Possession of people or animals
Singular | 's | This is my friend's book. |
Plural ending on -s | ' | These are my sisters' books. |
Plural not ending on -s | 's | These are the children's books. |
Names ending on -s -x -z | ' / 's | This is Jess' / Jess's book. |
Possession of things
Singular | ... of ... | He was on the cover of a magazine. |
Plural | ... of ... | The noise of the machines is very loud. |
Location | ... of ... | We are in the city of London. |