"Corinna comes into the city."
Translation:Corinna in urbem venit.
-it -> third person singular : he or she or it is doing the action. Venit : 'he/she/it comes'
-is -> second person singular : you (one person) are doing the action. Venis : 'You (one person) come'
-itis -> second person plural : you (multiple people) are doing the action. Venitis : 'You (multiple people) come'