NOTE: 'one' is an attribute of an NP, or refers to the number (1) itself.
John knows how to count from one to ten in Hungarian.
Sally is quite petite and wears a size one.
Last night it was minus-one outside.
I have only one page left to go in this novel.
He has been complaining about his job from day one.
NOTE: one is equivalent to another NP
He is the best one among the three violinists.
Yes, that's the one I ordered.
After one date Mary thought he was the one. (one date = sense 1, the one = sense 2)
This is not the one I'm remembering.
NOTE: occurs naturally in the plural or singular
I've only got a one on me.
John pulled out three ones, two fives and a twenty.
WordNet 0.0 Sense Numbers: 5
Commentary: Idiom: at_one
Seeing sunrise on the mountain top made John felt at one with the world.
They are hardly at one when it comes to deciding how to redecorate their home.
WordNet 0.0 Sense Numbers: idiom
Commentary: Idiom: for_one
I, for one, think we should stop pretending this marketing strategy has worked for us.
Bob, for one, has decided to bicycle to work instead of driving.
WordNet 0.0 Sense Numbers: idioim