a pris le mauvais train
He took the wrong train by mistake.
Il a pris le mauvais train par erreur.
It seems that they took the wrong train.
On dirait qu’ils ont pris le mauvais train.
I'm afraid I took the wrong train.
J’ai bien peur d’avoir pris le mauvais train.
Marie took the wrong train.
Marie a pris le mauvais train.
Tom took the wrong train.
Tom a pris le mauvais train.