问:that可以用作关系副词吗?
答:that引导定语从句,除了用作关系代词外,也可用作关系副词。这种用法见于下面两种情况: ①先行词是表示时间的名词时,可用that 代替when引导定语从句,that也可以省略。例如:
I left the day that she came. 她来的那天,我走了。
He was my good friend during the years that I was in the countryside.他是我在农村时期的好朋友。
It’s time (that) we went to bed.是我们就寝的时候了。 ②先行词是表示原因或方式的名词时,that相当于介词+which,可以引导的定语从句,that也可以省略。例如:
She likes the child for the very reason that (=for which) she loves his father. 她喜欢那孩子的原因是正是她爱他的父亲的原因。
He didn’t like the way that (=in which) she speaks to his mother. 他不喜欢她对他的母亲那样说话。
Imagine the speed that (=at which) he drives the car. 很难想象,他开车开得那么快。
The reason (that /for which /why) he came here was to ask for our help.他来这里的原因是寻求我们的帮助。