を (wo): The Object Marker
Quick Answer: を (wo) marks the direct object of a transitive verb — the thing that the action is done to. It also marks the space traversed with movement verbs like 歩く, 飛ぶ, 渡る.
Marking what receives the action in a sentence
Category: Particles
The Rule
を (wo) marks the direct object of a transitive verb — the thing that the action is done to. It also marks the space traversed with movement verbs like 歩く, 飛ぶ, 渡る.
Why This Matters
English uses word order (subject-verb-object) to show what receives the action. Japanese uses を instead, so word order is flexible. を also works with 'movement through space' verbs, which surprises many English speakers.
Examples
• コーヒーを飲みます。 — "I drink coffee." [を marks coffee as the direct object of 'drink'] • 公園を散歩します。 — "I take a walk through the park." [を marks the space traversed — not a direct object in English] • 大学を卒業しました。 — "I graduated from university." [を with 卒業する — marks the place you leave/graduate from] • 毎朝ジョギングをします。 — "I jog every morning." [を with する-verbs — ジョギングをする]
Common Mistakes
❌ 公園で散歩します。 ✅ 公園を散歩します。 → With movement verbs like 散歩する, use を (traversing through), not で (location of action). で would mean 'at the park' doing something static ❌ 映画が見ます。 ✅ 映画を見ます。 → 見る is a transitive verb — use を for the object, not が (unless expressing preference: 映画が好き)
Quick Tip
Remember: を marks not just 'what you do something to' but also 'the space you move through.' 道を歩く (walk along the road), 空を飛ぶ (fly through the sky).
Remember: を marks not just 'what you do something to' but also 'the space you move through.' 道を歩く (walk along the road), 空を飛ぶ (fly through the sky).
Examples
Common Mistakes
Incorrect: 公園で散歩します。 → Correct: 公園を散歩します。. With movement verbs like 散歩する, use を (traversing through), not で (location of action). で would mean 'at the park' doing something static
Incorrect: 映画が見ます。 → Correct: 映画を見ます。. 見る is a transitive verb — use を for the object, not が (unless expressing preference: 映画が好き)
Quiz
Which sentence uses を correctly for 'crossing the bridge'?