間 (あいだ) means “during” or “while.” It marks a stretch of time, and the rest of the sentence describes something that fills that whole stretch: 電車を待っている間、本を読んでいました — “While I was waiting for the train, I was reading a book.”
The word literally means “the space between,” and that image is the key to using it. 間 draws a box around a period of time from start to finish. Whatever you say next has to last from one edge of the box to the other.
間 = for the entire time that something is going on. If the main action happens only once inside that time, you need 間に instead.
What does 間 mean?
間 turns a noun or a clause into a time span, and the main clause tells you what was true or ongoing for all of it.
- 夏休みの間、ずっと実家にいました。 — I was at my parents’ place the whole summer break.
- 子どもが寝ている間、母は本を読んでいた。 — While the kids were asleep, their mother was reading.
In English, “while” and “during” can introduce either a long action or a single event (“during the meeting, my phone rang”). Japanese splits those two meanings. 間 on its own covers the first: a background that lasts, with a main clause that also lasts. For the single event inside the period, Japanese uses 間に, which has its own lesson.
Two fixed expressions you will meet constantly are built on the same word: 長い間 (“for a long time”) and この間 (“the other day”). The second one does not mean “during this” — it is an idiom for a recent past day.
How to form 間
間 is a noun, so it attaches the way any noun-modifying clause does: nouns take の, verbs and adjectives connect in their plain form, and な-adjectives keep な.
| Word type | Pattern | Example |
|---|---|---|
| Noun | Noun + の + 間 | 授業の間、会議の間 |
| Action verb | Verb て-form + いる + 間 | 待っている間、寝ている間 |
| State verb | Plain form + 間 | 日本にいる間、お金がある間 |
| い-adjective | Plain form + 間 | 若い間 |
| な-adjective | な-adj + な + 間 | 元気な間、暇な間 |
With action verbs you almost always use the ている form: 待っている間, not 待つ間. The ている form stretches the action into a span, which is exactly what 間 needs. State verbs like いる and ある already describe a span, so they attach directly.
Two grammar details matter inside the 間 clause:
- Use が, not は, for its subject. 母が料理している間 — the 間 clause is a modifier, and modifiers mark their own subject with が.
- Keep it non-past. Even in a story about yesterday, you say 待っている間, not 待っていた間. The main verb at the end carries the past tense.
When is 間 used?
- Describing what filled a period: 旅行の間、毎日雨でした — it rained every day of the trip.
- Two things happening in parallel, often with different people: 私が掃除している間、夫は料理をしていた.
- Rules that apply for a whole period: 試験の間は話さないでください — no talking for the duration of the exam.
- Setting a limit with 間は: 元気な間は働きたい — I want to keep working as long as I’m healthy.
間 is neutral. You will hear it in daily conversation, read it on notices, and see it in news. In casual speech people often reach for ながら or うちに instead, but 間 is never too stiff for everyday use.
間 example sentences
授業の間、スマホを使わないでください。
Please don’t use your phone during class.
母が料理している間、私はずっとテレビを見ていました。
While my mother was cooking, I was watching TV the whole time.
電車を待っている間、本を読んでいました。
I was reading a book while I waited for the train.
夏休みの間、祖母の家に泊まっていました。
I stayed at my grandmother’s house over the summer holidays.
赤ちゃんが寝ている間は、静かにしてね。
Keep it down while the baby is sleeping, OK?
長い間、連絡しなくてすみませんでした。
I’m sorry I didn’t get in touch for so long.
Look at the main verbs: 見ていました, 読んでいました, 泊まっていました, 静かにして. Each one describes something that lasts. That match between a long span and a long action is what makes these sentences natural.
Nuance of 間
The core nuance is coverage. 間 says the main clause is true from the beginning of the period to its end. That is why the main clause so often contains ている／ていた, ずっと, or a state like いる or だ.
Compare these two:
- 友達が来るまで、待っていた。 — I waited until my friend came. (focus on the end point)
- 友達を待っている間、音楽を聞いていた。 — While I was waiting for my friend, I listened to music. (the whole span)
When you add は to make 間は, the period becomes a condition or a limit: “as long as,” “at least for the time that.” 日本にいる間は、日本語だけで話したい — “As long as I’m in Japan, I want to speak only Japanese.” The implication is that things may be different afterwards.
Quick test: can you add “the whole time” to your English sentence without changing the meaning? If yes, use 間. If the action happened once, at one point, use 間に.
間 vs 間に
This is the pair that JLPT grammar questions love. The only visible difference is one particle, but it changes what kind of main clause you can use.
Both English translations use “while,” which is why learners mix them up. Ask what the main verb is doing: sleeping for the whole afternoon fills the box, so 間; tidying the room is a job that starts and finishes inside the box, so 間に.
Common mistakes with 間
Making one phone call does not fill the whole time your mother was asleep. A single action inside the span needs 間に.
The 間 clause stays non-past and uses ている for action verbs. The past tense goes on the final verb only.
After a noun, 間 needs の, just like any other noun you attach to a noun.
The subject inside the 間 clause takes が. は belongs to the main clause (私は).
Is 間 on the JLPT?
Yes. 間 is standard N4 grammar, and it almost always appears together with 間に. Grammar questions give you a sentence and ask which of the two fits; reading passages use 間 to set up what someone was doing during an event.
At N4 you should be able to:
- Attach 間 to nouns with の and to verbs in the ている form
- Choose 間 when the main clause lasts the whole period, and 間に for a one-time action
- Read 長い間 and この間 as set phrases
A typical item: 子どもが寝ている（ ）、洗濯をすませた。 The main verb すませた (“finished”) is a completed one-off task, so the answer is 間に, not 間.
Practice questions for 間
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電車に乗っている間、ずっと音楽を聞いていました。 — I was listening to music the whole time I was on the train.
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母が買い物している間に、部屋を掃除した。 — I cleaned my room while my mother was out shopping. (One finished task inside the span, so 間に.)
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コンサートの間は、写真をとらないでください。 — Please do not take photos during the concert.
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日本にいる間、毎日すしを食べていました。 — While I was in Japan, I ate sushi every day.
Learning path for 間
Related grammar to review next
- 間に — same formation, but for one action that happens at some point inside the span.
- ながら — also “while,” but one person doing two things at once; 間 lets two different people do different things.
- とき — the general “when” marker, for a moment or occasion rather than a whole period.
- までに — sets a deadline; pairs well with 間 when you talk about what fills the time before it.
- うちに — the N3 step up: do something while a condition still holds.
Learn 間 with Hane
Hane puts 間 and 間に side by side in short drills, so you learn to hear the difference between “the whole time” and “at one point during.” Start practising N4 time expressions in Hane.
FAQ about 間
What does 間 (aida) mean in Japanese?
間 (aida) means “during; while something happens”. It is JLPT N4 grammar. 間 turns a noun or a clause into a time span, and the main clause tells you what was true or ongoing for all of it.
How do you form 間 (aida)?
間 is a noun, so it attaches the way any noun-modifying clause does: nouns take の, verbs and adjectives connect in their plain form, and な-adjectives keep な.
What is the difference between 間 and 間に?
間: throughout the period. 間に: at some point within it.
What is an example sentence with 間 (aida)?
授業の間、スマホを使わないでください。 — Please don’t use your phone during class.