Plagiarism: tag questions

A tag question is a short question added to the end of a statement to confirm or check it. Rule: a positive statement takes a negative tag, a negative statement takes a positive tag: You wrote this yourself, didn’t you? You didn’t copy it, did you? The tag repeats the auxiliary or modal verb; if there is none we use do/does/did: She cites her sources, doesn’t she? Exceptions: I am → aren’t I?; Let’s → shall we?; imperatives → will you?; There is → isn’t there?; nobody/everyone → they. A falling tone means you expect agreement; a rising tone means you really ask. Plagiarism means presenting someone else’s ideas or words as your own.