关于一句英语Work was came to a halt when the machine broke down.

问题描述:

关于一句英语Work was came to a halt when the machine broke down.
我想请问,为什么不是come!而是came呢
如果是被动,不是应该过去分词吗?那怎么可能是came呢?

应该是:work came to a halt when the machine broke down.加了was就变成病句了.那work开头,不用用被动吗?