to dawn

• 天亮了。

  Dawn broke.

• 天亮之前

  before daybreak

• 天刚亮。

  It just got light.

• 天亮起床

  get up at dawn

• 天还没亮他就出门了。

  He left the house before dawn.

• 天一亮他就动身走了。

  He set off as soon as it got light.