until和before有什么区别?

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until和before有什么区别?
until和before有什么区别?

until和before有什么区别?
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.
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.
这是我的珍贵的笔记,全打给你了,累...希望能帮上忙

until:
prep.&conj. 直到...为止
before:
a. 以前,在...以前
ad. 以前
prep.&conj. 在...以前

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