zhan nan was stay at home yesterday 这句话不对?

问题描述:

zhan nan was stay at home yesterday 这句话不对?

不对
zhan nan was at home yesterday
zhan nan stayed at home yesterday
上面两个都行为什么不能be动词+动词?be+动词表示正在进行,这里不表示正在进行,只表示一般的过去式