Shifting Perspectives: The Ergative-Absolutive Alignment in Basque and Georgian

Ergativity-absolutivity is a system of grammatical alignment that differs fundamentally from the nominative-accusative pattern found in English and most European languages. Where nominative systems group the subject of an intransitive verb (S) with the agent of a transitive verb (A), ergative systems group the intransitive subject (S) with the patient of a transitive verb (P). This S/P group is marked by the Absolutive case, while the transitive agent (A) receives special marking with the Ergative case. This concept is vividly illustrated by Basque and Georgian, two unrelated languages. Basque is a consistently ergative language; the agent of any transitive action is marked with the ergative suffix *-k*, while the subject of an intransitive verb and the object of a transitive verb are both in the unmarked Absolutive case. This pattern holds true regardless of tense or aspect. Georgian, in contrast, exhibits 'split ergativity,' where the alignment system changes based on the verb's tense-aspect series. It uses a nominative-accusative pattern in the present tense but shifts to an ergative-absolutive pattern in the aorist (past) tense. This split demonstrates that ergativity can be a dynamic feature tied to specific grammatical contexts, making Georgian a crucial case study for understanding the functional motivations behind different alignment systems.

1. Introduction: Deconstructing the Sentence

In the study of language, one of the most fundamental questions is how we encode the roles of participants in an event. Who is doing what, and to whom? Languages use grammatical systems called alignment to mark the relationship between verbs and their arguments. To understand these systems, we must first define three core syntactic roles:

• S (Sole Argument): The single participant in an intransitive clause (a clause with only one core participant). Example: The boy sleeps.
• A (Agent): The more agent-like participant in a transitive clause (a clause with two core participants, typically an actor and an undergoer). Example: The boy kicked the ball.
• P (Patient): The more patient-like participant in a transitive clause. Example: The boy kicked the ball.

Most European languages, including English, use a Nominative-Accusative alignment. In this system, the S and A roles are treated identically, marked with the Nominative case. The P role is treated differently, marked with the Accusative case.

• She (S) arrived.
• She (A) saw him (P).

Notice how the pronoun for S and A is the same ('She'), while the pronoun for P is different ('him'). This S/A grouping is the hallmark of a nominative-accusative system. However, this is not the only way languages can structure their grammar. This is where ergativity comes in.

2. The Ergative-Absolutive System: A Different Grouping

An Ergative-Absolutive system flips this grouping on its head. It treats the S and P roles identically, marking them with the Absolutive case. The A role is treated differently, marked with the Ergative case.

• S and P are grouped together (Absolutive case).
• A is marked separately (Ergative case).

This can be conceptually challenging for speakers of nominative-accusative languages because it means the 'subject' of an intransitive verb (like 'The boy' in 'The boy sleeps') is grammatically treated the same as the 'object' of a transitive verb (like 'the ball' in 'The girl kicked the ball'). The actor of the transitive verb is the one that gets special marking. Let's explore how this plays out in two classic ergative languages: Basque and Georgian.

3. Basque: A Purely Ergative System

Basque (Euskara), a language isolate spoken in parts of Spain and France, is a textbook example of a morphologically ergative language. Its case marking system consistently follows the ergative-absolutive pattern across all tenses and aspects.

The Absolutive case in Basque is unmarked (the -a is a definite article), while the Ergative case is marked with the suffix -k.

Intransitive Clause (S role):

• Mutila etorri da.
• Mutil-a / etorri da
• Boy-the(ABS) / arrived has
• 'The boy has arrived.'

Here, Mutila ('The boy') is the sole argument (S) and is in the unmarked Absolutive case.

Transitive Clause (A and P roles):

• Mutilak liburua irakurri du.
• Mutil-a-k / liburu-a / irakurri du
• Boy-the-ERG / book-the(ABS) / read has
• 'The boy has read the book.'

In this transitive sentence, the agent Mutilak ('The boy') is marked with the ergative suffix -k. The patient liburua ('the book') is in the Absolutive case, the same as the S argument in the intransitive example. This S=P grouping is the essence of ergativity. The verb agreement in Basque is also famously complex, often agreeing with the A, P, and even the indirect object (dative) participant simultaneously, a feature known as polypersonal agreement.

4. Georgian: The Complexity of Split Ergativity

Georgian (Kartuli), a Kartvelian language, presents a more complex and fascinating picture. It is a split-ergative language, meaning its alignment system changes depending on the tense/aspect/mood of the verb. This verbal complex is known as a screeve. Georgian showcases three different alignment patterns across its three main screeve series.

Series I (Present/Future Tenses) -> Nominative-Accusative Alignment: In the present tense, Georgian behaves like a nominative-accusative language. The A argument is in the Nominative case (-i), and the P argument is in the Dative case (-s).

• K'ats-i ts'eril-s ts'ers.
• Man-NOM / letter-DAT / writes
• 'The man writes the letter.'

Series II (Aorist/Past Tense) -> Ergative-Absolutive Alignment: This is where ergativity appears. In the aorist (simple past) screeve, the alignment shifts. The A argument takes the Ergative case (-ma), and the P argument takes the Nominative case, which now functions as the Absolutive.

• K'ats-ma ts'eril-i dats'era.
• Man-ERG / letter-NOM(ABS) / wrote
• 'The man wrote the letter.'

Compare this to an intransitive sentence in the same tense:

• K'ats-i mok'vda.
• Man-NOM(ABS) / died
• 'The man died.'

The S argument (K'ats-i) and the P argument (ts'eril-i) share the same case (Nominative, functioning as Absolutive), while the A argument (K'ats-ma) is marked differently (Ergative). This is a classic ergative-absolutive pattern, but it's restricted to this tense series.

Series III (Perfect/Evidential) -> Dative Alignment: To add another layer of complexity, the perfect screeves (e.g., 'has written') use a third pattern. The logical subject (A) is put in the Dative case, and the logical object (P) is in the Nominative. The verb agrees with the P argument as if it were the subject.

• K'ats-s ts'eril-i dauts'eria.
• Man-DAT / letter-NOM / has (apparently) written
• 'The man has written the letter.'

This is often called an 'inverted' construction, where the experience or state of the logical subject is emphasized. The split system in Georgian demonstrates that ergativity is not an all-or-nothing feature of a language but can be a dynamic part of its grammatical system, tied to specific semantic or pragmatic functions like aspect and evidentiality.

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