not until放在句首是什么意思?Not until they found no signs of life did rescue workers stop their efforts

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not until放在句首是什么意思?Not until they found no signs of life did rescue workers stop their efforts

not until放在句首是什么意思?Not until they found no signs of life did rescue workers stop their efforts
not until放在句首是什么意思?
Not until they found no signs of life did rescue workers stop their efforts

not until放在句首是什么意思?Not until they found no signs of life did rescue workers stop their efforts
not until (.) 是强调在(.)之前的事情.而且后面的句子一定要倒装.
这个句子的意思:在他们没有核实无生命体征之前,一直没有放弃救援工作.

恢复语序就清楚了
Rescue workers didn't stop their efforts until they found no signs of life.
直到没有发现生命迹象,救援人员才停止搜索工作。
not unitl提前后面要到装。

直到他们没有发现生命的迹象时,救援人员停止他们的努力。