I had never kown it ___ she told me.请问横线处为何填until而不填before

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Ihadneverkownit___shetoldme.请问横线处为何填until而不填beforeIhadneverkownit___shetoldme.请问横线处为何填until而不填before

I had never kown it ___ she told me.请问横线处为何填until而不填before
I had never kown it ___ she told me.请问横线处为何填until而不填before

I had never kown it ___ she told me.请问横线处为何填until而不填before
before只是陈述以前的事实,用until则着重后来的变化情况.这里句子意思是直到她告诉我我才知道这件事.具体辨析如下：
until/not until是指：直到什么时候为止...其中非延续性动词用后者,延续性动词用前者.
例句：Not until my father came back did I fell asleep.
I was awake until my father came back.
注意：倒装时倒装主句,从句语序不变.改为强调句时基本语序不变.
before在...之前,常用在时间状语从句中.
常用句型：It is +( )+before...
注意：前后时态要一致,遵从主将从现原则.
祝楼主进步!
要是答案还满意的话,记得采纳哦,O(∩_∩)O谢谢~!
翻译：1...就...It was not long before he turned against his country.不久他就背叛了他的祖国.
2...才...It was a long time before he came to himself.很久之后他才恢复意识.

until
过去完成时，必须用until，而不是before, 这是语法规定

I had never kown，用的是过去完成时，用Until，表示过去我一直不知道，直到他告诉我，从语法来讲必须用它，可在实际生活交流中也无所谓，两者也可以互换，呵呵

I had never kown it ___ she told me.请问横线处为何填until而不填before i had never had it I never really had it coming I never really had it coming是什么意思 I had ever seen it before.和[I had never seen it before.]有什么区别? I had an interesting lesson that I had never forgotten it哪里错了 i found the way to let you it,i never really had it coming是什么歌? I found the way to let you it I never really had it coming 的意思翻译：It's a waste of time and I wish I had never seen it I never guessed Tom had it in him这句话中it的意思和用法 I never really had it coming .I want you to stay away from my heart . i would never believe it if i had not seen her with my own eyes英语翻译 miss is every selfish .I wish i had never given it up.what a stupid idiot ” I never really had it coming这个句子是不是错的? have had tears for you,but i never do it again I had never seen it before为什么要用过去完成时啊 You have saved my life;I shall never forget it.为什么用have不用had? I was in charge of grading all the assigned homework.I never had trouble [doing] it,为什么是doing it?