During one of our speaking lessons this week, we have reveiwed how to express possession in English. It takes particular interest the use of possessive pronouns in the expression «a friend of mine» that is completely different as it is in Spanish. Here you are the chart I showed you in class in case you want to print it.
click on the image to enlarge
Here you are a useful webpage where you can read about the possessive pronouns with lots of examples, and listen to the pronunciation.
Exercise 1: Possessive adjectives and pronouns.
Exercise 2. Change the sentences so that they have a possessive pronoun.
Exercise 3: Complete the sentences with the correct possessive pronoun.
Many exercises: Possessive adjectives and pronouns.