To express meanings “The car of Tom” and “One of the cars of Tom”, which articles do I put before “Tom’s car”?
And in general, if an article appears before <somebody>’s <something>, which word does it belong to? Is it <somebody> or <something>?
To express meanings “The car of Tom” and “One of the cars of Tom”, which articles do I put before “Tom’s car”?
And in general, if an article appears before <somebody>’s <something>, which word does it belong to? Is it <somebody> or <something>?
"Tom's car" means "the car of Tom", and "Tom's" is a definite determiner, which functions like "the". If you want an indefinite, you have to use a different construction: "a car of Tom's".
An indefinite article can occur at the beginning of a possessive construction, e.g. "a man's car", but this is still a definite noun phrase, since it means "the car of a man" -- the indefinite "a" goes with "man", not "car", and "a man's" is a definite determiner.
In general, you can build a possessive definite determiner by adding "'s" to a noun phrase: "[the old man]'s car", "[a lady who I used to know]'s car". However, so far as I know, you can't make a possessive determiner from a nominalized sentence by adding "'s", even though it is a noun phrase.