当Not until位于句首时,句子要倒装。 其结构为:Not until+从句/表时间的词+助动词+(主句)主语+谓语+…。 如: ①Not until the teacher came in did the students stop talking.直到老师进来学生们才停止讲话。 ②Not until next week will the sports meet be held.直到下周才开运动会。