you can't be
You can't be a woman.
Cada segundo cuenta y no puedes ser tu madre.
Every second counts, and you can't be your own mother.
— Ratatouille (2007)
You can't be friends with everyone.
You can't be my teacher.
No puedes ser demasiado cuidadoso cuando conduces un auto.
You can't be too careful when you're driving a car.
No puedes ser muy cuidadoso cuando haces este experimento.
You can't be too careful when conducting this experiment.
No puedes ser una estrella en el cielo, así que sé una lámpara en la casa.
You can't be a star in the sky, so be a lamp in the house.