Most Esperanto clauses divide into a subject and a predicate. The subject is the unmarked participant that the finite verb is built around; the predicate says what that subject does, experiences, becomes, or is. The subject is often an agent, but that is only the easiest case—not the definition.
The basic division
In practical analysis, the finite verb is the core of the predicate. Its object and other closely connected complements belong to what is predicated of the subject.
La infanoj ludas en la korto.
The children are playing in the courtyard.
- Subject: la infanoj
- Predicate: ludas en la korto
- Predicate core: ludas
Nia teamo finis la projekton du tagojn frue.
Our team finished the project two days early.
Here nia teamo is the subject. The predicate reports the whole event finis la projekton du tagojn frue. Within it, la projekton is an object and du tagojn frue gives a time difference.
This division is conceptual, not a demand that the subject always come first. Neutral statements normally do put it first, but case marking and context allow another constituent to precede it.
How the subject is marked
An ordinary subject has no preposition and no accusative -n. A noun, pronoun, or suitable correlative can fill the role.
La nova volontulo jam alvenis.
The new volunteer has already arrived.
Ŝi atendos nin ĉe la enirejo.
She will wait for us at the entrance.
Kiu prenis mian ombrelon?
Who took my umbrella?
In the question, kiu is the subject and therefore has no -n. Compare the object question:
Kiun vi atendis ĉe la enirejo?
Whom were you waiting for at the entrance?
Here vi is the subject; kiun is the object and carries -n. Front position does not make a word the subject.
The subject is not always the doer
With an action verb such as skribi, the subject is usually an intentional agent. Other verbs assign very different meanings to their subjects.
| Subject role | Example | What the subject does |
|---|---|---|
| agent | Lea skribis la mesaĝon. | actively performs the action |
| experiencer | Lea aŭdis bruon. | experiences a perception |
| recipient | Lea ricevis mesaĝon. | receives something |
| undergoer | La glaso rompiĝis. | undergoes a change |
| stimulus | La muziko plaĉas al Lea. | causes a favorable response |
La muziko plaĉas al mi, sed la teksto ŝajnas tro longa.
I like the music, but the lyrics seem too long.
English makes I the subject of like. Esperanto plaĉi makes the pleasing thing the subject and marks the experiencer with al. This is why meaning and verb valency—not English translation—identify the roles.
La malnova branĉo rompiĝis sub la pezo de la neĝo.
The old branch broke under the weight of the snow.
La malnova branĉo performs no deliberate action, yet it is the unmarked subject of rompiĝis. “Subject” is a grammatical role, not a synonym for “agent.”
Subject–verb agreement does not exist
Esperanto finite verbs do not change for person or number. The same form follows every subject:
Mi laboras hejme, sed miaj gepatroj laboras en la urbocentro.
I work at home, but my parents work downtown.
La gasto venis frue; la gastoj venis poste.
The guest came early; the guests came later.
English uses work/works and come/comes. Esperanto keeps laboras and venis unchanged. Number belongs visibly on the noun phrase—gasto/gastoj—not on the verb. See No Person or Number Agreement for the full paradigm.
Adjectives inside the subject do agree with its noun:
La lacaj vojaĝantoj fine atingis la hotelon.
The tired travelers finally reached the hotel.
That noun-phrase agreement must not be confused with verb agreement.
Subjects larger than a noun phrase
An infinitive or an entire clause can function as what the sentence comments on.
Regule ekzerci estas utile.
Exercising regularly is useful.
The infinitive phrase regule ekzerci is the subject. Because the predicative description characterizes an action, Esperanto uses the adverbial form utile, not utila.
Ke la trajno malfruos, jam estas klare.
That the train will be late is already clear.
This order is grammatical but somewhat heavy. Neutral prose often uses anticipatory tio or places the clause later:
Jam estas klare, ke la trajno malfruos.
It is already clear that the train will be late.
The second structure is naturally treated as impersonal, with the ke-clause supplying the content of klare. Esperanto does not need an English-style dummy it.
Express the subject unless a construction licenses omission
Esperanto is generally not a pro-drop language. Because laboras does not reveal person, an ordinary statement needs mi, vi, ŝi, or another overt subject.
Mi revenos post la tagmanĝo kaj tiam mi telefonos al vi.
I will return after lunch and then I will call you.
In coordinated clauses, the second subject can be omitted when the same subject is structurally shared:
Mi revenos post la tagmanĝo kaj telefonos al vi.
I will return after lunch and call you.
This is coordination with one subject governing two predicates, not unrestricted pronoun dropping.
Commands normally omit the understood vi:
Atendu momenton kaj ne fermu la pordon.
Wait a moment and don't close the door.
An explicit vi adds contrast or emphasis: Vi atendu ĉi tie; mi serĉos helpon. In subordinate volitive clauses, the subject is normally expressed because it may not be the addressee: Mi petas, ke vi atendu.
Genuinely subjectless predicates
Some verbs license no subject, especially weather and environmental verbs.
Hieraŭ pluvis, sed hodiaŭ neĝas.
Yesterday it rained, but today it is snowing.
English supplies dummy it; Esperanto does not say ĝi pluvas. The clause is complete with the verb and its time expressions.
Descriptive esti can also be subjectless:
Estas varme en la kuirejo.
It is warm in the kitchen.
Because no noun is being described, the description is adverbial varme. Compare the ordinary subject–predicate clause:
La kuirejo estas varma.
The kitchen is warm.
These express similar situations from different perspectives. The first reports a general condition in a place; the second attributes a property to la kuirejo.
Subject position and information structure
The subject normally precedes the predicate, especially when it is already known. A new or heavy subject may follow the verb:
Ĉe la pordo atendis grupo da malsekaj ekskursantoj.
A group of wet hikers was waiting at the door.
The initial location sets the scene, and the previously unmentioned group arrives as new information. This verb-before-subject order is accepted and common in presentational contexts. It is not evidence that position never matters.
La ekskursantoj atendis ĉe la pordo.
The hikers were waiting at the door.
This S–predicate order is neutral when the hikers are the current topic. For beginners, it is the safer baseline; postposing the subject should serve presentation, end weight, or focus.
Predicate boundaries and clear attachment
Keep complements close enough to their predicate head that the listener can see what modifies what.
La administranto klarigis la novan regulon al la loĝantoj tre pacience.
The manager explained the new rule to the residents very patiently.
Tre pacience modifies klarigis, not la loĝantoj. Agreement often protects noun phrases, but an adverb or prepositional phrase can attach ambiguously if inserted without care. Neutral order—verb, object, recipient, manner—makes the predicate transparent.
Common Mistakes
1. Treating the first noun as automatically the subject
❌ En ‘La katon ĉasis la hundo’, la kato estas la ĉasanto.
Incorrect — katon has accusative -n and is the object.
✅ En ‘La katon ĉasis la hundo’, la hundo estas la ĉasanto.
In ‘The cat was chased by the dog,’ the dog is the chaser.
2. Dropping a subject as English sometimes does in notes
❌ Revenos morgaŭ kaj sendos la dosieron.
Incomplete as an ordinary statement — the verb endings do not reveal who will return or send.
✅ Mi revenos morgaŭ kaj sendos la dosieron.
I will return tomorrow and send the file.
3. Adding dummy ĝi to a weather verb
❌ Ekde tagiĝo ĝi neĝas.
Incorrect English transfer — neĝi is subjectless in its weather meaning.
✅ Ekde tagiĝo neĝas.
It has been snowing since dawn.
4. Copying English subject roles onto plaĉi
❌ Mi plaĉas la muzikon.
Incorrect for ‘I like the music’ — with <em>plaĉi</em>, the pleasing thing is the subject and the experiencer follows <em>al</em>.
✅ La muziko plaĉas al mi.
I like the music.
Key Takeaways
- The subject is the unmarked participant around which the finite verb is organized; it is not necessarily an agent.
- The predicate is built around the finite verb and says what the subject does, undergoes, has, or is.
- Esperanto verbs do not agree with the subject in person or number.
- Ordinary statements express their subject; shared coordination, commands, and genuinely impersonal verbs license specific omissions.
- Neutral subject-first order aids processing, while a postverbal subject normally has presentational or focal value.
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Start learning Esperanto →Related Topics
- Basic Clause StructureA2 — Build clear Esperanto clauses around a finite verb, with grammatical roles marked by endings and arranged in a neutral information order.
- Neutral SVO OrderA2 — Use subject–verb–object as Esperanto's unmarked order, and depart from it only when context gives the new order a clear discourse purpose.
- Expressing the SubjectB1 — Learn how Esperanto expresses subjects with noun phrases, pronouns, clauses, and controlled omission despite invariant verb forms.
- No Person or Number AgreementB1 — Learn why every Esperanto verb ending remains unchanged across subjects and where person and number are expressed instead.
- Impersonal VerbsB1 — Build subjectless Esperanto clauses for weather, ambient conditions, necessity, and topics without inserting English dummy it or there.