When do you use suus, a, um and when do you use eius or eorum in Latin? A look at pronouns and possessive adjectives. — “He saw his teacher the other day. No, not his own teacher, John’s teacher.” In English, possessive pronouns can be confusing. “His” can refer to “his own” or someone else’s. In Latin, it is easier to tell. Here’s how it works. [Note: If you know the basics and want to…