MODALS + HAVE
what(could-should) have happened?¿que (podria - deberia) haber pasado i(could-should) have worked-godria-deberia)haber trabajado.
*fred macte a lot of node when he came home you must have heard him fred hizo ruido cuando llego a noche. debiste haberlo oido.
*the news was awful, you should have said some thing about it la nticia era espantosa deberia haber dicho algo al respeto.
