This is the 193rd most frequent Spanish word.
yo
"I" (first-person singular subject pronoun).
Here, 'yo' is used as the subject pronoun for 'I' to indicate the one performing the action.
Yo estoy aprendiendo a hablar español.
I am learning to speak Spanish.
In this sentence, 'yo' serves to emphasize the subject within a narrative context.
Cuando era niño, yo tenía un perro muy amistoso.
When I was a child, I had a very friendly dog.
The word 'yo' highlights the personal opinion or choice, showing contrast with another person.