The bar is open, so have one on me! USAGE one as an indefinite pronoun meaning “any person indefinitely, anyone” is more formal

One can find logic in adjusting the singular this one and that one to the plural these ones and those ones. However, a quirk of English grammar is that the “ones” component becomes implicit with the plural. In other words, it’s simply one of those rules you learn as you go as you refine your linguistic knowledge. One” works as a pronoun similar to “you” and “I.” However, we rarely use it in spoken or written English. Still, it comes with a possessive form that is correct should we need it. Some people may argue that "those" refer to "specific ones", but in this case, it somehow refers to all of the chairs made of leather in general.

This is the home of one’s treasure, though we cannot speak to how one might react if they find us here.

The possessive of one ( one's) is formed the same way as the possessive of other indefinite pronouns, such as someone ( someone's), but it is used a bit differently. For most people, one is consistently used with the possessive form one's. Other indefinite pronouns can (in fact, must) be referenced in some situations with the possessive form of a third-person definite pronoun like his, her or their. Here's an example of what I mean:For example, in the case of "A chair made of wood is as good as one made of leather", this sentence is equal to "A chair made of wood is as good as a chair made of leather". The two sentences are different from "A chair made of wood is as good as that made of leather." or "A chair made of wood is as good as the one made of leather.", because they are not talking about specific ones, the determiner "the" and the pronouns that represent "specific ones", such as "that", are not needed here. The singular possessive only applies when talking about the pronoun “one” (which is a very formal way of saying “you” or “I” depending on the context). Sophie: Well, I’m doing a bit of Christmas shopping and I want your advice. Look. I’m here in the market. Wait a second, I’ll put my video on, OK? Listen, what do you think about these for your Uncle Bob? Who has it right? And more important, which (if either) of these ones and those ones can you use in your writing or speech? But the more numerous indefinite pronouns ( one, someone, somebody, nobody, another, etc.) take the usual -'s to mark the possessive.

The only time where the plural form “ones” is used is when we’re talking about an unspecified number of things or a group of objects. We never use “ones” as a pronoun, meaning there is no way for it to be possessive in nature. For this reason, “ones'” is never correct. Daisy: Well, I didn’t say ‘perfect’ exactly, but I’m sure he’ll like them. Wow, that market looks amazing. Lovely and colourful.RiMMER's answer describes yours, his, hers, ours, theirs, its as "standard" possessive pronouns. For some people, it might help to think of this instead in terms of "definite pronouns" and " indefinite pronouns". Daisy: For Ollie? Yeah, Mum, he’ll love it. No, hold on, what about that one over there, behind you? The one with the flowers on. Except to be clear in the last example, you can probably sense that adding the extra word “ones” adds more than is needed. Most native speakers will also intuit improper phrasing. Many will consider using the extra words to be poor grammar, particularly in the case of “these ones.” Why Are These Ones and Those Ones Used So Often? Chairs made of wood are as good as ones made of leather=Chairs made of wood are as good as those made of leather.