Suppose I want to write a review about a specific book. I want to include this (two forms):
- This is an essential book for everyone's bookshelf
- This is an essential book for everyone's bookshelves
Which one is correct?
This question has been linked to the one about "children crawling on their back / on their backs" but the situation is slightly different here. There it was multiple "children are crawling on their back(s)", but here 'book' is singular.
Identical in meaning:
- This is an essential book for any bookshelf (clearly singular)
- This is an essential book for all bookshelves (clearly plural)
"Everyone's bookshelf" if bookshelf is a class "Everyone's bookshelves" if bookshelf is an instance
Does the singular 'book' that starts it off stands for the abstract 'book' or an 'instance' book? The sentence is about the content, not the physical book.
What about:
- Here is a book for your bookshelf (you give someone a copy of a book, a single copy can clearly only be located in a single place).
Maybe this is one of those fuzzy parts of language where grammar professors have very strict ideas but speakers vary?
Or maybe 'bookshelves' because the singular book is not a physical book, but the book as the 'story'. In that case plural shelves is logical, because that single story translates into many physical copies.
The first answer of "They're using a cell phone" vs. "They're using cell phones", which explains 'distributive plural' versus 'distributive singular' is probably the correct answer.