He is dreaming of becoming an astronaut.
- Él sueña en convertirse en un astronauta.
Since the accident, Tom has given up hope of becoming a professional dancer.
- Desde el accidente, Tom ha perdido la esperanza de convertirse en un bailarín profesional.
Tom wanted to become a lawyer.
- Tom quería convertirse en abogado.
His aim is to become a doctor.
- Su objetivo es convertirse en doctor.