Hey guys, thank you for your replies and for trying to helping me.
RaunchyRepublic, the fact is that I have warnings about duplicated content. I saw that once but can't find where to find in webmaster tools anymore.
How can we see the reason of the duplicated content, they tell us?
I have an theory, I have a domain.com in English, and have many subdomains with same exactly content but with different languages. For example: es.domain.com, fr.domain.com and also have a different domain with same content but with a different language. Could this could harm my website?
And another thing, someone told me that I can add a code in the websites saying that belongs to same site but they use different languages. How can I do that? Anyone knows and can explain to me how to do it?
P.S. many SEO guys who talking with said that my website was not penalized or hit by PANDA or PENGUIN updates.
Thank you guys!