Can, may, must - exercises with answers

Exercise 3

Use modal auxiliary verbs can, may, must in positive or negative forms (can't, mustn't, needn't).

Good morning, Madam. ___ help you?
Can I help you?

I'll take care of her. You ___ worry.
You need not worry.

Excuse me, sir! you speak French?

Alan isn't coming tonight. He come tomorrow, I hope.

There's a lot of work to do in the house. You help me!

You call him anymore. I have already called him.

My girlfriend is over there. you see her?

I borrow your pen for a while, please?

Teachers beat children. It's forbidden.

I can hear some voices. Someone be in the house.

We eat sweets! We are on a diet.

You buy it on Sunday if you want. The shops are open.

You drive me to the station. I can walk.

We want to be the best. We practise!

I revise for the exam. It will be very easy.

Mary, wait a minute. I ask you a question?

You cook dinner today. I'll order a pizza.

I'm sure the museum is near here. It be round the corner.

I drink milk. I'm allergic to it.

Exercises with answers, PDF worksheets and grammar rules with examples.

Remember:

1. The opposite of can is cannot (can't).

I can speak Polish fluently.
I cannot speak Polish at all.

You can use my laptop. I don't need it now.
You can't use my laptop. I need it now.

2. The opposite of may is must not (mustn't).

May I kiss you, Betty.
No, you mustn't. Are you kidding?

OK. You may go to the disco tonight.
You mustn't go to the disco tonight. You're grounded.

3. The opposite of must is need not (needn't).

I must help you with the housework.
No, you needn't. I'll do it on my own today.

You must read the instructions first.
No, I need not. I know how to do it.