Comes when something new is introduced
Used in the question of who or what
- The object of the sentence is usually marked by the particle "o," but some verbs and adjectives (expressing like/dislike (kirai), want(koshii), potential, necessity, fear, need(hitsuyo), be located, exist(aru) etc.) take "ga" instead of "o."
- EX: Kuruma ga hoshii desu.
- I want a car.
Used to indicate subject in a subordinate clause