kasong I discussed this with natives and MrGerbear the linguist on discord and this is the result: > Kasasara (lang) ni John ang bintana. (John has just closed the window.) - NOT VALID, you can't use ANG with these KA verbs for whatever reason. Instead you use SA for a definite article: > Kasasara (lang) ni John SA bintana. (John just closed THE window.) and NG for indefinite: > Kasasara (lang) ni John ng bintana (John just closed A window.)
@AMBoy i've always thought using ang here sounded odd. Not a linguist but I depend if "it sounds right"