Student or Learner
"There's a job coming up. I was hoping Don was going to be here by now." OK?
"There's a job coming up. I was hoping Don would have been here by now." OK?
If both OK, what would be the difference?
The problem with the first is that Don might have been going to be there. The fact that he wasn't there is not an indication of his not intending to be there. (If you don't understand this, don't worry about it.)