They couldn’t understand it at the time, and nor could we.
I don’t expect children to be rude, nor do I expect to be disobeyed.
It was not my fault, nor his.
Worrall was not at the meeting, nor was he at work yesterday.
这是字典里面的几个例句,看不出 nor 前面加了 and 和不加 and 的句子有什么区别。请问这里加不加连词有一定的规则吗?还是无所谓?