A theory about how Spanish children to learn.
When Spanish children have between three and five years old more or less, they make an interesting mistake about the participle form. There's an irregular participle "roto" broken, for example, they say "el juguete esta rompido", of course that's wrong, the right one is "el juguete esta roto", but 'roto' is an irregular participle in Spanish. It's really weird because no one else says 'rompido', so they couldn't learned it by listening. According to it, some experts comment that Spanish children learned grammar structures first and after then the vocabulary, maybe!
