Sentence examples for be a warning from inspiring English sources

That should be a warning.

That in itself should be a warning.

Let that be a warning.

"Let this be a warning".

The word "diet" should be a warning.

Perhaps there should be a warning label.

"Por ahora" ("For now"), it read.That should be a warning.

Our hope was that this would only be a warning".

"Our results should be a warning," said Dr. Gibson.

I understood it to be a warning: Don't be played".

Graduating college seniors, let that be a warning.