not until倒装句是：Not until+从句/表时间的词+助动词+(主句)主语+谓语+...。

当Not until位于句首时，句子要倒装。not until的强调结构为It is / was not until+从句/表时间的词+that+...。现在的用法属于notuntil的强调结构，这种用法很常见。

例句

1、Notuntilthey pointed out my fault to me did I realize it .

直到他们指出了我的错误，我才意识到。

2、Notuntilabout ten million years later did species of whales develop specialized kidneys enabling them to drink salt water.

直到大约1000万年后，鲸类才进化出专门的肾脏，使它们能够饮用盐水。

3、NotuntilCharlie graduates from college.

要等到查理大学毕业才行。