jlpt-boi / JLPT N3 / Grammar / 〜うちに
〜うちに
The window of time is 'while I am in Japan', so いる fills the first slot to form いるうちに.
Tested at JLPT N3 — 8 practice questions below.
Practice 〜うちに →〜うちに follows the dictionary or negative plain form (忘れない) and means "while the situation still holds — before it changes", so the memo is written before the thought disappears. The volitional しておこう ("do it in advance") fits this preventive timing, while たびに, ところに, and ほどに express repetition, a moment/place, or degree rather than a fading time window.
忘れない＿＿＿メモしておこう。
Answer: うちに · Try this question →
料理は、 ___ 。
Answer: うちに · Try this question →
明るい＿＿＿山を下りよう。
Answer: うちに · Try this question →