翻译题
11.Although numerous books have been written about American mothers, only recently has literature focused on the role of a father.
【正确答案】虽然关于美国母亲的书不胜枚举，但直到最近才有以父亲这一角色为中心的作品问世。
【答案解析】主句为only recently has literature focused on the role of a father；Although…引导让步状语从句：only放在句首后接状语引导倒装句，表示强调，主语为literature。