not until用法

1、not until可接延续性动词和暂短性动词.

指的是“直到...才”的意思，如：

 I did not go home until my mother called me.

2、not until的倒装与强调结构

1、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:

Not until the teacher came in did the students stop talking.直到老师进来学生们才停止讲话

Not until next week will the sports meet be held.直到下周才开运动会

3、2、not until的强调结构为:It is / was not until+从句/表时间的词+that+.