定语从句 when was the first time ____you came to my hometown

问题描述:

定语从句 when was the first time ____you came to my hometown
是填that 还是when
我认为填when因为在从句中不做主语 宾语.但是都说要填that 也没人能说明白,

That
因为when 不能连续同用..
when xxxxxx,(*) 一般这里不用when 别问为什么..反正就是这样
when ...when 听得不顺口什么的.恩.反正就是that