Syntax

Understand the core concepts of subject and predicate in Irish copula sentences, including the standard word order and its common exceptions.

Copula Grammar Word Order Syntax Pronouns

Irish has two verbs for “to be”: the substantive verb tá, which describes states and locations, and the copula is, which is used for identification and classification. The copula is not a true verb and follows a unique sentence structure that is different from regular Irish verbs. Understanding the roles of the subject and predicate is key to using it correctly.

Predicate and Subject in Copula Sentences

The predicate (faisnéis) is the part of the sentence that makes a statement about the subject. In a sentence with a regular verb, like Léann sé (He reads), the verb léann is the predicate.

However, in copula sentences, the verb is simply links the subject to its predicate. The predicate is usually a noun or an adjective that identifies or classifies the subject.

  • Predicate Noun: In “He is a student”, the phrase “a student” is the predicate. It classifies the subject (“he”).
  • Predicate Adjective: In “He is tall”, the word “tall” is the predicate. It describes a property of the subject.

In Irish, the standard word order is PSO (Predicate - Subject - Object). For copula sentences, this means the structure is Copula - Predicate - Subject. The predicate comes first, immediately after the copula is.

  • Is múinteoir é. - He is a teacher. (Copula: Is, Predicate: múinteoir, Subject: é)

This is the reverse of the typical English SVO (Subject - Verb - Object) order.

Exceptions to the Standard Word Order

While the Copula - Predicate - Subject structure is the basic rule, the word order can change in several common situations, particularly with pronouns and proper nouns.

First and Second Person Pronouns

The first and second person pronouns (mé, tú, sinn, muid, sibh) always appear immediately after the copula, regardless of whether they are the subject or the predicate.

When these pronouns are the subject, they follow the copula directly. This breaks the standard Predicate - Subject order.

  • Is mé an fear. - I am the man. (Here, mé is the subject, but it comes before the predicate an fear.)

To make the statement sound more natural, the pronoun is usually made the predicate of the sentence. This is done by using the emphatic form of the pronoun, which restores the standard Predicate - Subject word order.

  • Is mise an fear. - I am the man. (Literally: The man is me.) (Here, mise is the predicate, and an fear is the subject.)

Proper Nouns and Demonstratives as Subject

When the subject of a copula sentence is a proper noun (like Pól), a noun with a demonstrative (an fear sin), or a demonstrative pronoun (é sin), it usually comes after the predicate. However, it is separated from the copula by a third-person pronoun (é, í, iad) that acts as a placeholder or secondary predicate.

This maintains the formal Copula - Predicate - Subject structure, where the placeholder pronoun allows the true subject to appear later in the sentence.

  • Is é Pól an múinteoir. - Paul is the teacher. (Subject: Pól, Predicate: an múinteoir)

  • Is é an fear sin an dalta. - That man is the student. (Subject: an fear sin, Predicate: an dalta)

  • Is é sin an dalta. - That one is the student. (Subject: é sin, Predicate: an dalta)

  • Is iad seo na múinteoirí. - These are the teachers. (Subject: seo, Predicate: na múinteoirí)

Short Forms with Demonstratives

In everyday speech, sentences with demonstrative pronouns are often shortened. The copula is merges with the demonstrative (seo, sin, siúd), which then starts the sentence.

  • Sin é an dalta. - That is the student.
  • Seo iad na múinteoirí. - These are the teachers.

Using Word Order for Emphasis

While unusual, it is possible to place the subject (like a proper noun) at the very end of the sentence to give strong emphasis to the predicate. This suggests the predicate is unique, famous, or particularly significant.

  • Is é an múinteoir Pól. - Paul is the (famous, unique) teacher.

Sentences with Two Nouns

In identification sentences, where one definite noun is equated with another (e.g., “The man is the student”), it can be difficult to tell which is the subject and which is the predicate.

Because of the PSO rule, the noun immediately following the copula (and its placeholder pronoun é/í/iad) is usually the predicate.

  • Is é an dalta an fear. - The man is the student. (Predicate: an dalta)

However, the context, such as the question being answered, determines the true meaning.

Cé hé an fear? - Is é an dalta an fear. (Who is the man? - The man is the student.) (Predicate: an dalta)

Cé hé an dalta? - Is é an fear an dalta. (Who is the student? - The student is the man.) (Predicate: an fear)

In speech, a slight pause before the final noun can indicate that it is the predicate.

In classification sentences with two indefinite nouns, swapping the subject and predicate is rarely possible.

  • Tír gan teanga, tír gan anam. - A country without a language is a country without a soul. (Predicate: tír gan anam)

Demonstrative Pronouns in Classification

Classification sentences (where the predicate is an indefinite noun) also have long and short forms when a demonstrative pronoun is the subject.

The long form follows the standard Copula - Predicate - Subject pattern.

  • Is amhrán é sin. - That is a song.
  • Is fear é seo. - This is a man.

The short form, common in speech, places the demonstrative at the beginning.

  • Sin amhrán. - That is a song.
  • Seo fear. - This is a man.
Grammatical analysis of subject and predicate

The analysis on this page follows the common approach in modern grammars, which generally equates the subject with the theme (known information) and the predicate with the rheme (new information). This approach requires accepting the word order “exceptions” described above.

An alternative theory, notably argued by grammarian Gerard O’Nolan, proposes that the word immediately following the copula is always the predicate, without exception. In this view, a subject can never directly follow the copula unless separated by a placeholder pronoun (é, í, iad). According to this stricter interpretation, a pronoun like mé in Is mé an fear would always be the predicate, regardless of whether it is emphatic. This would make the Predicate - Subject rule almost universal.

Ultimately, the theme-rheme relationship (what new information is being stated about what known information) is often more important for communication than the strict grammatical labels. The model presented here focuses on that communicative function.

Historical note on 'is mé'

The structure is mé may have developed from older, conjugated forms of the copula. In Old Irish, the first-person form was am (“I am”), used in classification sentences like Am fer (“I am a man”).

For identification sentences, however, the form is was used even in Old Irish, resulting in sentences like Is mé in fer. In this construction, is is an impersonal form meaning “it is”. The pronoun mé is technically the predicate (“it is I”), and in fer (“the man”) is an apposition, a noun phrase that further explains the predicate. The literal meaning was closer to “It is I, the man.” Over time, this structure became the standard way to say “I am the man.”