Grammar › N4 · 06 Reasons, purposes & contrast

〜んです: explaining; it's that...

N4 · 06 Reasons, purposes & contrast

Frames a sentence as an explanation or request for one.

Plain form + んです (na-adjective / noun + なんです). Casual: んだ / の. Used for reasons, asking why, and softening. Not a plain statement of fact.

Examples

どうしたんですか。

What happened? (What's the matter?)

実じつは、財布さいふを忘わすれたんです。

Actually, I forgot my wallet.