modality N3 uncommon casual
〜ことなのだ — the fact is that ~
〜ことなのだ
Builds on こと
Meaning
- the (real) point is that ~ / it's a matter of ~ — explanatory のだ attached to a こと-nominalized fact, presenting it as the heart of the matter
Key sentence
大切なのは、毎日続けることなのだ。
What matters is to keep it up every day.
Formation
| Attaches to | Form | Example |
|---|---|---|
| Verb/clause nominalized with こと + な + のだ | 〜こと + な + のだ | 必要なのは、休むことなのだ |
Examples
問題は、誰がやるかということなのだ。
The question is who's going to do it.
彼が言いたいのは、もっと練習することなのだ。
What he wants to say is that we should practice more.
Easily confused with
See 〜ことなのだ in real sentences
Jengo shows 〜ことなのだ the way you actually meet it: inside real Japanese sentences, so it sticks instead of staying an abstract rule.
Study it in JengoSources Compiled from published Japanese grammar references. Editorial confidence: low.