〜うちに (uchi ni)

JLPT N3

How to say “while a state lasts” or “before it changes” — do it now, while you still can.

Meaning

“While ~ / before ~ changes.” Act during a favorable state; or note a change that creeps in while doing something.

Formation

• Verb (dictionary / ている / ない-form) + うちに

• い-adj + うちに; な-adj + な + うちに; Noun + の + うちに

Examples

若いうちに、いろいろな国を旅行したい。

Wakai uchi ni, iroiro na kuni o ryokō shitai. — I want to travel to many countries while I'm young.

明るいうちに、家に帰りましょう。

Akarui uchi ni, ie ni kaerimashō. — Let's head home while it's still light out.

日本にいるうちに、富士山に登りたい。

Nihon ni iru uchi ni, Fujisan ni noboritai. — I want to climb Mt. Fuji while I'm in Japan.

音楽を聞いているうちに、眠くなってきた。

Ongaku o kiite iru uchi ni, nemuku natte kita. — While listening to music, I started to get sleepy.

How it works

With a positive state (若いうちに) it means “while it still lasts.” With a ない-form (忘れないうちに) it means “before ~ happens.” With 〜ているうちに it marks a change that creeps in unnoticed.

Compared with similar expressions

• 〜うちに — while a state lasts / before it changes.

• 〜あいだに — during a set period something is happening.

• 〜まえに — before (a clear point in time).

Common mistakes

• Noun / な-adj: 学生 → 学生のうちに, 元気 → 元気なうちに

• “before ~” uses the ない-form: 忘れないうちに

Related grammar

• 〜まえに — before doing

• 〜あいだに — during

• 〜ながら — while (simultaneous)