would have p.p / ~했었을텐데 (하지않았다)
I think I probably would have used this weeping session as an opportunity to tell Mom everything that was going on at school with Miranda and Ella, but just as we were sitting down in front of the DVD player, the phone rang.
I would have worn a costume to a Halloween party-not the unicorn costume I made for the Halloween Parade, but the Goth girl getup that I'd worn to school.
I would have stayed mad at him longer, but then he told me about something bad that had happened to him on Halloween and I couldn't stay mad at him anymore.
You would have gotten expelled, but his parents begged the school not to expel you.
should have p.p / ~했어야만 했다 (후회)
I should have known it would be hard.
I should have brought a sandwich like you did.
I should have known it would be hard.
could have p.p / ~할수도 있었다 (하지만 하지 않았다)
I think the only person in the world I could have told any of this to was Grans, but I didn't.
We could have been partners.
You could have mentioned it to me at some point, I say quietly, pretending not to notice the big fat tear that's suddenly rolling down her cheek.
might have p.p / ~했을지도 모른다 (희박한 가능성, 추측)
I think it might have been the best time in my life.
Does August see himself as he might have looked without that single gene that caused the catastrophe of his face?