Vocabulary

ある日

one day; (on) a certain day

expression noun

Example sentences

One day I strolled into the woods.

But Tuesday mornings were different, because Tuesday was music day.

One day she met a wolf in the woods.

One day she was spoken to by a stranger.

One day she and I visited an old friend.

One day he went to see the doctor.

One day he was walking along the street.

It was certain that he saw her there on a certain day.