During the time that he was away,she was sad.书上的句子,但我觉得应该用when代替that,

题目

During the time that he was away,she was sad.书上的句子,但我觉得应该用when代替that,
我觉得应该用关副而不是关代，时间概念作副词呀

答案

用That或者什么都不加都是可以的,但这里不可以用when,首先,本句话是一个定语从句,time是先行词,he was away做time的定语,带进去就是：he was away during the time ,可以看出来什么成分都不缺,而when是关系副词,等于关系代词加一个介词,因此用That或者什么都不加都可以,不可以用when,不知道你明白了没有.