搞不懂句子成分A common case was when shellfish fossils found across Europe were said to be imprints of the Devil's Toenail.这个when shellfish 怎么能直接加was呢?when后面的句子怎么划分句子成分?
问题描述：
搞不懂句子成分
A common case was when shellfish fossils found across Europe were said to be imprints of the Devil's Toenail.
这个when shellfish 怎么能直接加was呢?when后面的句子怎么划分句子成分?
答