not...until的基本含义是直到...才,在...以前不。not…until通常与非延续性动词连用,当其位于句首时,句子要倒装。其倒装句结构为:Not until+从句/表时间的词+助动词+(主句)主语+谓语。
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倒装句结构:Not until+从句+倒转的主句(主倒从不倒)
not until 引起的时间状语置于句首时,句子的主谓应部分倒装。由 not until 引导的时间状语从句位于句首时,主句应部分倒装,从句语序不变。
例句:
Not until Father came back did we begin to have supper last night.
昨晚直到父亲回来,我们才开始吃晚饭。
Not until the teacher came in did the students stop talking.
直到老师进来学生们才停止讲话。
强调句结构:It is / was not until+从句/表时间的词+that+主句
1、not until 后边一般是时间点,如:
It was not until midnight that it stopped raining.
直到半夜雨才停下来。
It was not until the teacher came in that the students stopped talking.
直到老师进来了,学生们才停止了说话。
2、not until 后边也可以是陈述的句子,如:
It was not until he got sick seriously that he realized the value of a healthy body.
直到他生重病,他才意识到一个健康体魄的价值。
3、not until 后边还可跟介词短语,如:
It was not until after Friday that I got his reply.
直到星期五之后,我才得到他的答复。
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