You will excuse me, sir," he said, "but a gentleman of the aristocracy would not behave like a Whitechapel coster.

"Single gentlemen often behave less than circumspectly, but marriage generally sets them right."

It's obvious you haven't the slightest idea how gentlemen of this century behave.

I don't know how these gentlemen behave.

The Bishop retorted, "This is not how a Christian gentleman behaves."

A gentleman would not have behaved that way.

No gentleman had ever behaved like that before.

Rush's wife remarked that the two elderly gentlemen were behaving like a couple of schoolgirls.

How an English gentleman could behave in such a manner is beyond my comprehension.

I must watch him to learn how gentlemen behave.