Learn Italian: Tua zia e mia nonna sono qui. - Your aunt and my grandmother are here.

This is a special rule in Italian! Normally, possessive words need a definite article (like la mia macchina for 'my car'). However, when you are talking about a singular family member (like zia or nonna), you drop the article. So, it is just tua zia and mia nonna.

Why do we use tua and mia instead of tuo and mio?

Possessive words in Italian must match the gender of the noun they describe, not the gender of the person speaking. Because zia (aunt) and nonna (grandmother) are both feminine words, you must use the feminine forms tua and mia.

Zia and nonna are singular words, so why is the plural verb sono used here?

Even though the aunt and grandmother are individually singular, they are joined by e (and). Together, they make a plural subject (meaning 'they' or loro). Therefore, you must use the plural verb sono (they are) rather than the singular è (is).

I have seen qua used for 'here'. Could I use that instead of qui?