You mustn’t smoke.

You have to/must stop.

You mustn’t turn right.

You have to/must turn right.

You mustn’t take photos.

You don’t have to pay.

You mustn’t take your dog for a walk.

You have to/must pay.

You mustn’t go to the toilet here.

You don’t have to wear shoes.

You must/have to be quiet.

You have to/must be careful.

You don’t have to wear clothes.

• Powerpoint by Michael Lord