The reason why\that

来源：百度知道 编辑：UC知道 时间：2024/05/10 18:56:51
The reason ____ he was ill that day was actually made up by his brother
这道题答案给的是that 说是同位语从句，我认为不对，请高人指点，顺便说一下reason后什么时候跟why什么时候跟that，谢谢！在线等！！！！

填why

这一句是定语从句

the reason是先行词

而从句he was ill that day非常完整。

所以用关系副词why

补充：若从句结构不完整，则用关系代词which或that

例如：The reason that/which he talked about is good.

绝对是THAT