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を (o) — the object particle

JLPT N5 Particles

Marks what the action is done to: read a book, drink tea

を marks the direct object — the thing the verb acts on. The kana を exists almost solely for this job and is pronounced plain o. Pattern: [thing]を[verb]. It also marks the space you move through with motion verbs (公園を歩く — walk through the park).

How to form it

PatternExample
Object + を + verb水を飲みます — drink water
Place + を + motion verb橋をわたります — cross the bridge

Example sentences

JapaneseReadingMeaning
まいあさこーひーをのみます。
maiasako-hi-wonomimasu。
I drink coffee every morning.
にほんのえいがをみました。
nihonnoeigawomimashita。
I watched a Japanese film.
こうえんをさんぽします。
kouenwosanposhimasu。
I take a walk through the park.

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Watch out

A few “verbs” that feel transitive in English take が instead: わかる (understand) and できる (can do) — 日本語わかります, not を. Treat those as exceptions to memorize early.

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