通不过cannot get through

• 路窄，汽车过不去。

  It's a narrow road, so cars cannot get through.

• 这里桥冲坏了，过不去。

  The bridge here has been washed away. There is no way over.

对付不了to be unacceptable

为难to make things difficult for someone

• 他对你不会过不去。

  He won't make anything difficult for you.

过意不去to feel sorry

• 让他白跑一趟，我心里真过不去。

  I felt really sorry for making him go all that way for nothing.