Japanese Particles Wo and Ni: When to Use Each

What Are を (Wo) and に (Ni)?

These two particles appear in nearly every Japanese sentence you'll ever read or write. Both are tested on the JLPT N5 exam, and understanding them clearly now makes every grammar point that follows easier to absorb.

A particle (助詞, joshi) is a short hiragana character that attaches to a noun and signals its grammatical role. Where English relies on word order to show who does what to whom, Japanese relies on particles. Before working through the rules below, it helps to have a clear picture of how basic Japanese sentence structure is built — that foundation makes the particle logic click faster.

Here is the short version:

• を (wo) marks the direct object — the thing the action is done to
• に (ni) is a multi-purpose particle covering destination, specific time, recipients, existence location, and purpose

Using を (Wo): The Direct Object Marker

を is romanized as wo, though in natural speech it sounds like a plain o. Its role is consistent: mark the noun that the verb acts on directly.

Pattern: Subject は Object を Verb

Ask yourself — What am I eating? What am I reading? What am I studying? That answer gets を.

• すしを食べる (sushi wo taberu) — eat sushi
• みずを飲む (mizu wo nomu) — drink water
• ほんを読む (hon wo yomu) — read a book
• えいごをべんきょうする (eigo wo benkyou suru) — study English
• おんがくをきく (ongaku wo kiku) — listen to music

One thing that trips up beginners: adjectives describing a noun have no effect on which particle that noun takes — only the verb at the end of the sentence matters. If you're also building your vocabulary with descriptive words, the guide to useful Japanese adjectives covers how those fit into sentences alongside particle patterns like these.

Using に (Ni): Five Key Functions

に covers more ground than を, but each use has a clear logic of its own. Learn them one at a time.

1. Destination of Movement

When you move toward a place, put に after that place.

• がっこうに行く (gakkou ni iku) — go to school
• うちに帰る (uchi ni kaeru) — return home

2. Specific Point in Time

Use に with clock times, days of the week, and calendar dates.

• 8時に起きる (hachi-ji ni okiru) — wake up at 8 o'clock
• 月曜日に来る (getsuyoubi ni kuru) — come on Monday

Important: Words like 今日 kyou (today), 明日 ashita (tomorrow), 来週 raishuu (next week), and 毎日 mainichi (every day) do not take に — they stand alone without any particle. に goes with pinpointed, specific times, not general or relative ones.

3. Indirect Object — the Recipient

When you give, show, ask, or send something to someone, に marks that person.

• ともだちにプレゼントをあげる (tomodachi ni purezento wo ageru) — give a present to a friend
• せんせいにしつもんをする (sensei ni shitsumon wo suru) — ask a question to the teacher

4. Location of Existence (with いる / ある)

When you want to say where something or someone exists, use に with いる (for living things) and ある (for objects and places). This is one of the most tested patterns at JLPT N5.

• つくえの上にほんがある (tsukue no ue ni hon ga aru) — There is a book on the desk.
• こうえんにこどもがいる (kouen ni kodomo ga iru) — There are children in the park.

This pattern pairs directly with the location vocabulary in the next lesson — once you have a full set of location words, this に + いる/ある structure will feel completely natural.

5. Purpose of Movement

Attach に to a verb stem before a movement verb to express going somewhere in order to do something.

• えいがを見に行く (eiga wo mi ni iku) — go to see a movie
• かいものに行く (kaimono ni iku) — go shopping

All Uses at a Glance: Reference Table

Example Sentences in Context

Read these sentences aloud — saying them out loud is the fastest way to make particle choices feel instinctive. Each sentence uses the present-tense verb forms you've already practised.

1. わたしはともだちにほんをあげます。 Watashi wa tomodachi ni hon wo agemasu. I give a book to my friend. (に marks the recipient; を marks the object given — both particles in a single sentence.)
2. かれは8時にがっこうに行きます。 Kare wa hachi-ji ni gakkou ni ikimasu. He goes to school at 8 o'clock. (First に marks the time; second に marks the destination.)
3. つくえの上にじしょがあります。 Tsukue no ue ni jisho ga arimasu. There is a dictionary on the desk. (に with ある marks where the object exists.)
4. こうえんにこどもがいます。 Kouen ni kodomo ga imasu. There are children in the park. (に with いる marks where people or animals exist.)
5. わたしはえいがを見に行きます。 Watashi wa eiga wo mi ni ikimasu. I'm going to see a movie. (を marks the movie as the object of 見る; に before 行く marks the purpose of the trip.)

Common Mistakes to Avoid

Confusing に (existence) with で (action location) This is the single most common mix-up at JLPT N5. に marks where something is; で marks where an action takes place. 「こうえんにいる (kouen ni iru)」 = I'm in the park (existence). 「こうえんで遊ぶ (kouen de asobu)」 = play in the park (action happening there). If something is simply located somewhere, use に. If an activity is performed somewhere, use で.

Using を with いる or ある Learners sometimes write 「こうえんをいる」 — this is incorrect. いる and ある always pair with に for the location. Existence verbs never take を.

Leaving out に before recipients With giving and receiving verbs — あげる, もらう, くれる — the temptation to drop the に before the person is strong, especially in casual speech. In writing and in formal contexts, however, omitting it creates genuine ambiguity. Build the habit of always writing the particle in full.

Adding に to relative time words by analogy Learners correctly learn 「8時に起きる」 and then write 「毎日に起きる」 by the same logic — but this is wrong. に attaches only to specific, pinpointed times (a clock time, a named day, a date). General/relative time words like 毎日, 今日, and 明日 stand alone without any particle.

Cultural note: In relaxed spoken Japanese, particles — especially を — are frequently dropped altogether. You will hear 「すし食べた?」 (sushi tabeta?) far more often than the full 「すしを食べた?」 among friends. This is completely natural. That said, learning the complete forms first, before dropping particles, gives you a reliable mental model of what the grammar is actually doing. Once those rules are internalized, the casual omissions make sense rather than confuse.

Practice Quiz

Part A — Fill in the Particle (を or に)

Part B — Translate into English

Part C — Build the Sentence

Answers

Part A: 1. を / 2. に / 3. を / 4. に / 5. に / 6. に / 7. を / 8. に

Part B: 9. drink water 10. go to school 11. give to a friend 12. There is a book on the desk.

Part C: 13. すしをたべる (sushi wo taberu) 14. がっこうにいく (gakkou ni iku) 15. つくえの上にほんがある (tsukue no ue ni hon ga aru)

Still hesitating over を versus に the moment you open your mouth? That split-second uncertainty is exactly what live practice fixes fastest. Try a Free Trial lesson with Kind Japanese over LINE and use these particles in real sentences with a native speaker who can give you instant feedback.

FAQ

Is を really pronounced "wo" or just "o"?

In everyday speech を sounds like a plain o — the "w" is not pronounced. The romanization wo exists to distinguish it visually from the standalone particle お and the vowel お inside words. Either spelling in your notes is fine, but writing wo helps beginners remember its particle function at a glance.

What is the difference between に and で for locations?

に marks existence (where something is) and destination (where you're going to). で marks the location of an action (where something happens). 「図書館にいる (toshokan ni iru)」 = I'm at the library (existence). 「図書館で勉強する (toshokan de benkyou suru)」 = I study at the library (action). The verb is always your clue — existence verb → に; action verb → で.

Can に and へ both mark a destination?

Yes — both can translate as "to" for going somewhere. へ (e) emphasizes the direction of travel; に emphasizes the arrival point or a specific purpose there. In most everyday sentences like "go to school," they are interchangeable, but に is more natural and more common. When in doubt, に is the safer choice for beginners.

Do adjectives affect which particle I use?

No. Adjectives describe a noun, but the particle that follows the noun depends entirely on the verb at the end of the sentence. Build your adjective vocabulary freely and the particle rules here apply regardless of how many descriptive words you layer in.

Continue learning

← Previous lesson: Connecting verbs and actions with the て Form — the linking structure that leads directly into sentences using を and に together

→ Next lesson: Japanese location words — the vocabulary set that pairs directly with the existence-location pattern (に + いる / ある) you practised here

This is Lesson 51 of the Kind Japanese 100-day beginner curriculum.