准确的说：Not until要放在一起并提前至句首。其基本结构为：Not until + 状语（从句）+ 部分倒装的句子主干/主句（be/助动词/情态动词 + 主语 +...）如：I didn't go to bed until 11:30 p.m.倒装成：Not until 11:30 p.m. did I go to bed.再如：I didn't leave until he returned.倒装成：Not until he returned did l leave.如果对你有所帮助，请点击我回答下面的“选为满意回答”按钮，谢谢！
