Express Permission, Obligation and Prohibition using Modals

You mustn’t help me, it is too dangerous.

• Permission

• Obligation

• Prohibition

I can’t use my car. Can I borrow yours?

• Permission

• Obligation

• Prohibition

The rules say that you can only write the answer once.

• Permission

• Obligation

• Permission

I must study well to pass my subjects.

• Permission

• Obligation

• Prohibition

There’s a lot of dirt in your house. May I clean it?

• Permission

• Obligation

• Prohibition

You have to start thinking about our future together.

• Permission

• Obligation

• Prohibition

Did they tell you that you can’t bring your dog here? No pets allowed!

• Permission

• Obligation

• Prohibition

We have to be there ten minutes before the 1^st class starts.

• Permission

• Obligation

• Prohibition

You can sit here, the seat is free.

• Permission

• Obligation

• Prohibition

You can’t drive in this country unless you are over eighteen.

• Permission

• Obligation

• Prohibition