Relier Pairs Modal verbs. Version en ligne Match the correct modal verb with the example. par Isabel Gallego Chaves 1 MAY - possibility 2 MAY - permission (formal) 3 CAN - Permission (informal) 4 CAN - ability 5 HAVE TO - obligation (external) 6 MUST - deduction 7 MUST - obligation (personal) 8 DON'T HAVE TO - no obligation 9 MUSTN'T - prohibition 10 CAN - possibility Walter can check his emails when he is cooking "May I come in?" I asked the headmaster. Can I make a phone call? I am busy all day but I may lend you a hand after work. Passengers must check that they have their luggage. Eddie's twin brother must be the one on the left because they look alike. You can't be on time, the bus left ten minutes ago If your car is correctly parked, you don't have to worry. Passengers have to hold their passports when passing the police control. You mustn't leave the school jumping over the fence.