In came a man with a white beard和The door open and in he came为什么这两个倒装句不同

问题描述:

In came a man with a white beard和The door open and in he came
为什么这两个倒装句不同

这里第一个句子其实是In came a man (with a white beard)
是个完全倒装句
而第二个句子的and后面的成分是he做主语,代词做主语的话,主谓不倒装.
如: here it is. Here he comes.