Must is one of the English modal verbs. This lesson shows you how to use the modal correctly. You can find modal verb exercises at the bottom of the page for practice.
Let’s start with the lesson.
Structure
Must is a modal verb used to show obligation. Like all modal verbs, must is followed by a base verb:
MUST + BASE VERB
Examples:
- He must go to class today.
- They must work tomorrow.
Must is also used to show possibility, and it’s used in situations where the speaker is very certain.
Examples:
- He ate 3 pieces of cake. He must like cake.
- They worked for 12 hours today. They must be tired.
Must Exercises
Here are some modal verb tests that use must:
Modal Verbs of Obligation Exercise
Modal Verbs of Obligation Exercise 2
Modal Verbs for Possibility Exercise
Modal Verbs for Possibility Exercise 2