not...until..表示-直到..才.. 那应该如何造句？

She won't know until I tell her.
We can not work until midnight.

这是我的英语老师课上讲的例句

I don`t know what happened until you tell me.

He has not gone to bed until his mother come back.

I did not go to bed until I finished my homework (我直到完成作业才睡觉.not前加系动词,它表示的动作发生在 until引导的从句前.