看了没看了没用英文怎么说

"看了没看了没用"这个表达的意思是某物或某事已经发生，但是现在已经没有任何作用或帮助了。这个表达的来源是中文，没有一个相应的英文表达。

例句：

他明明已经知道了事情的真相，可是却依然这么做，看了没看了没用。
这道题已经做过了，再看一遍也没用，看了没看了没用。

翻译：

He clearly knew the truth, but he still did it. It's no use now that the deed is done.
I've already solved this problem. It's no use looking at it again. It's too late now.