If the main clause is positive, the tag is negative.
You are a student, aren't you?
She likes tea, doesn't she?
They went home, didn't they?
If the main clause is negative, the tag is positive.
You aren't cold, are you?
He doesn't smoke, does he?
She hasn't left yet, has she?
| Example / Question | Positive / Short Answer | Negative / Short Answer |
|---|---|---|
| Positive: You like pizza | You like pizza, don't you? | Tag: don't you? |
| Negative: She isn't home | She isn't home, is she? | Tag: is she? |
| Special: I am right | I am right, aren't I? | Tag: aren't I? |
| Rule | Base / Standard Form | Applied Form |
|---|---|---|
| Polarity Reversal Principle | Positive clause requires Negative tag (+ → -). Negative clause requires Positive tag (- → +). | She is nice, isn't she? vs She isn't nice, is she? |
| Auxiliary & Pronoun Matching Rule | The tag MUST use the same auxiliary verb as the main clause and a subject pronoun (he, she, it, they, we). | John likes tea, doesn't HE? (NOT "doesn't John?") |
| Negative Word Trigger Rule | Sentences containing negative words (never, nobody, nothing, seldom, hardly) take a POSITIVE tag! | Nobody called, DID THEY? |
Falling intonation = expecting agreement; Rising intonation = genuine question.
Make commands sound like polite requests.
Invite someone to join an action.
Replace "this" or "that" with "it" in the tag: "That is your coat, isn't IT?"
Replace "these" or "those" with "they" in the tag: "These are your keys, aren't THEY?"
If your voice goes DOWN (falling tone), you are not really asking; you expect agreement. If your voice goes UP (rising tone), it is a real question and you want to find out.