Quick Answer : What are the common modal verbs?
MODAL VERBS. There are nine modal verbs in English: can, could, may, might, will (shall), would, should, must and ought. They are auxiliary verbs, used before the infinitive form of main verbs (without ‘to’ except after ‘ought’). What are the 9 modal verbs? There are nine modal auxiliary verbs: shall, should, can, could, will, would, …