I am still having trouble understanding the usages of <ones>, <the ones>, and <those> respectively. I understand that <those> and <the ones> are often interchangeable. What makes me understand this is the use of <the>.
But I don't know what is the important difference between <ones> with no article and < the ones>, especially followed by the relative pronoun such as <which>.
As far as I know, both can be followed by the relative clause. Then how can I tell them apart?
Are both <ones> and <the ones> are always interchangeble with <those> so long as they are followed by the relative clause?
This is what I really want to learn.
I would really appreciate your help in advance.