"Il habite.... dans une maison moins modeste que je ne l'aurais supposé, mais qu'il partage, ai-je cru comprendre, avec tois de ses frères et leurs familles." (Périple de Baldassare par Amin Maalouf). This is a sentence from a diary of the main character, talking about events occuring during the day. Why is the inversion? Why is the mixing of the present with the "passé composé"? I tried to look up inversion in the "Le bon usage", but I got lost. I also know about the usage of the present, talking about past event, yet here the narrator, strangely (for me) falls back to past tense as well. Thanks for any help.