Point at thing, get told name. Additionally, he's been living there for a few months (?) now. Learning the very basics of conversation (greetings, my name is, etc.) is very possible even completely without reference. It's been done countless times in human history. The sad thing is he is doing absolutely nothing himself to improve this situation, just waiting for the little demon to magically know how to speak to him and putting all the burden on her.
Then he just jumps the first sight of a convenient google translate character and instead of asking her to teach him he just acts retarded.