翻译Since when was this

翻译Since when was this I have not watched this movie since I was a child.如何翻译? Since when have you become active?翻译 since when和since since then &since when since when 翻译句子This was atime when the two countries were at war. How long has it been since this company was established? ____have you been travelling?since i was a boy.A Since when When and where was this photo t()? when was this bridge built 被动语态 Since when has he been there?怎么翻译