A Danish main clause and a Danish subordinate clause are built from different blueprints, and the difference is invisible until you trip over it. The two changes are simple to state — in a subordinate clause there is no V2 inversion, and a sentence adverb like ikke comes before the finite verb instead of after it — but they produce the second-most-common Danish word-order error there is, right behind forgetting V2. English gives you no warning, because in English a clause is a clause: word order doesn't change when you put that or because in front of it. In Danish it changes a great deal.
The two templates, side by side
The cleanest way to see this is a minimal pair. Take the main clause Jeg spiser ikke fisk ("I don't eat fish") and embed it under at ("that"):
Jeg spiser ikke fisk.
I don't eat fish. (main clause)
Hun ved godt, at jeg ikke spiser fisk.
She knows that I don't eat fish. (subordinate clause)
Look at what moved. In the main clause the order is subject – verb – ikke (jeg spiser ikke). In the subordinate clause it is subject – ikke – verb (jeg ikke spiser). The verb and the adverb have swapped places. That swap is the whole lesson.
Change one: no V2 inversion
A main clause is verb-second (V2): the finite verb is the second element, and if anything other than the subject comes first, the subject is forced behind the verb (inversion). A subordinate clause does not play this game. After the subordinating conjunction, the subject comes first, then the verb, in plain subject–verb order — no inversion, no matter what.
This matters most when a subordinate clause is fronted. Consider:
Da vi kom hjem, var børnene allerede i seng.
When we got home, the children were already in bed.
The subordinate clause Da vi kom hjem keeps subject–verb order internally (vi kom, not kom vi). But the main clause that follows it does invert — var børnene — because the entire subordinate clause counts as the fronted first element, triggering V2 in the main clause. This is the classic two-part shape: subordinate clause stays uninverted inside itself; the main clause around it obeys V2. (That second half is covered in syntax/inversion.)
A subordinate clause never inverts even when it contains a question word, because an embedded question is grammatically subordinate:
Jeg ved ikke, hvor han bor.
I don't know where he lives.
Notice hvor han bor — subject before verb — not hvor bor han (which would be a direct question). English uses the same uninverted order in embedded questions ("where he lives", not "where does he live"), so this particular case is one English speakers usually get right by instinct.
Change two: sentence adverbs move in front of the verb
The sentence adverbs are the small words that modify a whole clause rather than a single word. The core set you must know:
| Adverb | Meaning |
|---|---|
| ikke | not |
| aldrig | never |
| altid | always |
| tit / ofte | often |
| måske | maybe |
| gerne | gladly / willingly |
| jo | (you know, as we both know) |
| nok | probably / I suppose |
| vist | apparently |
In a main clause these come after the finite verb. In a subordinate clause they come before it. Watch the whole family flip:
Han kommer nok for sent.
He'll probably be late. (main: nok after the verb)
Det ærgrer mig, at han nok kommer for sent.
It annoys me that he'll probably be late. (subordinate: nok before the verb)
Vi spiser altid sammen om søndagen.
We always eat together on Sundays. (main)
Det er hyggeligt, at vi altid spiser sammen om søndagen.
It's nice that we always eat together on Sundays. (subordinate)
The rule is the same for every adverb in the table because they all occupy the same structural slot. You learn the placement once and you have it for all of them.
What counts as a subordinate clause: the triggers
A subordinate clause is one introduced by a subordinator. If you can spot the trigger word, you can predict the word order. The common triggers fall into a few groups:
- The complementiser at ("that"): ...at jeg ikke kan komme.
- Causal and conditional conjunctions: fordi (because), da (since/when, past), hvis (if), selvom (even though), eftersom (since).
- Temporal conjunctions: når (when, general/future), da (when, single past event), mens (while), før/inden (before), efter at (after).
- Relative pronouns som and der (who/which/that), which open relative clauses — these get their own page, syntax/relative-clauses.
- Embedded question words: hvor (where), hvornår (when), hvem (who), hvad (what), and so on, when they introduce an indirect question.
Jeg bliver hjemme, hvis det ikke holder op med at regne.
I'm staying home if it doesn't stop raining.
Hun gik tidligt, fordi hun aldrig kan lide store fester.
She left early because she never likes big parties.
Selvom han ikke siger meget, forstår han alt.
Even though he doesn't say much, he understands everything.
In every one of these, the adverb (ikke, aldrig) sits in front of the finite verb. Get into the habit of treating the trigger word as a signal flare: the moment you write at, fordi, hvis, da, når, mens, selvom, som or der, the next sentence adverb belongs before the verb.
Four minimal pairs to burn in
Set the main clause beside its embedded version and watch only the ikke:
Det regner ikke i dag. → Jeg håber, at det ikke regner i dag.
It isn't raining today. → I hope it isn't raining today.
Hun ringer aldrig først. → Det irriterer mig, at hun aldrig ringer først.
She never calls first. → It irritates me that she never calls first.
Vi har ikke tid. → Undskyld, men vi har desværre ikke tid. → ...fordi vi ikke har tid.
We don't have time. → ...because we don't have time.
Du kan ikke lide kaffe. → Jeg vidste ikke, at du ikke kan lide kaffe.
You don't like coffee. → I didn't know you don't like coffee.
The pattern is mechanical once you see it: main = verb then ikke; subordinate = ikke then verb.
Why Danish does this
There is a clean reason underneath the rule, and knowing it lets you stop memorising and start predicting. Danish clauses are built on a skeleton with fixed slots. One of those slots — the nexus field, in the traditional analysis — is where the sentence adverb lives, and it sits in front of the verb's "home" position. In a subordinate clause, the verb stays in its home position, so the adverb slot ends up in front of it: subject – [adverb] – verb. In a main clause, Danish yanks the finite verb forward into second position (that's V2), leaving the adverb slot stranded behind it: subject – verb – [adverb]. The adverb never actually moves. The verb moves in main clauses and stays put in subordinate ones, and that single difference is why the two clause types look mirror-imaged.
This is also why the ikke-position is such a reliable diagnostic. You can tell a Danish clause's type just by finding ikke: if it's after the verb, you're in a main clause; if it's before, you're in a subordinate one. Older grammars sometimes teach a checklist mnemonic (in Danish schools, the order of the central elements is drilled as a fixed sequence), but the practical takeaway is simpler than any acronym: in a subordinate clause, ikke comes first.
A note on the comma
Danish, unlike English, normally puts a comma in front of a subordinate clause, including at-clauses: Hun ved, at jeg kommer. (Modern Danish allows an optional "comma-light" style that omits some of these, but the traditional grammatical comma before a subordinator is standard and never wrong.) The comma is a useful visual cue: when you see it landing before at, fordi, hvis and the rest, it's reminding you that subordinate word order is about to start.
Common Mistakes
❌ Hun siger, at hun spiser ikke fisk.
Incorrect — in a subordinate clause ikke must come before the verb.
✅ Hun siger, at hun ikke spiser fisk.
She says that she doesn't eat fish.
This is the headline error, driven straight from English, which keeps not after the verb in every clause. The subordinator at triggers subordinate order, so ikke slides in front of spiser.
❌ Jeg går nu, fordi jeg kan ikke koncentrere mig.
Incorrect — fordi is a subordinator; ikke goes before kan.
✅ Jeg går nu, fordi jeg ikke kan koncentrere mig.
I'm leaving now because I can't concentrate.
With a modal verb the adverb still lands in front of the finite verb (here kan), not in front of the main verb. English "because I can't concentrate" keeps not after can, which is exactly the trap.
❌ Jeg ved ikke, hvor bor han.
Incorrect — an embedded question doesn't invert; keep subject before verb.
✅ Jeg ved ikke, hvor han bor.
I don't know where he lives.
Learners who have just drilled direct questions (hvor bor han?) over-apply the inversion. Embedded questions are subordinate clauses, so the subject comes first.
❌ Det er godt, at du kommer altid til tiden.
Incorrect — altid is a sentence adverb and must precede the verb in a subordinate clause.
✅ Det er godt, at du altid kommer til tiden.
It's good that you always come on time.
The flip is not just for ikke — it governs altid, aldrig, måske, gerne and the rest equally. Same slot, same move.
❌ Hvis du kommer ikke, bliver jeg skuffet.
Incorrect — after the subordinator hvis, ikke goes before kommer.
✅ Hvis du ikke kommer, bliver jeg skuffet.
If you don't come, I'll be disappointed.
Note the second half: the main clause bliver jeg correctly inverts, because the whole hvis-clause is the fronted element. Two different word orders in one sentence — uninverted inside the subordinate clause, V2 in the main one.
Key Takeaways
- A subordinate clause uses a different template: no V2 inversion (subject stays before the verb) and sentence adverbs before the finite verb.
- The trigger words to watch are at, fordi, hvis, da, når, mens, selvom, som, der and embedded question words.
- The deep reason: the verb moves forward in main clauses (V2) and stays home in subordinate clauses — the adverb slot is fixed; the verb is what shifts.
- The position of ikke is your diagnostic: after the verb = main clause; before the verb = subordinate clause.
- English never changes word order between clause types, which is why this is the second-hardest Danish syntax point after V2 — drill the ikke-flip until it's automatic.
Now practice Danish
Reading grammar gets you part of the way. The exercises are where it sticks — free, no signup needed.
Start learning Danish→Related Topics
- Placing Ikke and Sentence AdverbsA2 — Where ikke and adverbs like aldrig, altid, and gerne go — after the verb in main clauses, before it in subordinate clauses.
- The V2 Rule: Verb SecondA1 — The core rule of Danish main clauses: the finite verb stands in second position, with exactly one constituent before it — and the subject inverts when anything else is fronted.
- Conjunctions: An OverviewA1 — Danish conjunctions split into coordinating (join equals, no word-order change) and subordinating (introduce subordinate clauses with subordinate word order) — and the split is worth learning for its grammar, not its meaning.
- Relative ClausesB1 — How Danish relative clauses work: der for subjects, som for subjects or objects (droppable as object), preposition stranding as the everyday norm, and restrictive vs non-restrictive commas.
- Ikke: Placement and ScopeA1 — Where 'not' goes in Danish — after the finite verb in main clauses but before it in subordinate clauses — plus its scope, object shift, and how it negates single constituents.
- Inversion After a Fronted ElementA1 — Whenever a non-subject opens a Danish main clause — an adverb, object, prepositional phrase, or subordinate clause — the verb stays second and the subject moves behind it.