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Agreement (linguistics)

Change in form of a word depending on related words

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Through Linguistics, Word and English grammar

For example, in Standard English, one may say I am or he is, but not "I is" or "he am". This is because English grammar requires that the verb and its subject agree in person. The pronouns I and he are first and third person respectively, as are the verb forms am and is. The verb form must be selected so that it has the same person as the subject in contrast to notional agreement, which is based on meaning.

By category

Agreement generally involves matching the value of some grammatical category between different constituents of a sentence (or sometimes between sentences, as in some cases where a pronoun is required to agree with its antecedent or referent). Some categories that commonly trigger grammatical agreement are noted below.

Person

Agreement based on grammatical person is found mostly between verb and subject. An example from English (I am vs. he is) has been given in the introduction to this article.

Agreement between pronoun (or corresponding possessive adjective) and antecedent also requires the selection of the correct person. For example, if the antecedent is the first person noun phrase Mary and I, then a first person pronoun (we/us/our) is required; however, most noun phrases (the dog, my cats, Jack and Jill, etc.) are third person, and are replaced by a third person pronoun (he/she/it/they etc.).

Number

Agreement based on grammatical number can occur between verb and subject, as in the case of grammatical person discussed above. In fact the two categories are often conflated within verb conjugation patterns: there are specific verb forms for first person singular, second person plural and so on. Some examples:

  • I really am (1st pers. singular) vs. We really are (1st pers. plural)
  • The boy sings (3rd pers. singular) vs. The boys sing (3rd pers. plural)

Again as with person, there is agreement in number between pronouns (or their corresponding possessives) and antecedents:

  • The girl did her job vs. The girls did their job

Agreement also occurs between nouns and their specifier and modifiers, in some situations. This is common in languages such as French and Spanish, where articles, determiners and adjectives (both attributive and predicative) agree in number with the nouns they qualify:

  • le grand homme ('the great man') vs. les grands hommes ('the great men')
  • el hombre alto ('the tall man') vs. los hombres altos ('the tall men')

In English this is not such a common feature, although there are certain determiners that occur specifically with singular or plural nouns only:

  • One big car vs. Two big cars
  • Much great work vs. Many great works

Gender

In languages in which grammatical gender plays a significant role, there is often agreement in gender between a noun and its modifiers. For example, in French:

  • le grand homme ('the big man'; homme is masculine) vs. la grande chaise ('the big chair'; chaise is feminine)

Such agreement is also found with predicate adjectives: l'homme est grand ('the man is big') vs. la chaise est grande ('the chair is big'). However, in some languages, such as German, this is not the case; only attributive modifiers show agreement:

  • der große Mann ('the big man', with inflection) vs. der Mann ist groß ('the man is big', without)

In the case of verbs, gender agreement is less common, although it may still occur, for example in Arabic verbs where the second and third persons take different inflections for masculine and feminine subjects. In the French compound past tense, the past participle – formally an adjective – agrees in certain circumstances with the subject or with an object (see passé composé for details). In Russian and most other Slavic languages, the form of the past tense agrees in gender with the subject, again due to derivation from an earlier adjectival construction.

There is also agreement in gender between pronouns and their antecedents. Examples of this can be found in English (although English pronouns principally follow natural gender rather than grammatical gender):

  • The man reached his destination vs. The ship reached her/its destination

For more detail see Gender in English.

Case

In languages that have a system of cases, there is often agreement by case between a noun and its modifiers. For example, in German:

  • der gute Mann ('the good man', nominative case) vs. des guten Mann(e)s ('of the good man', genitive case)

In fact, the modifiers of nouns in languages such as German and Latin agree with their nouns in number, gender and case; all three categories are conflated together in paradigms of declension.

Case agreement is not a significant feature of English (only personal pronouns and the pronoun who have any case marking). Agreement between such pronouns can sometimes be observed:

  • Who came first – he or his brother? vs. Whom did you see – him or his brother?

Alliterative

A rare type of agreement that phonologically copies parts of the head rather than agreeing with a grammatical category. For example, in Bainouk:

katama-ŋɔ

river-prox.

in-ka

this

/

/

katama-ā-ŋɔ

river-pl-prox.

in-ka-ā

these

In this example, what is copied is not a prefix, but rather the initial syllable of the head 'river'.

Phonological

Phonological agreement is a form of phonological assimilation in which segments (the smallest identifiable unit in a stream of speech) share one or more phonological features. Harmony is a class of phonological agreement, including consonant harmony, vowel harmony, and vowel–consonant harmony.

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