I'm pretty clear about using subject or object version of pronouns.
While writing a line, I naturally wrote it in this way –
Your and my grandparents had grown listening to this piece of music.
But then, as I read, it looked incorrect. Then I tried this:
Yours and mine grandparents had grown . . . "
It looked even worse!
These are possessive cases, but still I'm confused what to use and why?
What confuses me is my own rule of breaking the sentence in two and decide what fits. If I break, it appears that . . .
Your grandparents + my grandparents = *Your and my grandparents had . . . *
What if I use possessive pronoun 'yours' this way?
"The grandparents of yours and mine had grown up . . . "
'yours' is used when the speaker refers to 'your things'. But then this particular sentence is baffling me! Because I'm the speaker and the sentence includes my possession as well!
Okay, we have 'our' as 'you' and 'I', but then the question is about using proper pronouns.
What if you tried this:
Your and her grandparents…
Or…
Yours and her grandparents…
Or…
Yours and hers grandparents…
Best Answer
I think that this is confusing because you're using your and my when we already have a word our which would normally be preferred. For this reason the sentence is a little awkward, because it's not really clear why the writer has decided to not use our here.
If you want to use your and my for emphasis, which you certainly could do, then it would be a good idea to use the marker both here to highlight this:
This sounds perfectly natural and correct.
With regards to yours and mine, this is ungrammatical. The reason for this is that in modern English we never use mine or yours when there is a following noun.
I think your last sentence is a bit awkward because there doesn't seem to be any benefit in terms of meaning or effect for using such a complex construction when our grandparents would seem to do the same job.