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not until……的表达是什么意思?后面怎么倒装?

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not until……的表达是什么意思?后面怎么倒装?
not until……的表达是什么意思?后面怎么倒装?
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.如:
Not until 1998 did he return to his hometown.
直到 1998 年他才回到家乡.
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.
注意:当 not until 引导的状语或状语从句用于强调句型时,句子的主语不倒装.如将上两句改为强调句应为:
It was not until 1998 that he returned to his hometown.
It was not until Father came back that we began to have supper last night.