Modal verbs must - mustn't
- PDF worksheets
- Online exercises
- Grammar rules PDF
English grammar books PDF
PDF book 1: English grammar exercises PDF
PDF book 2: English grammar rules PDF
Must - mustn't worksheets PDF
Free PDF exercises with answers to download.
You are going to a language school tomorrow morning. What must or mustn't you do? Use verbs from the list.
- (be, wear, listen, make, oversleep, look, sit)
I ___ my new T-shirt.
I ___ in the morning.
Complete sentences with must or mustn't and keep the same meaning.
- Put the flashdisk in the computer first.
You ___ put the flashdisk in the computer first.
Never drive a car when you are sleepy.
You ___ drive a car when you are sleepy.
Choose correct endings to complete sentences.
- Let's do it now.
(You mustn't touch anything.| We must finish it today.)
Complete short dialogues.
- Can you stay a little longer?
I'm sorry, I ___ go.
I'm so tired. Let's go back home.
No, never. We ___ give up.
Must, have to, mustn't, needn't PDF
- Worksheets with answers to compare these modal verbs.
Can, may, must, have to exercises PDF
- Mixed modal verbs in positive and negative forms.
Modal auxiliary verbs Online exercises and PDF worksheets.
Grammar rules PDF
Modal verbs rules PDF Grammar rules with examples.
English grammar PDF All PDF rules on e-grammar.org.
Must - Mustn't
1. The modal verb must is used to express obligation, recommendation and certainty.
2. It has only a present form, which is the same for all persons, singular and plural.
3. The negative form must not or mustn't is used to express prohibition. The opposite of must, however, is needn't.
4. All other tenses are formed with have to (must) or be allowed to (mustn't).
Must is used for strong obligations and expresses the speaker's opinion or will.
I must do my homework because I want to improve my English.
You must help me with the suitcase. It's too heavy.
Must also means a strong recommendation.
You must taste it. It's delicious.
Sam must study art. He is so talented.
Must is used to express the certainty of the speaker.
I must be ill. I'm so exhausted.
It must be your father. You are so similar to him.
Must not (mustn't) is used to express prohibition that involves the speaker's will.
I mustn't fail the exam.
You mustn't bully your classmates.
The opposite of must is need not (needn't).
You must go to school. Hurry up!
You needn't go to school today. It's Saturday.
- All PDF exercises and grammar rules from this website.