Say what you're acting on
It marks the noun that the verb acts on.
JLPTN5
Noun + を + Verb~ o + verb
mark what a verb acts on
Example Sentences

I'm going to eat breakfast!

Want to drink water?
Place を right after the noun that receives the action to show it is the direct object. The particle is written with the kana を but pronounced o. The verb normally comes at the end, after the marked object.
Tips and Common Traps
Hana· Key point
を is the spotlight particle — it shines a light on whatever you're eating, reading, or doing. Verbs that act on something take one.
Build the Sentence
JLPT N5Drink water
Arrange the words in the correct Japanese order:
を
object · said "o"みず水
waterのむ飲む
drink