Then it would be: "how is SHE working on you."please try again. It is the exact translation. One could replace working with effecting, to make it more commonly used English. Then it would be: "How is she effecting you". But that sounds bad in my ears. Better English would probably be: "What effect does she have on you" or maybe "what impression does she make". The question is in which context this is said. You sit in a bar with a friend and you see this girl. He says: Wie wirkt she auf dich" and you reply something like: "she doen't make me hot or cold. " or: I think she is over 18. A little bit context makes it nicer :)
Actually, and not to be picky (though it's in my job description ;-) in English common usage, the verb is "affect"; the noun is "effect."*
To my ear, "how is she affecting you?" sounds OK; so does "how does she affect you?" But you probably wouldn't use either one in a bar, in the context you mention. Rather, you'd say "what do you think of her?"
*There is a noun form of "affect" and a verb form of "effect," but each of these have different meanings from what we're discussing here. See discussion above.
Thanks. One of the problems with this sentence is that is is difficult to imagine a situation where somebody would say this sentence. Another problem is that the DUOLINGO translation: How does she seem to you? Also quite weak is, if not WRONG. Although google translate says: https://translate.google.nl/#de/en/wirkt "seem" is a possiblity. Google advices "Work" and "act". So a possible translation would be: "How does she act on you" OR "how does she operate on you" . It is very diffcult to imagine a situation where sombody would say that.
Judging from what wataya has said about the German (I can only speak for the English, as a US English speaker) the real problem seems to be that a literal translation doesn't necessarily work well here.
"How does she seem to you?" would commonly be used, for example, to mean "Does she seem to be feeling better?" or "How does she seem to be coping with losing her job / mother / house?"
"How does she operate on you?" would be an odd question in US English. Usually, a person operating on another person is a surgeon, conducting a medical operation.
"How does she act on you?" would also be an unusual sentence. I'm not sure what it would mean in any context.
Again, I can't speak for what the German sentence means, but given the barroom situation you mention, the question you'd be most likely to ask would be "How does she seem to you?" or "What do you think of her?"
It's interesting that there seems to be a difference here between the focus, or agency, in the German sentence and that in the English sentence. In the English sentence, the question is about what's going on in your head - "she" isn't actually doing anything. The German question, however, asks what "she" is doing and how that affects you.