It dawned on (me/her/us/...)
1.It took a while to dawn on me that I would have to find something else
to do with my time other
than music.
2.When it did dawn on me it was too late.
3.Gradually it began to dawn on me that I was the only one there who was
in favor of the project.
4. It didn't dawn on me that she was cheating on me until after we had
gotten engaged.
目からうろこが落ちる・急に目が覚める