A tag question is the short question we attach to the end of a statement. The single most important rule is opposite polarity: if the statement is positive, the tag is negative; if the statement is negative, the tag is positive. They always work in opposite directions — never the same.
The tag always uses the same auxiliary verb that is in the main statement — just flipped to the opposite polarity. The skill is finding (or creating) that auxiliary. The table below covers every main case you will encounter at B1.
| Statement type | Auxiliary in statement | Tag example |
|---|---|---|
| Present Simple (no auxiliary visible) | do / does | "You live in Sofia, don't you?" "She speaks Greek, doesn't she?" |
| Past Simple (no auxiliary visible) | did | "They built it in 1876, didn't they?" |
| Present Continuous / be | am / is / are | "It is breathtaking, isn't it?" |
| Present Perfect | have / has | "You've seen it before, haven't you?" |
| Modal verbs (can, will, would, should…) | same modal | "We can visit tomorrow, can't we?" "You'd enjoy the tour, wouldn't you?" |
| "I am…" — the one exception | aren't I (not amn't I) | "I'm the first in line, aren't I?" |
| Let's… | shall we | "Let's visit the old town, shall we?" |
| Negative subjects (nobody, nothing, everyone) | positive tag | "Nobody told us it was closed, did they?" |
The same tag question can mean two different things depending on how you say it. This is the detail that makes the difference between sounding like a language learner and sounding natural. The written form is identical — only the intonation changes.
Your voice goes up on the tag. You are genuinely unsure and are actually asking for information. You do not know the answer.
Your voice goes down on the tag. You already know the answer — you are inviting the other person to agree. This is the social, conversational use.
Subordinating conjunctions join a main clause to a dependent clause, creating complex sentences. They express a logical relationship between two ideas: contrast (unexpected), reason (explanation), or purpose (intention). Using them correctly makes writing and speaking far more sophisticated — and far less "robotic".