Have a you heard about "Blindsight"? It is about human's flight in the galaxy under the guidance of Vampire.There is the term like "black box". As if the system speaks like human by copying the phrases. When I was younger I believed in existence of the alience, but now it is 50 to 50 %. You know, if they exist I think they r already on the Earth, second, they do not need to learn our language. I think the communication of humanity and aliens will be set through  telepathy. So, I don't see the need to learn any language to speak to the aliens.