son professeur

his or her teacher

→ son
phrase Rare #25,638
his or her teacher “Son” can mean “his” or “her”; it agrees with the masculine noun professeur, not with the person who has the teacher.
FR: Son professeur explique la leçon.
EN: His teacher is explaining the lesson.

Il reprocha à son professeur son échec à l'examen d'entrée.

He blamed his teacher for his failure on the entrance exam.

Vous étiez son professeur.

You were his teacher.

— Harry Potter et le Prince de sang-mêlé (2009)

Son professeur devrait être strict avec lui.

His teacher should be strict with him.

Il s'inclina devant son professeur.

He bowed to his teacher.

Vous devriez parler à son professeur de yoga.

You should talk to his yoga teacher.

— Zootopie (2016)

L'élève a refusé d'obéir à son professeur.

The student refused to obey their teacher.

Il posa des questions stupides à son professeur.

He asked his teacher stupid questions.

Son professeur lui suggéra de lire de plus en plus de romans.

His teacher suggested that he read more and more novels.

Il fit grise mine et écouta ce que son professeur avait à dire.

He grimaced and listened to what his teacher had to say.

Il a ridiculisé son professeur.

He ridiculed his teacher.

Il travaillait d'autant plus dur qu'il voulait être apprécié de son professeur.

He worked all the harder because he wanted his teacher's approval.

Elle prend toujours en note chaque mot que son professeur dit.

She always takes note of every word her teacher says.

Son professeur est aimé par toute la classe.

Their teacher is loved by the whole class.

L'élève rebelle a osé contredire son professeur.

The rebellious student dared to contradict his teacher.