Tag Questions

Tag questions are short questions added to the end of a statement to ask for confirmation or invite agreement. They follow one rule that never changes, applied across five auxiliary categories:

The 2-Rule Formula: [Statement] + [reversed-polarity auxiliary] + [subject pronoun]?

• She is a teacher, isn't she? (positive → negative tag)
• They aren't coming, are they? (negative → positive tag)

This lesson builds from A2 basics to B2 advanced usage in five steps:

1. The core rule — polarity reversal + echo the auxiliary (be, do, does, did)
2. Perfect tenses & future — have/has/had, will/won't, be going to
3. Modal verb tags — can, could, should, would, must, might
4. Special cases — "aren't I", "shall we", imperatives, there is/are, indefinite pronouns
5. Semi-negatives & advanced tags — hardly, never, seldom, used to, had better

Note: Tag questions are structurally different from wh- questions. If you need to review how to form open-ended questions, see Wh- Questions first.

The Core Rule: Polarity & Echo

Every tag question follows the same two-part rule:

Auxiliary Reference: Be, Do, Does, Did

⚠️ The Wrong-Auxiliary Trap When the statement uses a form of be (is/are/was/were), always echo the be verb in the tag — never switch to do/don't.

❌ Incorrect	✅ Correct	Why
She is a teacher, doesn't she?	She is a teacher, isn't she?	Statement uses is → tag must use is/isn't, not do/don't
You are coming, don't you?	You are coming, aren't you?	Statement uses are → tag must use are/aren't
He is reading, doesn't he?	He is reading, isn't he?	Present continuous uses is → echo is

When There Is No Auxiliary: Use Do/Does/Did

For statements in the present simple or past simple that have no visible auxiliary, add do/does/did to form the tag:

👉 Practice Core Tags with Be, Do & Did →

Perfect Tenses & Future Tags

The same two rules apply, but the auxiliary changes depending on the tense.

Present Perfect & Past Perfect

Use have, has, or had in the tag — matching whichever form the statement uses:

Tip: Never substitute did/didn't for have/has/had in perfect tense tags.

• She has finished, didn't she? ❌ → She has finished, hasn't she? ✅

Present perfect continuous: The same rule applies — the tag echoes has or have:

• He has been working here for ten years, hasn't he? ✅ (tag echoes has)

Semi-Negative Words in Perfect Tenses

The word never makes a present-perfect statement negative, so the tag must be positive:

• He had never visited London before that trip, had he? ("had never visited" is negative → positive tag "had he")

Future Tags: Will vs Be Going To

⭐ "Be going to" uses be — not will — in the tag. Learners often write "She is going to move, won't she?" — this is incorrect. With be going to, the auxiliary is the be verb, so the tag echoes be:

• She is going to move, isn't she? ✅

👉 Practice Perfect Tenses & Future Tags →

Modal Verb Tags

When a statement contains a modal verb, repeat that same modal in the tag. Each modal keeps its own form — never replace a modal with do/does/did.

Modal Tag Reference Table

Examples

Note on "mightn't": This form is uncommon in everyday American English, but it is grammatically correct and standard in British English. In informal speech, speakers sometimes use "Tom might come, might he not?" — but mightn't he is the correct written form.

⚠️ Check the auxiliary first. Not every sentence contains a modal. If the statement uses is/are/do/does, echo that — not a modal:

• He is very tall, isn't he? ✅ (not a modal sentence; uses is)

👉 Practice Modal Verb Tags →

⭐ Special Cases: 5 Fixed Forms

These five patterns have irregular or fixed tags that do not follow the standard rule. They are the most frequently tested and most commonly confused tag forms.

4.1 — "I am" → "aren't I"

The tag for positive "I am" is "aren't I" — this is the only irregular tag in English. The form "amn't I" does not exist in standard English.

Summary: "I am" → "aren't I" (positive → negative, irregular form) "I'm not" → "am I" (negative → positive, regular)

4.2 — "Let's" → "shall we"

"Let's" (let us) always takes the fixed tag "shall we", whether the sentence is positive or negative. There is no other option.

• Let's go to the beach, shall we? ✅
• Let's not argue about this, shall we? ✅ (Let's not → still "shall we")

4.3 — Imperatives → "will you" / "won't you"

Imperative sentences (commands and requests) use "will you" as the standard tag. For polite invitations, "won't you" adds a warm, inviting tone.

4.4 — "There is/are" → tag uses "there"

When the grammatical subject of the statement is "there" (existential), use "there" in the tag — not "it" or "they".

4.5 — Indefinite Pronouns → "they" or "it"

When the subject of the statement is an indefinite pronoun, replace it with the correct pronoun in the tag:

⚠️ The pronoun depends on meaning, not grammar alone:

• People pronouns (everybody, someone, noone) → they
• Thing pronouns (everything, something, nothing) → it
• Existential "there" → stays there (not they or it)

👉 Practice Special Cases →

⚠️ Semi-Negatives & Advanced Tags

Semi-Negative Words

Some adverbs and determiners are semi-negative — they make a statement effectively negative, even though the statement looks positive on the surface. Always use a positive tag after them.

⚠️ The Semi-Negative Test: If you can substitute "almost never" or "almost no" for the word, it is semi-negative and requires a positive tag.

"Few" and "Little" — Negative without "a"

The determiners few and little (without a) function as semi-negatives.

⚠️ "A few" and "a little" are POSITIVE. Only few and little (without a) are semi-negative.

"Used to" → Didn't in the Tag

The construction "used to" uses "didn't" in its tag in modern standard English:

• You used to live in Tokyo, didn't you? ✅
• She used to be a dancer, didn't she? ✅

Note: The form "usedn't you" exists in very formal British English but is rare. "Didn't" is the accepted standard.

"Had Better" → Hadn't

The construction "had better" uses "hadn't" in the tag:

• You had better leave now, hadn't you? ✅ (positive → negative)
• He had better not make that mistake again, had he? ✅ (negative → positive)

"Ought to" → Oughtn't

The modal "ought to" follows the same pattern as other modals (see Section 3):

• We ought to tell them, oughtn't we? ✅ (positive → negative)
• We ought not to be late, ought we? ✅ (negative → positive)

👉 Practice Semi-Negatives & Advanced Tags →

Common Mistakes to Avoid

Quick Summary

The 5-Step Decision Procedure

Use this checklist every time you form a tag question:

Auxiliary Quick Reference

Practice Tips

1. Always check the auxiliary first, before thinking about polarity. The most common error is echoing the wrong verb. Ask: "What is the actual auxiliary in this statement?" — be careful not to confuse be with do.
2. Memorise the 5 special cases as a fixed list. Write them on a card: aren't I / shall we / will you / there / they or it. These are exceptions that do not respond to general analysis — they must be memorised.
3. For semi-negatives, highlight the trigger word. When you see hardly, never, seldom, rarely, barely, scarcely, immediately flag the statement as negative. Train yourself to spot these before deciding on polarity.
4. Practise "a few vs few" with real sentences. The meaning shifts dramatically: "A few people came" is a positive result; "Few people came" is a disappointment. Getting the tag right reinforces the meaning.
5. Read tag questions aloud. In real speech, tag questions have a rising intonation (genuine question) or falling intonation (expecting agreement). Saying them aloud helps you internalise the rhythm and spot errors by ear.

Practice All Exercises

Ready to practise tag questions in English? These question tags exercises online — with answers and detailed explanations for every question — cover all five levels from A2 basics to B2 advanced. Printable tag questions exercises PDF and question tags exercises PDF worksheets are also available for offline practice. Start with the easy tag questions exercises for A2 beginners (Sets 1–2) and work up to the B2 challenge. Work through all five sets of tag questions exercises: be, do/does/did, modal verbs, special cases such as aren't I and shall we, semi-negative words like hardly and never, and a final B2 mixed review:

Now try the exercises to practise what you've learned!