noun:the time before the present; former events or periods
In the past, families gathered around a single fireplace for meals.
adjective:gone by in time and no longer existing
In past years, this town was much quieter.
adjective:former; no longer current or existing
She is a past champion of the marathon, having won three years ago.
preposition:beyond or farther than a particular point in space or time
He jogged past the library on his way to work.
