查字典时看到一个例句:
Considering severity of this problem,
the resultful measueres must be adopted before it going on worsening.
想请问最后的"before it going on worsening"的文法
为什么it之后可以直接加going?
中间省略了is吗?
谢谢

before的关系?

应该不是省略is 吧？