ADP 4 - Modal Verbs

You mustn't take pictures in the museum.

• External Obligation

• Optional choice

• Prohibition

You can't smoke here.

• Informal prohibition

• Formal prohibition

• Improbability

I must go! I'm late for school.

• External obligation

• Internal obligation

• Suggestion

Visitors are not allowed to feed the animals.

• Incapability

• Informal prohibition

• Formal prohibition

The teacher said we have to do the test on pencil.

• Internal obligation

• External obligation

• Optional choice

You should call his mother to check what to do.

• Advice

• Permission

• Optional choice

You don't have to work out every single day.

• Prohibition

• Advice against something

• Optional choice

They shouldn't eat so much pizza.

• Advice against something

• Optional choice

• Prohibition