Modal verbs

• You have to fasten your seat belts.

• You don't have to fasten your seat b

• You are allowed to fasten your seat belts.

• You needn't fasten your seat belts.

• You are not allowed to make a noise.

• You don't have to make a noise.

• You mustn't make a noise.

• You needn't make a noise.

• You are not allowed to pay.

• You don't have to pay.

• You mustn't pay.

• You needn't pay.

• You are not allowed to close the gate.

• You have to close the gate.

• You mustn't close the gate.

• You needn't open the gate.

• You are not allowed to park here.

• You don't have to park here.

• You mustn't park here.

• You needn't park here.

• You are allowed to come in.

• You can come in.

• You mustn't come in.

• You needn't come in.

• You are not allowed to wear a hard hat.

• You don't have to wear a hard hat.

• You have to wear a hard hat.

• You mustn't wear a hard hat.

• You are not allowed to go onto the grass.

• You don't have to go onto the grass.

• You mustn't go onto the grass.

• You needn't go onto the grass.

• You are allowed to drive on this road.

• You don't have to drive on this road.

• You mustn't drive on this road.

• You needn’t drive on this road.

• You are not allowed to block this door.

• You have to block this door.

• You mustn't block this door.

• You needn't block this door.