It is high time that something were done upon it.
问题描述：
It is high time that something were done upon it.
答
这是某事完成在它的最佳时间。
答
done upon it 不是在它上的意思
It is high time that something were done upon it. ＝ 处理(针对)这事情正是时候了！
答
针对它是时候做某事了
it's high time+过去式是虚拟语气
答
这时候是使用它的高峰期
答
是时候了,该对这个采取措施了.
high time 表示"紧迫时机",后面的从句用过去时(实际上是虚拟语气),表示将要做的事情.
答
这是某样东西被在它上做的适宜时机
答
It is high time that something were done upon it.
有些事情必须要做了。