Using commas with contrasting elements, interjections, direct address, and tag questions

CONTRASTING ELEMENTS

On official business it was she, not my father, one would usually hear on the phone or in stores.

—RICHARD RODRIGUEZ, “Aria: A Memoir of a Bilingual Childhood”

INTERJECTIONS

My God, who wouldn’t want a wife?

—JUDY BRADY, “I Want a Wife”

DIRECT ADDRESS

Remember, sir, that you are under oath.

TAG QUESTIONS

The governor did not veto the unemployment bill, did she?