你干着急顶什么用？

What's the use of just worrying and doing nothing about it?

够不到那树枝，让人干着急。

The branch was tantalizingly out of reach.

他什么事也不会干，只会干着急！

He could do nothing but worry.

看着他拙嘴笨舌的样子，她在旁边都干着急。

Hearing his clumsy-tongued manner, she can do nothing but stand anxiously by his side.