To Become 1) ponerse
Ejemplo:
∆ indicates physical, emotional or mental change, always followed by an adjective
Cuando mi padre oyó las noticias, se puso muy enfadado.
∆ when followed by a noun, means “to put on clothes
When my father heard the news, he became very angry.
2) hacerse
Ejemplo:
∆ to become something as a result of efforts or desires
Mi hermano se hizo bombero para ayudar a las familias durante las emergencies.
∆ may be followed by a noun or adjective
My brother became a firefighter to help families during emergencies.
3) llegar a ser
Ejemplo:
∆ to become something after a lengthy process
Después de muchos años de trabajar muy duro, yo llegué a ser Presidente de Apple Corporation.
∆ usually followed by a noun
After many years of working very hard, I became President of Apple Corporation.
4) convertirse en
Ejemplo:
∆ to turn into, or to change into (usually a physical change)
El gusano verde y feo se convirtió en una mariposa bella y colorada.
∆ most often followed by a noun.
The green, ugly worm turned into a beautiful, colored butterfly.