connective N5 essential casualpolitewritten
ので — because (objective / polite)
ので
Meaning
- because / since ~ — presents the reason as an objective fact; softer and more polite than から
ので frames the cause as a plain fact rather than your personal call, so it sounds more deferential — the natural choice for excuses and requests where から would feel too blunt.
Key sentence
電車が遅れたので、遅刻しました。
Because the train was late, I was late.
Formation
| Attaches to | Form | Example |
|---|---|---|
| Clause (plain / adnominal) | plain form + ので; N / na-adj + な + ので | 静かなので / 学生なので |
Examples
頭が痛いので、早く帰ってもいいですか。
I have a headache, so may I go home early?
雨なので、試合は中止です。
Since it's raining, the match is cancelled.
When you can't use it
- ので sits awkwardly before a strong command or the speaker's bald assertion of will — for those, から is more natural. ので leans toward explaining and asking politely.
Easily confused with
See ので in real sentences
Jengo shows ので the way you actually meet it: inside real Japanese sentences, so it sticks instead of staying an abstract rule.
Study it in JengoSources Compiled with reference to A Dictionary of Advanced Japanese Grammar, A Dictionary of Basic Japanese Grammar, A Dictionary of Intermediate Japanese Grammar.