until结构与not until结构使用的词有什么区别

UNTIL 一定要与延续性动词连用 NOT UNTIL 可与短暂性动词连用 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.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