大家好，小好来为大家解答以上问题。notuntil的用法口诀，notuntil的用法很多人还不知道，现在让我们一起来看看吧！

1、until 是直到.如:You have to stand on it until you can go against it .not until 是在...之前 如:You can not go against it until you can earn your life .until一般不放在句首,后面跟时间词连用 如：He came back until midnight.not until:可放句首,但主句要用倒装． Not until midnight did he came back home.还有一种用法与until相似． He did not come back home until midnight.until prep.(=to the time of)直到...时,到...为止 [常用在否定句中](=before)在...以前; 直到...才; 不到...(不) until his death 直到他死 until four o'clock 直到四点钟 He did not go until night.他直到夜里才走.It was not until yesterday that I noticed it.直到昨天我才注意到这件事.两个不能说区别,因为not until本来就是until的否定,表示直到.才。

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