I'm confused..... We recently learned how to use に行く in my Japanese class and it mostly makes sense, however I've come across a question that I don't understand. We're supposed to re-write the sentence using に行く うちに行きて、ねみませんでしたか。That's not the exact sentence but it follows the form that's used in the question. How do I keep the negative form when turning it into a verb stem + に行く sentence. Thanks!