A friend of +possessive
This is a great grammar point! The phrase "a friend of + possessive" can be a bit tricky. Here's the breakdown: The "Double Genitive" This construction, like "a friend of John's," is called the "double genitive" because it uses two ways to show possession: "of" : This preposition indicates a relationship or belonging. "'s" : This apostrophe + s also shows possession. Why Use It? The double genitive is used to show that the person or thing mentioned is one of a group. It implies "one of the friends of John." Examples "A friend of my father's is visiting us." (One of my father's friends) "She's a friend of Sarah's from college." (One of Sarah's friends from college) "He's a friend of the band's." (One of the band's friends) Alternatives You can often rephrase these sentences to avoid the double genitive: "One of my father's frie...