Teacher Discussion Forums

I saw a sentence in a English text book for Chinese :It was a dream come true.



Can you explain why here "come true " not "that had come true" is used ?

I have never thought about it. But maybe it's because it's a set expression and there is some kind of elipsis there ("that had" has been omitted because you can infer it) But I'm not quite sure about it.

It's an idomatic usage.

http://www.yourdictionary.com/ahd/c/c0501000.html