"I once knew a chap who discharged a function" (Thespis)

I knew a chap at Cambridge once, years ago now, who wanted to be a great scientist.

Do you know a white chap named Armstrong?

Come to think of it, I know a chap who met you once.

I never knew a chap with such good shooting that was such a bad shot.

"Oh, I knew a chap who lasted two years," Kellaway said.

Listen, I know a chap who's going on leave next week.

I knew a chap on the police force and pretty irritant and pure walking around the like each day, trying to see if there's any.

I know a chap in the High Commissioner's office.

I know a chap who's working his way through Yale.