问题描述:
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
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
问题解答:
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