.
  • You must not waste your money.
  • Share
  • Post
  • Send
  • Mail
2,485,429 
716,032 

Grammar Checker

GrammarCheck.net - Try online
Hint → Bookmark GrammarCheck for future use.

Latest Exercises

  • Conjunctions Exercise Level B1 June 20, 2025
  • Passive Voice – Simple Past Tense June 16, 2025
  • Pronouns Exercise Level B1 June 15, 2025
  • Phrasal Verbs And Vocabulary Exercise June 14, 2025
  • Forms of the Infinitive June 13, 2025
  • Gerunds And Infinitives – ESL Grammar Exercise June 12, 2025
  • Adjectives Followed by Prepositions June 12, 2025
  • Articles Exercise for ESL Students June 10, 2025
  • Simple And Progressive Tenses Exercise June 9, 2025

Copyright © 2025 · EnglishGrammar.org
Disclaimer · Privacy Policy · Sitemap