not until是什么意思

not until
[英][nɔt ənˈtil][美][nɑt ʌnˈtɪl]
直到…才…;

以上结果来自金山词霸

例句:

1.
But it was not until june 2nd that the first of these was allowed to fly there.
但是直到6月2号第一批批救援物资才被允许空运到那里。
2.
Not until you look at ford's balance sheet.
不，除非你看了福特的资产负债表。

until 到…为止 理解until的三个关键：一是时刻，二是持续，三是截止。所谓时刻，即until所引导的时间是一个时间点，而不是时间段；所谓持续，是指until所给的那个时刻到达前，主句一直处于一个持续状态；所谓为止，是指until所给时刻到达时，主句之前持续的状态结束后。请根据以上总结，仔细品味例句：
We will explore every avenue until we find an answer.
我们要探索一切途径，直到找到答案为止。
Can you last until I can get help?
你能支撑到有人来帮我吗？
By law, you are a child until you are 18.
按照法律规定，18岁之前是未成年人。
为什么会有not…until？既然until所引导的时刻到来之前，主句必须是持续性动作，那要描述短暂性动作，如：leave，go，come等，该怎么办呢？这就改not…until出场了。短暂性动作是一瞬间，但其否定状态则是持续的。如：leave是瞬间，但在leave发生前的过程则是持续的。所以，not…until中not所否定的动词，经常是瞬间性动词。请根据以上要点，品味例句：
We didn't leave until the very end.
我们直到最后才离开。
I won't go until I'm good and ready.
我要完全准备就绪后才走。
另外，until与so far，by，before含义接近，以后转文辨析，敬请关注。

not until的意思是“直到……才”。
until的用法：
一、until用于肯定句，表示一个动作持续到某一时刻或某一动词发生为止，引导的时间状语从句一般表示这段时间的终点，主句用延续性动词。如：
She stood there until he had passed out of sight.
I will wait till we meet again.
He ate until it was dark.
二、until用于否定句，通常与瞬间动词连用，即not until，表示“直到什么才”的意思，如：
He hadn't known the weight until he felt the freedom.
Until they had finished work, they didn't go home.
He didn't have a girlfriend until he was thirty.
He didn't enter the room until I returned.

不是到什么时候为止

直到.....才