(auxiliary) shall; ought to; should (forms a future tense, with a modal sense of compromise)
(auxiliary,formal,past) have; forms the perfect aspect
(archaic,auxiliary) have; forms the perfect aspect
(impersonal,transitive) there be; exist
(impersonal,transitive) there be; to happen; to occur
(archaic,transitive) to have; to own; to possess
(Brazil,transitive) to recover; to regain (to obtain something that had been lost)
(pronominal) to behave (to conduct oneself well, on in a given manner)
(impersonal,transitive) it has been ... since; ago (indicates the time since something occurred)