What does "sí de alegría" mean and "fellow pupil"?

Question

Hi, does anyone know what "sí de alegría" means?

And how do you say "my fellow pupil" in Spanish?

Would it be "mi alumno socio"?

Thank you.

Answer 1

"si de alegria= Yes...of happiness."

"My fellow pupil= mi companero alumno, mi companero pupilo".

Answer 2

"Si de alegría" is Yes,... of happiness

My fellow pupil is "mi colega pupilo" or "mi colega es mi pupilo"

Answer 3

Sí de alegría means like "sure, happily" kind of like that. Alegría is happiness or joy.

To say "my fellow pupil" you could say like "mi compañero alumno" or just "mi compañero"