The past participle doesn’t need any extra letters as the subject is a singular male. Nous sommes sortis. An -s is needed on the end of the past participle if it is all masculine or a mixed group of ...
To talk about something you did in the past, you're going to need the perfect ‎‎ tense. The perfect tense is made up of two parts. The first part is often the verb avoir ‎- ‎to have and the second ...