A long Greek sentence is not a row of words held together by commas. It is a small structure: one clause provides the main assertion, while other clauses complete a predicate, modify a noun, or place an event in time, cause, purpose, or condition. Fluent writing comes from seeing those relationships before choosing a linker.
This page brings the system together. The individual inventories belong to the pages on subordinate clauses, relative clauses, and να versus ότι/πως. Here the goal is to make several already-known patterns work inside one sentence.
Build outward from the main clause
Start with the clause that carries the point you want the reader to remember. Then ask what each additional clause contributes. A complement fills the content slot of a verb; an adverbial frames an event; a relative attaches to a noun.
Νομίζω ότι η Δανάη θέλει να αλλάξει δουλειά.
nomízo óti i Dhanái théli na aláksi dhuliá
I think that Danae wants to change jobs.
The main assertion is νομίζω. Its content is the ότι-clause, and θέλει inside that clause selects its own να-clause. The sentence is nested, but every level has one clear attachment.
Όταν κλείσω τον υπολογιστή, θα σου τηλεφωνήσω για να κανονίσουμε το Σαββατοκύριακο.
ótan klíso ton ipoloyistí, tha su tilefoníso ya na kanonísume to Savatokíriako
When I shut down the computer, I'll call you so that we can make plans for the weekend.
Here the fronted time clause frames the main event θα σου τηλεφωνήσω, while the final purpose clause explains the intended outcome. The comma closes the initial frame; no comma is needed before the closely integrated purpose clause.
Coordinate equals; subordinate background or detail
Coordination with και, αλλά, ή places clauses on the same level. Subordination makes one idea serve another. Neither is inherently more sophisticated. The useful choice is informational: coordinate two equal developments, but subordinate a circumstance, explanation, identification, or aim.
Η Εύα συνέκρινε τις δύο προσφορές και έστειλε στη διευθύντρια εκείνη που θεώρησε πιο συμφέρουσα.
i Éva sinékrine tis dhío prosforés ke éstile sti dhiefthíndria ekíni pu theórise pio simférusa
Eva compared the two offers and sent the director the one she considered better value.
The two actions συνέκρινε and έστειλε advance the account equally, so και coordinates them. The relative που θεώρησε πιο συμφέρουσα identifies which offer she sent. Repeating η Εύα or starting a new sentence before the relative would make the passage heavier without making it clearer.
Ο τεχνικός που μας σύστησε η Άννα είπε ότι θα έρθει μόλις τελειώσει τη δουλειά του.
o technikós pu mas sístise i Ána ípe óti tha érthi mólis teliósi ti dhuliá tu
The technician Anna recommended to us said that he would come as soon as he finished his work.
This sentence has three dependency levels. The relative identifies ο τεχνικός; the ότι-clause supplies what he said; and the μόλις-clause locates his coming in time. Reading from the inside out prevents που from being mistaken for the subject of the wrong verb.
Mood and clitics are decided locally
A long sentence does not acquire one mood for all its verbs. Each clause makes its own choice. A reported proposition normally uses ότι/πως and indicative forms; a wanted, requested, or intended event commonly uses να. The distinction is semantic, not a mechanical consequence of sentence length.
Μου είπε ότι δεν μένει πια εκεί και μου ζήτησε να μην της στείλω τίποτα στη διεύθυνση αυτή.
mu ípe óti dhen méni pia ekí ke mu zítise na min tis stílo típota sti dhiéfthinsi aftí
She told me that she no longer lives there and asked me not to send her anything at that address.
The factual report has δεν μένει. The requested non-event has the paired pattern να μην της στείλω. The clitic της belongs to στείλω, so it remains inside that clause, between μην and the verb.
Ξέρω ότι θα σου το εξηγήσει όταν βρει λίγο χρόνο.
kséro óti tha su to eksiyísi ótan vri lígho chróno
I know that she will explain it to you when she finds a little time.
The two clitics stay with εξηγήσει in the fixed local sequence θα + σου + το + verb. They do not move toward the higher verb ξέρω. For the full placement system, see where clitics go.
English often places an object pronoun after its verb and may compress a dependent event into an infinitive. Greek instead keeps the dependent verb personally inflected and places weak objects before that verb: “I asked her to help me” becomes a structure with να + με + βοηθήσει. Translating one English word at a time therefore hides the clause boundary you need.
A worked transformation
Suppose a draft contains four short statements:
Η Άννα βρήκε ένα διαμέρισμα.
i Ána vríke éna dhiamérizma
Anna found an apartment.
Το διαμέρισμα είναι κοντά στη δουλειά της.
to dhiamérizma íne kondá sti dhuliá tis
The apartment is near her workplace.
Θα μετακομίσει μόλις υπογραφεί το συμβόλαιο.
tha metakomísi mólis ipoghrafí to simvóleo
She will move as soon as the contract is signed.
Μου ζήτησε να τη βοηθήσω.
mu zítise na ti voithíso
She asked me to help her.
All four are grammatical, but the repeated nouns and identical sentence rhythm conceal the relationships. Decide that the request is the main news, turn the apartment information into a relative aside, and make the signing the time frame:
Η Άννα, που βρήκε ένα διαμέρισμα κοντά στη δουλειά της, μου ζήτησε να τη βοηθήσω στη μετακόμιση μόλις υπογραφεί το συμβόλαιο.
i Ána, pu vríke éna dhiamérizma kondá sti dhuliá tis, mu zítise na ti voithíso sti metakómisi mólis ipoghrafí to simvóleo
Anna, who found an apartment near her workplace, asked me to help her with the move as soon as the contract is signed.
The commas show that the relative adds background information about an already identified Anna. The request remains the backbone, and passive μόλις υπογραφεί frames the future help after the contract is signed. This is the practical value of subordination: not merely making a sentence longer, but ranking information.
Control the reader's load
Greek permits deep embedding, but grammatical does not always mean readable. Keep closely related material together, avoid forcing a relative clause to reach across several intervening nouns, and start a new sentence when two ideas deserve equal emphasis. In formal writing (formal), a clear two-sentence sequence is better than a single sentence whose reader must backtrack.
Deep nesting is genuinely difficult to process; there is no punctuation trick that repairs an unclear attachment. When two possible nouns could serve as the head of a relative clause, rewrite or divide the sentence.
Varying structure also prevents choppiness. A paragraph may use one coordinated sentence for a sequence, one complex sentence for explanation, and one short sentence for emphasis. Fluency is controlled contrast, not maximum length.
Common Mistakes
1. Failing to inflect a formal relative pronoun for its noun and role.
❌ Η αίτηση τον οποίο συμπληρώσαμε χθες λείπει από τον φάκελο.
Incorrect—the feminine direct object requires την οποία.
✅ Η αίτηση την οποία συμπληρώσαμε χθες λείπει από τον φάκελο.
i étisi tin opía simblirósame chthes lípi apó ton fákelo
The application that we completed yesterday is missing from the file. (formal)
2. Using indicative negation inside a να-clause.
❌ Πρέπει να δεν αργήσουμε στη συνάντηση.
Incorrect—να-clauses use μη(ν), not δεν.
✅ Πρέπει να μην αργήσουμε στη συνάντηση.
prépi na min aryísume sti sinándisi
We must not be late for the meeting.
3. Losing agreement inside an embedded clause.
❌ Ξέρω ότι οι γείτονες συμφώνησε με την πρόταση.
Incorrect—the plural subject οι γείτονες requires συμφώνησαν.
✅ Ξέρω ότι οι γείτονες συμφώνησαν με την πρόταση.
kséro óti i yítones simfónisan me tin prótasi
I know that the neighbors agreed with the proposal.
Key Takeaways
- Choose a main clause, then attach complements to predicates, relatives to nouns, and adverbials to events.
- Coordinate equal developments; subordinate background, identification, explanation, and purpose.
- Decide mood, negation, and clitic placement inside each clause.
- Use complexity to rank information, not simply to avoid periods.
Related Topics
- Subordinate Clauses OverviewA2 — Recognize Greek complement, adverbial, and relative clauses by what they attach to and what job they perform in a larger sentence.
- Connecting Sentences and ClausesB1 — Turn correct but choppy Greek sentences into a coherent paragraph through selective connectors, controlled repetition, and accurate punctuation.
- να vs ότι/πως (that-Clauses)B1 — The core complementizer split — ότι and πως report something that IS the case, while να points at something wished-for, aimed-at, or merely possible — and how the same verb (λέω, ξέρω) can take either one with a change of meaning.
- Relative ClausesB1 — Understand how Greek relative clauses attach to a head noun, how commas change their scope, how far they may move, and which verb controls agreement.
- Where Clitics GoA2 — One rule covers almost every weak pronoun in Greek: it stands immediately in front of the finite verb with nothing allowed in between — Το βλέπω, Δεν σε ξέρω, Θα σου το πω, Να με πάρεις. Two contexts send it behind instead. Includes the full list of what stacks in front of the verb, why an adverb can never squeeze in, and why Greek keeps the clitic with its own verb instead of moving it up.