Tom doesn't want to give up his dream of becoming an astronaut.
- Tom no quiere renunciar a su sueño de convertirse en un astronauta.
He realized his dream of becoming an artist.
- Él cumplió su sueño de convertirse en un artista.
His aim is to become a doctor.
- Su objetivo es convertirse en doctor.
Kenji decided to become a cook.
- Kenji decidió convertirse en chef.