While Still / Before It Changes: 〜うちに

Use 〜うちに for actions done while a condition still holds or before a change happens.

Understand the “while still” and “before it changes” meanings of 〜うちに.Recognize its practical use for timing, advice, and natural change.Read how writers mark a limited window of opportunity.

Guided study

Core meaning

〜うちに means “while still …” or “before … changes.” The grammar highlights a limited time window. The speaker suggests acting before the current condition disappears.

熱いうちに、食べてください。

Please eat it while it is still hot.

The action should happen before the food loses its heat.

忘れないうちに、メモしておこう。

Let's write it down before we forget.

The memo should be written before memory fades.

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