Modal Verb Definitio Modals (also called modal verbs, modal auxiliary verb s, modal auxiliaries ) are special verbs which behave irregularly in English . However, I am going to show you in this section the use of can/can’t.
Auxiliary verb can (positive) and can't (negative) Use can, when you ask someone to do things. Use 'can' to talk about 'possibility'. Always use can with another verb.