Examples of using "誰かがドアをノックした。" in a sentence and their english translations:
Someone knocked on the door.
- I thought I heard someone knocking on the door.
- I thought that I heard someone knocking on the door.
She was about to go to bed when someone knocked on the door.
- She had hardly begun to read the book before someone knocked at the door.
- She'd just begun to read the book when someone knocked on the door.