Aside from the fact that they have numerous forms for different grammatical
persons, gender, and number, possessive adjectives and pronouns are pretty
similar in Spanish and English.
However, to say that something is belongs to someone, where you would use 's
or s' in English, you have to use the preposition de. In addition, you have to
invert the possessor and the possessee and put de between them.
el coche de Pablo
Pablo's car (literally, the car of Pablo)
las llaves de mis padres
my parents' keys (literally, the keys of my parents)
Click these links to learn more about the three ways to express possession in