1、"I won't be able to finish the report until tomorrow. Not until then will I be able to send it to you."我明天才能完成报告。直到那时我才能把它寄给你。”
"We won't be able to leave for the beach until the weather clears up. Not until then will we be able to pack our bags and hit the road."直到天气转晴，我们才能去海滩。直到那时，我们才能收拾行李上路。
2、在这两个例子中，短语“ not until”用来表示某事在特定时间或事件之前不会发生。它经常被用来强调某事在某一时间点之前不会发生。
3、这里还有一些“not until”的例子:
"Not until I got to college did I realize the importance of time management."直到上了大学，我才意识到时间管理的重要性
"She didn't start feeling better until she took the medicine. Not until then did her symptoms start to improve."直到吃了药她才开始感觉好些，直到那时她的症状才开始好转。”
"We won't be able to start the project until we have all of the necessary materials. Not until then will we be able to move forward."“在我们得到所有必要的材料之前，我们无法启动这个项目。直到那时，我们才能向前迈进。”
