Sentence examples for it has once from inspiring English sources

A third in a manner does not even know what he has done, but he is like a vine which has produced grapes, and seeks for nothing more after it has once produced its proper fruit.

In fine, it is impossible to prevent, and only great simplicity can hope to prevent, human nature doing what it has once set its mind upon, by force of law or by any other deterrent force whatsoever.

But it has not yet faced the storms that would test whether it has once again secured its place as "a great engine of state" within a modern constitution.

(During the 1990s it went through an unfortunate period when it was called the HUSA Palace, but it has once again returned to its original name and glory).

But you'd have to say, it's lucky for Canada, too, if it has once again been able to postpone its day of reckoning, to a time when its neighbour and main trading partner is on the mend.

It has once again been delayed.

Because it was dead, its form intimated painfully that it had once been alive.

It had once been a mill town.

It had once been paralyzed, like me.

It had once been great, he says.

It had once been a caretaker's cabin.