We can't help understanding. We always already understand, which has nothing to do again with whether or not we're right or wrong.

我们控制不住地去理解，我们总是已经理解了，这与对错无关。

耶鲁公开课 - 文学理论导论课程节选

You want to use the "so ~ that" pattern to help you explain why you can or can't do something.

使用 “so ~ that”句型可以帮助你解释你能够或者不能够做某事的原因。

so that 课堂 - SpeakingMax英语口语达人

And we've learned a great deal about what we can do -- and shouldn't do -- to help rebuild and revitalize our cities and metropolitan areas for the future.

WHITEHOUSE: Talking Jobs with America��s Mayors

Knowing what's to come, we can't help but do the same.

WSJ: Ayrton Senna | Aggression With Lucidity | By Richard B. Woodward

And if their employer, especially if it's a small employer, wants to give them health insurance, the costs are so prohibitive that they can't do it even if the employer wants to help.

WHITEHOUSE: Online Town Hall