Once my mother was ill and had stayde in the bed for several day.有什么错

had stayed改为had to stay

分析:此句为一般过去式的简单句,但在这个句子里却出现了不合语法的"had stayed"（过去完成时）

正：Once my mother was ill and had to stay in the bed for several day.

stayde？stayed吧~

改成:Once my mother was ill and had stayed in bed for several days

我妈妈曾生病，卧床养病好几天。

一个句子的时态要保持一致。
once 的出现一般表明要用一般过去式，并且有and 连接，所以就把后面的过去完成时had stayed 该为一般过去时就可以了，即stayed.
如：Once my mother was ill and stayed in the bed for several days.