Two-part conjunctions in German (B1)

what is it?

Two-part conjunctions (also called correlative conjunctions) are fixed pairs of words that work together to connect two elements — words, phrases, or clauses — in a single sentence. Unlike single conjunctions such as und or aber, each part of the pair occupies a specific position in the sentence and cannot be swapped or used alone. German has several such pairs, each expressing a distinct logical relationship: addition, negative addition, alternative, concession, or proportion.

when to use it

nicht nur … sondern auch — use this to add a second, often surprising or emphatic element to the first: «not only … but also».
sowohl … als auch — use this to state that both elements apply equally: «both … and». It is more formal than und.
weder … noch — use this to negate both elements simultaneously: «neither … nor». No additional nicht is needed.
entweder … oder — use this to present exactly two alternatives: «either … or».
zwar … aber — use this to acknowledge a fact and then introduce a contrasting point: «it is true … but / admittedly … but».
je … desto / umso — use this to express a proportional relationship between two comparatives: «the more … the more». The je-clause has verb-final word order; the desto-clause uses inversion (comparative + verb + subject).
und zwar — use this after a comma to specify or elaborate on what was just said: «namely / that is». It is not a symmetrical pair but a fixed adverbial connector.

formation

Most pairs connect two parallel elements without changing the main clause word order. The table below shows each pair, its position pattern, and the word order rule that applies.

pair	first element position	second element position	word order note
nicht nur … sondern auch	before first element	before second element	normal main-clause order in both halves
sowohl … als auch	before first element	before second element	normal main-clause order in both halves
weder … noch	before first element	before second element	negation is built in — no nicht needed
entweder … oder	before first element (or clause-initial)	before second element	normal main-clause order; entweder can trigger inversion if clause-initial
zwar … aber	zwar in the first clause	aber starts the second clause	aber is a coordinating conjunction — verb stays in position 2
je … desto/umso	je + comparative — verb moves to end (subordinate order)	desto/umso + comparative — then verb, then subject (inversion)	the je-clause is always subordinate; the desto-clause always inverts
und zwar	after a comma at the end of the main clause	und zwar introduces the specification	no verb needed after und zwar if a noun phrase follows

For je … desto: the comparative adjective or adverb comes directly after je and directly after desto. The finite verb of the je-clause goes to the very end. The finite verb of the desto-clause comes immediately after the comparative, before the subject: Je mehr ich lerne, desto besser verstehe ich ….

examples in context

Sie spricht nicht nur Spanisch, sondern auch Türkisch.

She speaks not only Spanish but also Turkish.

Both halves keep normal subject-verb order. The second clause omits the subject and verb because they are identical to the first.

Je mehr ich lerne, desto besser verstehe ich die Grammatik.

The more I study, the better I understand the grammar.

In the je-clause the verb (lerne) is last. In the desto-clause the comparative (besser) comes first, then the verb (verstehe), then the subject (ich).

Er isst weder Fleisch noch Fisch.

He eats neither meat nor fish.

The pair weder … noch carries the negation on its own. Adding nicht would double-negate the sentence.

Wir fahren entweder mit dem Zug oder mit dem Bus.

We are travelling either by train or by bus.

entweder … oder presents two mutually exclusive options.

Das Hotel ist zwar teuer, aber sehr schön.

The hotel is admittedly expensive, but very nice.

zwar concedes the first point; aber introduces the contrasting quality. Both halves are main clauses.

Ich komme morgen, und zwar um acht.

I am coming tomorrow, namely at eight.

und zwar follows a comma and pins down the vague word morgen with a precise time. No verb is needed after und zwar here.

Er spricht sowohl Deutsch als auch Englisch.

He speaks both German and English.

sowohl … als auch is interchangeable with nicht nur … sondern auch in many contexts but sounds more formal and balanced.

common pitfalls

Adding nicht to weder … noch. Because weder … noch already contains a built-in negation, adding nicht creates a double negative that cancels the intended meaning.
✗ Er isst nicht weder Fleisch noch Fisch.
✓ Er isst weder Fleisch noch Fisch.
Wrong word order after desto. After desto the order is: comparative → finite verb → subject. Placing the subject before the verb is the most common error.
✗ Je mehr ich lerne, desto ich verstehe besser die Grammatik.
✓ Je mehr ich lerne, desto besser verstehe ich die Grammatik.
Mixing the pairs. Each pair is fixed. sowohl must pair with als auch, not with oder. entweder must pair with oder, not with noch. Treat each pair as a single unit.
✗ Er spricht sowohl Deutsch oder Englisch.
✓ Er spricht sowohl Deutsch als auch Englisch.
✗ Wir fahren entweder mit dem Zug noch mit dem Bus.
✓ Wir fahren entweder mit dem Zug oder mit dem Bus.