When did she become a model for a fashion magazine
或：How old was she when she became a model for a fashion magazine
不明白的再问哟,请及时采纳,多谢!你能给我讲讲什么是特殊疑问句吗特殊疑问句： 特殊疑问词+ 一般疑问句如： Where do you live ?How long have you been at this school ?Which girl is Lucy ?