france-eesti wrote:J'allais à l'école le lundi => I used to go to school on Mondays (something that you repeat, some kind of habit)
J'étais à l'école lundi dernier => I was at school last Monday (you want to point one fact, one action in the past)
J'avais raté le bus de l'école lundi dernier => I had missed the school bus last Monday => you point out one fact, even earlier in the past.
Shouldn't that be "j'ai été à l'école lundi dernier" because you're pointing out one action in the past? Et merci pour l'explication!