As he turned them over and over and tried to fit them together they seemed to form at least a part of what had once been a hollow globe of very thin glass, perhaps a quarter of an inch or so in diameter.
The house itself was the dilapidated ruin of what had once been a fashionable residence in the days when society lived in the then suburban Bowery.
What had once been a drawing-room was now the general assembly room of the resort.
What had once been a drawing- room was now the general assembly room of the resort.
About two hundred feet back from the sea stood the forlorn ruin of what had once been, apparently, a fine stone mansion.
The boys assisted the girls over the heap of debris which held the door shut and then flashed the light around what had once been a handsomely furnished dining-room.
Located a heavy walnut desk in what had once been a library, but though there were papers enough, nothing like a deed.
He had a massive belt, in which was stuck a broken gully-knife, and round his neck was knotted the remnant of what had once been a silk bandanna.
Her voice had acquired a perpetual wail, and the corners of what had once been a pretty mouth drooped in an eternal peevishness.
The owl hooted from a corner of what had once been a belfry, and a dreamy-looking bat flew out from a cranny and struck itself headlong against a projection.
The above list will hopefully provide you with a few useful examples demonstrating the appropriate usage of "what had once been" in a variety of sentences. We hope that you will now be able to make sentences using this group of words.