んです
Usage
Asking listener to confirm + When giving a reason or expiation In reply to a sentence with んです.
Examples
雨が降っているんですかIs it raining?
バスが来なかったんです...Because the bus didn't come
Good to know
のです in writing.
Asking listener to confirm + When giving a reason or expiation In reply to a sentence with んです.
のです in writing.