for teachers of English and their students
How to use the verb must?
Use must to express obligation. After must (and other modal verbs), use the infinitive without to. Modal verbs have the same form for all persons and numbers.
For example, a phrase like this:
I must go now.
(you will be asked to create an account if you do not have one)
At PhraseCat.com you can study grammar points and practise their application right away.