So you must have been, for you look as young and handsome as when I last saw you, Mary.
You must have been interested in the men who governed France.
Surely, Wyllard, you must have been struck by the manner of your wife's kinsman under my examination.
As to your own sensations, when you went to see the house, I would suggest that they were due to a vivid imagination; you must have been brooding, in a semiconscious way, over what you had heard.
Surely, surely, you must have been dreaming, Villiers, you were always rather fanciful.
Manabozho, with well-feigned surprise, "no; you must have been looking at me.
Manabozho," said the old wolf, "you must have been looking or you would not have got hurt.
Trust me, my dear friend, you must have beenslightly in liquor, and saw double.
The above list will hopefully provide you with a few useful examples demonstrating the appropriate usage of "you must have been" in a variety of sentences. We hope that you will now be able to make sentences using this group of words.