Originally Posted by Davidius

One difficulty in translating modern English into other Indo-European languages is that we have begun to (wrongly) end sentences with prepositions. I assume it to be the case in French, although I say this not because I have studied French, but because of my familiarity with German, Dutch, Latin, and Greek, and am willing to be corrected by someone with more knowledge of the Romance languages, that it would be odd in French to literally translate the phrase with the preposition at the end, rather than at the beginning modifying the interrogative pronoun, which is how it has always been done.