How to say “My sister moved in while her two-story house was still under construction, and for months the only way upstairs was a ladder.” in Japanese
In Japanese
姉は二階建ての新居がまだ工事中なのに引っ越しちゃって、何か月もはしごで二階に上がってたんだよ。
Ane wa nikaidate no shinkyo ga mada kōjichū na noni hikkoshichatte, nankagetsu mo hashigo de nikai ni agatteta n da yo.