Copula (linguistics) in the context of "Shema"

A predicative expression (or just predicative) is part of a clause predicate, and is an expression that typically follows a copula or linking verb, e.g. be, seem, appear, or that appears as a second complement (object complement) of a certain type of verb, e.g. call, make, name, etc. The most frequently acknowledged types of predicative expressions are predicative adjectives (also predicate adjectives) and predicative nominals (also predicate nominals). The main trait of all predicative expressions is that they serve to express a property that is assigned to a "subject", whereby this subject is usually the clause subject, but at times it can be the clause object. A primary distinction is drawn between predicative (also predicate) and attributive expressions. Further, predicative expressions are typically not clause arguments, and they are also typically not clause adjuncts. There is hence a three-way distinction between predicative expressions, arguments, and adjuncts.

The terms predicative expression on the one hand, and subject complement and object complement on the other hand overlap in meaning to a large extent.

Verbs constitute one of the main parts of speech (word classes) in the English language. Like other types of words in the language, English verbs are not heavily inflected. Most combinations of tense, aspect, mood and voice are expressed periphrastically, using constructions with auxiliary verbs.

Generally, the only inflected forms of an English verb are a third person singular present tense form ending in -s, a past tense (also called preterite), a past participle (which may be the same as the past tense), and a form ending in -ing that serves as a present participle and gerund. Most verbs inflect in a simple regular fashion, although there are about 200 irregular verbs; the irregularity in nearly all cases concerns the past tense and past participle forms. The copula verb be has a larger number of different inflected forms, and is highly irregular.

In linguistics a lexical verb or main verb is a member of an open class of verbs that includes all verbs except auxiliary verbs. Lexical verbs typically express action, state, or other predicate meaning. In contrast, auxiliary verbs express grammatical meaning. The verb phrase of a sentence is generally headed by a lexical verb.

Lexical verbs are categorized into five categories: copular, intransitive, transitive, ditransitive, and ambitransitive.

In traditional grammar, a subject complement is a predicative expression that follows a copula (commonly known as a linking verb), which complements the subject of a clause by means of characterization that completes the meaning of the subject.

When a noun, noun phrase, or pronoun functions as a subject complement, it is called a predicative nominal. When an adjective or analogous phrase functions as subject complement, it is called a predicative adjective. In either case the predicative complement corresponds to the subject.

In traditional grammar and guide books, a linking verb is a verb that describes the subject by connecting it to a predicate adjective or predicate noun (collectively known as subject complements).

Linking verbs include copulas such as the English verb be and its various forms, as well as verbs of perception such as look, sound, or taste and some other verbs that describe the subject, such as seem, become, or remain. In addition to predicate adjectives and predicate nouns, English allows for predicate prepositional phrases as well: John is behind the cocktail cabinet.