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原句:Not until well after the rain had subsided the flood wate

来源:学生作业帮 编辑:大师作文网作业帮 分类:英语作业 时间:2024/11/10 16:22:24
原句:Not until well after the rain had subsided the flood waters began to abate.
更正:Not until well after the rain had subsided did the flood waters begin to abate.
请问为什么原句是错误的 为什么需要did并且是放在the flood waters 之前
原句:Not until well after the rain had subsided the flood wate
Not until 放在句首的时候,引起主句部分倒装,而且是部分倒装.
部分倒装即借助于动词的助动词形式do does did(具体看时态)倒装.
似乎楼主打的句子有点问题.