not until的句型，是前面倒装还是后面倒装

  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。

  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。

  not until we finished our work did he come.  

  有时候为了强调谓语，会把它放在主语的前面。这仅仅是语言表达的需要。 

  技巧的重要性：

  英语学习是需要技巧的，不能一味地死记硬背。

   以上内容参考：百度百科-倒装

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: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.
not until we finished our work did he come
not until midnight did he return
2.not until的强调结构为:It is / was not until+从句/表时间的词+that+.上面两句改为强调句为:③It was not until the teacher
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