went away和is away的问题

题目

went away和is away的问题
went away是一个固定词组还是因句子时态的不同,选择用went还是is?

答案

这两个不一样：
went away 是go away的过去式:
vt.离开(走掉)
I wish he'd go away; I can't stand the sight of him.
我希望他离开,我讨厌这个家伙.
is away也是be away的一般现在时的变形:
离开
In all likelihood,we shall be away for a week.
我们很可能离开一个星期.