not until为句首造句

Not until I saw the score did I realize I hadn't work hard.
直到我看到分数,我才意识到自己没有努力学习.
Not until the boy's mother came home,did he go to bed.
这个男孩直到他妈妈回来才去睡觉.
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:
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.
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 came in that the students stopped talking.
④It is not until next week that the sports meet will be held.

Not until a few months later did he know the story.
直到几个月后,他才知道这件事。

He didn't raise his head until his friend call him.

Not until 12 o'ciock will teacher be in.