〜際に
JLPT N3:when (formal)
A formal "when" or "on the occasion of", common in business, notices and announcements.
How to form it
- Verbs use the dictionary or た-form: 利用する際に (when using), 帰る際に.
- Nouns take の: お帰りの際に (when you leave).
- 際は and 際 alone are also common: 緊急の際は (in an emergency).
Examples
お帰りの際に、ご連絡ください。
Please let us know when you leave.
緊急の際は、この番号に電話してください。
In an emergency, please call this number.
Notes
- It sounds official. In conversation, use 〜時.
Similar meaning
- 〜時when
The everyday "when".