Watch two people who know each other well, and you’ll notice their sentences keep reaching out for a nod. “Long day, wasn’t it?” “You’ll sort it out, won’t you?” Those little clip-on endings are question tags, and they’re doing quiet social work: turning a flat statement into an invitation to agree, react, or reassure. Learners often skip them and end up sounding oddly formal, like someone reading aloud. Get them right and your English suddenly has warmth.
Here’s the good news. The whole system runs on one rule you can see coming a mile off. Learn that, patch in a handful of oddballs, and you’re done.
The mirror rule
A tag is the opposite polarity of the statement it hangs off. Positive statement, negative tag. Negative statement, positive tag. That’s it. The sentence says one thing; the tag flips it back like a mirror.
You can hear why this works. If you already lean one way, the tag leans the other to leave room for the listener to push back. A statement that’s all in one direction wouldn’t be asking anything.
So:
“Maria’s finished the report, hasn’t she?”
“Maria hasn’t finished the report, has she?”
Same content, opposite tags, because the statements have opposite polarity. Once the mirror rule is in your head, nine tags out of ten write themselves.
Matching the auxiliary
The tag doesn’t repeat the main verb. It grabs the auxiliary (the helper verb) from the statement and reuses it, plus the subject as a pronoun. So you match two things: the auxiliary and the tense.
If there’s an auxiliary already sitting in the sentence, use that one:
“Alex can drive, can’t he?”
“They will be there by six, won’t they?”
“You’ve met Sam before, haven’t you?”
If there’s no auxiliary, the statement is using the present or past simple, and you borrow do, does, or did to build the tag:
“You know Tokyo well, don’t you?”
“She lives near the station, doesn’t she?”
“They left early, didn’t they?”
Notice the tense carries across. Past statement, past tag. The verb left is past, so the tag reaches for did, not do.
The special cases worth memorising
A few tags refuse to follow the mirror rule cleanly. There aren’t many, and they come up constantly, so learn them as fixed phrases rather than trying to reason them out mid-sentence.
“I am” flips to “aren’t I”
Logic would give you amn’t I, which nobody says. English quietly borrows the plural form instead:
“I’m invited, aren’t I?”
Imperatives take “will you” or “won’t you”
Give an instruction and the tag softens it into a request:
“Pass me the salt, will you?”
“Sit down, won’t you?” (a shade more welcoming)
And a negative instruction just uses will you:
“Don’t tell Alex, will you?”
“Let’s” takes “shall we”
A suggestion opens with let’s and closes with a completely different tag:
“Let’s grab a coffee, shall we?”
“There is” keeps “there”
When a sentence starts with there is or there are, the word there behaves like the subject and stays in the tag:
“There’s a problem, isn’t there?”
“Everyone” becomes “they”
Words like everyone, somebody, and nobody are grammatically singular but feel plural, so the tag uses they:
“Everyone signed the card, didn’t they?”
And a sneaky one: nobody, nothing, and never already carry a negative meaning, so the statement counts as negative and takes a positive tag:
“Nobody called, did they?”
The twist nobody teaches: intonation
Here’s where the same words split into two completely different meanings, and it’s all in your voice.
Say a tag with a falling tone (your pitch drops at the end) and you’re not really asking. You already know the answer and you’re fishing for agreement, filling a silence, or making small talk.
“Lovely weather, isn’t it?” ↘ — You both know it is. You want a nod, not information.
Say the same tag with a rising tone (pitch climbs at the end) and it becomes a genuine question. You’re actually unsure and you want an answer.
“You locked the door, didn’t you?” ↗ — Now you’re worried. That’s a real request for confirmation.
Putting it together
Run any tag through three quick checks and you’ll rarely slip:
First, flip the polarity. Positive out, negative back, or the reverse. Second, find the auxiliary (or borrow do/does/did if there isn’t one) and match the tense. Third, turn the subject into a pronoun. Then decide your tone based on whether you actually want an answer.
“Sam hadn’t seen the email, had he?” Negative statement, so positive tag. Auxiliary had is already there. Subject becomes he. Done.
Do that a few dozen times in real conversation and it stops being a calculation. It becomes the reflex that makes you sound like someone who belongs in the room.
Frequently asked questions
Can I use “right?” or “yeah?” instead of a proper question tag?
Yes, in casual speech. <em>“You’re coming, right?”</em> and <em>“We said Tuesday, yeah?”</em> both work and skip the grammar entirely. They’re informal, so keep them out of writing and formal settings, but they’re everywhere in relaxed conversation.
What’s a “same-way” tag, like “So you’re leaving, are you?”
That’s a positive statement with a positive tag, and it breaks the mirror rule on purpose. It signals interest, surprise, or a slightly challenging tone rather than seeking agreement. It’s advanced and easy to get wrong, so learn the standard opposite-polarity tags solidly first.
Why do people say “innit” for everything?
<em>Innit</em> is a very informal British contraction of <em>isn’t it</em>, and in casual speech some speakers stretch it to cover any tag: <em>“You went yesterday, innit?”</em> It’s slang, not standard grammar, so understand it but don’t rely on it.
Is the tag after “I think” based on “I” or the rest?
On the rest. <em>“I think Maria’s ready, isn’t she?”</em> — the tag matches <em>Maria’s ready</em>, not <em>I think</em>. The main clause verb of thinking is essentially transparent for the tag.