Grammar guide Updated 2026-09-13
Question Tags: How to Teach Short Answers
Question tags look like a small add-on and behave like a whole lesson. A tag copies an auxiliary already in the statement, flips its polarity and replaces the subject with a pronoun, so students produce tags accurately only once be, modals, the perfect and do / does / did are automatic. This guide gives you the teaching order, the errors to pre-empt and a twenty-minute plan.
What a tag actually copies
Every correct tag copies something the student can already hear. Put a statement on the board and ask one question: which auxiliary does this sentence already contain? Once the auxiliary is found, two mechanical moves remain — flip it from affirmative to negative, or the reverse, and shrink the subject to a pronoun.
| Statement contains | Auxiliary to copy | Example |
|---|---|---|
| be | am / is / are / was / were | You're Spanish, aren't you? |
| a modal | can, will, should, must, might | She can swim, can't she? |
| the perfect | have / has / had | They've arrived, haven't they? |
| present or past simple | borrow do / does / did | He works here, doesn't he? |
| a negative statement | same auxiliary, affirmative tag | You don't smoke, do you? |
Teach the four patterns in this order
1. Be first, because nothing is hidden
With be, the auxiliary is the main verb, so students can see what to copy before they know they are looking for it: You're Spanish, aren't you? She was late, wasn't she? The only new move is the flip, so five minutes here is enough.
2. Modals and the perfect next
Modals (can, will, should, must, might) and auxiliary have behave exactly like be and copy themselves into the tag: She can drive, can't she? They've finished, haven't they? The rule has not changed, so students collect a second success in the same lesson.
3. Then do, does and did
This is where the lesson turns into work. A present simple statement such as He works in a bank contains no auxiliary at all, so the tag borrows one: doesn't he? Students must now notice an absence rather than a presence, and drill the contractions aloud: doesn't he, don't they, didn't she.
Short answers: the other half of the lesson
Tags and short answers share one habit: repeat the auxiliary and drop the main verb. Are you coming? — Yes, I am, not Yes, I come. Did she call? — No, she didn't. Has he paid? — No, he hasn't. Once students have found the auxiliary for the tag, the short answer is almost free.
Warn them about negative questions, where the answer follows the fact and not the grammar: Don't you like coffee? — Yes, I do means the person does like coffee. Ask for a short sentence until the habit settles.
The five errors to expect
Nearly every wrong tag your class produces will be one of these five.
✘ You are Spanish, isn't it? → ✔ You are Spanish, aren't you?
A tag copies the auxiliary of its own sentence. Isn't it only fits a statement built on it is, such as It's cold, isn't it?
✘ She doesn't drive, doesn't she? → ✔ She doesn't drive, does she?
Negative statements take an affirmative tag, so the polarity has to flip.
✘ He works here, isn't he? → ✔ He works here, doesn't he?
There is no auxiliary in the statement, so the tag borrows do, does or did.
✘ They've arrived, aren't they? → ✔ They've arrived, haven't they?
The auxiliary here is have, not be. Copy what is actually in the sentence.
✘ Open the door, aren't you? → ✔ Open the door, will you?
Imperatives form their own tag with will or won't, because there is no subject to replace with a pronoun.
A twenty-minute lesson plan
- Notice the auxiliary (3 minutes). Write six statements and ask students only to circle the auxiliary in each one. No tags yet.
- Flip in chorus (4 minutes). Give the affirmative auxiliary and let the class answer with the negative: is → isn't, can → can't, have → haven't.
- Add the pronoun (5 minutes). Chain the two moves with names on the board: Anna can sing → Anna can sing, can't she?
- Use them for real (5 minutes). Set a find someone who task in which every answer needs a tag before it counts.
- Close with short answers (3 minutes). Answer three of the tags in the Yes, I am / No, she hasn't style.
Practice that makes it stick
Tags are produced at conversation speed, so they need automatic practice. The free question forms drill builds the auxiliary habit underneath the tag, and the question forms guide covers the word order tags depend on. For warm-up recycling, try the tag round in our grammar warm-ups post, then push the same structures through a Quiz of the Day. Teachers can print the drill as a worksheet with or without the answer key, or build a custom set in the worksheet builder.
Take the Question Forms drill → Printable worksheets Quiz of the Day
Frequently asked questions
Why do learners say isn't it after every statement?
Because it is the tag they hear most often, and it sounds like a general-purpose check. English has no tag that fits every sentence: the tag copies an auxiliary that is already in the statement, and isn't it only works after is.
What is the difference between a question tag and a short answer?
A tag is fixed to a statement and asks the listener to confirm it: You're Spanish, aren't you? A short answer replies to a question and repeats only the auxiliary: Are you Spanish? — Yes, I am. Both depend on finding the auxiliary and dropping the main verb.
Should I teach tags with be before do and does?
Yes. Start with be because the auxiliary is visible in the statement, so the only new move is the polarity flip. Add modals and the perfect next, then do, does and did, where students also have to notice that the statement has no auxiliary at all.
How long does a tag question lesson need?
About twenty minutes for the first presentation: five minutes on noticing the auxiliary, five on the polarity flip, five on the pronoun, five on spoken practice. Expect the pattern to become automatic over weeks rather than in one session.
Do question tags appear in exams?
They appear in reading and listening texts far more often than in writing tasks, and examiners usually test them through intonation and short answers rather than tag production. A student who can hear the fall or rise of a tag understands the speaker's intention.
Keep reading
Every guide on this blog is paired with a free drill: the same rules, applied question by question, with explanations and a printable worksheet.