The second great rule of Swedish syntax governs the other clause type. While main clauses obey V2, subordinate clauses do not — they follow their own pattern, captured by the mnemonic BIFF. The single fact you must take away: in a subordinate clause, the sentence adverb (above all inte, "not") comes before the finite verb, the reverse of where it sits in a main clause. This page teaches the rule, the contrast with main clauses, and why inte's position is the most reliable diagnostic of clause type in the language.
The BIFF mnemonic
BIFF is an acronym Swedish schoolchildren learn:
I Bisats kommer Inte Före Finita verbet "In a subordinate clause, inte comes before the finite verb."
That is the whole rule in one line. A subordinate clause (bisats) is one introduced by a subordinating conjunction — att ("that"), eftersom ("because"), när ("when"), om ("if"), som ("who/which"), and so on. Inside it, the order is fixed:
conjunction + subject + sentence-adverb + finite verb + (rest)
Jag vet att han inte kommer.
I know that he isn't coming. Inside the 'att' clause: subject 'han' + adverb 'inte' + verb 'kommer'. 'Inte' sits BEFORE the verb.
Vi stannade hemma eftersom hon alltid sover länge.
We stayed home because she always sleeps late. Subordinate clause: subject 'hon' + adverb 'alltid' + verb 'sover'. The adverb precedes the verb.
The adverb wedging itself between the subject and the verb is the visible signature of a subordinate clause. In att han inte kommer, inte sits squarely in front of kommer — something that can never happen in a main clause.
Main clause vs subordinate: the same words flip
The clearest way to feel the rule is to watch one clause move between the two environments. Take "He doesn't drink coffee." As a main clause, V2 puts the verb second and inte comes after it:
Han dricker inte kaffe.
He doesn't drink coffee. MAIN clause: verb 'dricker' second, 'inte' AFTER the verb.
Now embed that same content under att ("I know that..."). It becomes a subordinate clause, BIFF kicks in, and inte jumps to before the verb:
Jag vet att han inte dricker kaffe.
I know that he doesn't drink coffee. SUBORDINATE clause: 'inte' now BEFORE the verb 'dricker'. Same words, opposite order.
The verb dricker did not stay in second position. Under subordination it slid rightward, past inte, to land after the sentence adverb. This flip is not optional and not stylistic — it is the grammatical mark of the clause type. The same happens with alltid and aldrig:
Hon kommer alltid för sent.
She's always late. MAIN clause: 'alltid' AFTER the verb 'kommer'.
Det stör mig att hon alltid kommer för sent.
It bothers me that she's always late. SUBORDINATE: 'alltid' BEFORE the verb 'kommer'.
Han svarar aldrig i telefon.
He never answers the phone. MAIN clause: 'aldrig' after 'svarar'.
Jag förstår inte varför han aldrig svarar i telefon.
I don't understand why he never answers the phone. SUBORDINATE: 'aldrig' before 'svarar'.
| Main clause (V2) | Subordinate clause (BIFF) | |
|---|---|---|
| Pattern | Subject – verb – inte | Conj. – Subject – inte – verb |
| "not" | Han drickerinte kaffe. | ...att han intedricker kaffe. |
| "always" | Hon kommer alltid sent. | ...att hon alltid kommer sent. |
| "never" | Han svarar aldrig. | ...att han aldrig svarar. |
inte's position is the diagnostic
Here is the practical payoff and the distinguishing insight of this whole page. You do not need to memorize a separate list of "subordinate word-order rules." There is one diagnostic that tells you which clause type you are in: where does inte sit relative to the verb?
- inte (or alltid, aldrig, ofta…) after the finite verb → main clause.
- inte (or alltid, aldrig, ofta…) before the finite verb → subordinate clause.
BIFF is not really a new, independent rule to learn alongside V2 — it is the visible symptom of clause type. Once you see where inte lands, you have identified the clause and predicted its entire structure:
Han ringer inte ofta, men när han inte ringer blir jag orolig.
He doesn't call often, but when he doesn't call I get worried. Main clause: 'ringer inte' (inte after). Subordinate 'när' clause: 'inte ringer' (inte before). Both in one sentence.
That single sentence contains both orders side by side: the main clause Han ringer inte with inte after the verb, and the subordinate när han inte ringer with inte before it. Reading the inte position, you can instantly tell which is which.
Why subordinate clauses lack V2
V2 evolved to mark a clause as an independent, declarative statement — the kind of clause that can stand on its own. A subordinate clause is, by definition, not standing on its own; it is a piece embedded inside another clause, already flagged as dependent by its conjunction (att, eftersom, när). Since the conjunction already announces "this is a dependent clause," there is no job left for V2 to do, and the verb simply stays in its underlying position — after the subject and after the sentence adverb. So the two rules are complementary: V2 is the badge of an independent statement; its absence (BIFF order) is the badge of a dependent clause. This is also why fronting the whole subordinate clause into a main clause's fundament triggers main-clause inversion on the main verb but leaves the subordinate clause's own internal BIFF order untouched.
Eftersom det inte fungerade, ringde vi en tekniker.
Because it wasn't working, we called a technician. The fronted 'eftersom' clause keeps BIFF inside ('inte fungerade'); the main clause then inverts ('ringde vi').
A note on sentence adverbs vs other adverbials
BIFF concerns sentence adverbs — words that comment on the truth or frequency of the whole clause: inte, aldrig, alltid, ofta, kanske, nog, säkert, verkligen. These are the ones that sit before the verb in a bisats. Ordinary manner, time, and place adverbials (snabbt, igår, hemma) are not affected the same way and generally follow the verb. If you are unsure which adverbs count, see Sentence Adverbs; for inte specifically, the full placement rules are on Placement of inte.
Jag hoppas att du snart mår bättre.
I hope you feel better soon. Subordinate clause: the sentence adverb 'snart' precedes the verb 'mår'.
Common Mistakes
❌ Jag vet att han dricker inte kaffe.
Incorrect — that's main-clause order inside a subordinate clause. After 'att', 'inte' must come BEFORE the verb.
✅ Jag vet att han inte dricker kaffe.
I know that he doesn't drink coffee.
❌ Hon sa att hon kommer inte.
Incorrect — in the 'att' clause, 'inte' precedes the verb: inte kommer.
✅ Hon sa att hon inte kommer.
She said she isn't coming.
❌ Vi gick hem eftersom det var inte roligt.
Incorrect — subordinate clause needs 'inte' before the verb: inte var.
✅ Vi gick hem eftersom det inte var roligt.
We went home because it wasn't fun.
❌ Han undrar om jag kommer aldrig i tid.
Incorrect — in the 'om' clause, 'aldrig' must precede the verb: aldrig kommer.
✅ Han undrar om jag aldrig kommer i tid.
He wonders if I never come on time.
Key Takeaways
- Subordinate clauses do not have V2. The order is conjunction + subject + sentence-adverb + finite verb.
- BIFF = I Bisats kommer Inte Före Finita verbet: in a subordinate clause, inte (and other sentence adverbs) come before the finite verb.
- This is the opposite of a main clause, where inte comes after the verb (Han dricker inte vs ...att han inte dricker).
- The position of inte is the single diagnostic for clause type: after the verb = main; before the verb = subordinate. BIFF is the visible signature of subordination, not a separate rule to memorize.
- BIFF applies to sentence adverbs (inte, aldrig, alltid, ofta, kanske, nog); ordinary manner/time/place adverbials behave differently.
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Start learning Swedish→Related Topics
- Subordinate Clauses: StructureB1 — Inside a subordinate clause Swedish abandons the V2 rule entirely and locks word order into a fixed frame: subordinator–subject–adverb–verb–rest (the BIFF rule in action). The whole clause counts as ONE element, so a fronted subordinate clause fills the main-clause first slot and forces the main verb to invert right after the comma — När jag kom hem, åt jag — a 'comma-then-verb' pattern English never produces.
- Sentence Adverbs (inte, ju, nog, väl)B1 — Sentence adverbs comment on a whole clause rather than a single verb — inte 'not', alltid 'always', aldrig 'never', kanske 'maybe' — and alongside them sit the modal particles ju, nog, väl, visst, bara that carry speaker stance English handles with tag questions and intonation. All of them share one syntactic slot, governed by V2 and the BIFF rule: after the verb in a main clause, before it in a subordinate clause.
- Placing inteA2 — Exactly where inte goes: AFTER the finite verb in a main clause (Han sover inte), after verb+subject when something is fronted (Idag sover han inte), BEFORE the finite verb in a subordinate clause (...att han inte sover), and BETWEEN the two verbs in a compound tense (Han har inte sovit / Han vill inte sova). Plus object shift: a weak pronoun object hops left over inte (Jag känner honom inte).
- The V2 Rule (Verb Second)A1 — The core law of the Swedish main clause: the finite verb occupies the SECOND position, no matter what comes first. Position one — the fundament — can hold the subject, an object, a time or place adverb, or even a whole clause, but only ONE constituent fits there, and the verb follows immediately. Crucially, V2 counts CONSTITUENTS, not words: a five-word time phrase is still 'first', so a long opener still leaves the verb right after it.