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In linguistics, a copula is a word that is used to link the subject of a sentence with a predicate (a subject complement or an adverbial). Though it might not itself express any action or condition, it serves to associate the subject with a predicate that could not stand by itself.A copula is sometimes (though not always) a verb or a verb-like part of speech. (in English primary education grammar courses it is often called a linking verb).
The term is generally used to refer to the main copular verb in the language: in the case of English, this is "to be". It can also be used to refer to all such verbs in the language: in that case, English copulas include, "to be", "to become", "to get" and "to seem".
1 The copula in English
1.1 Use
We can identify several sub-uses of the copula:
- Identity: "I only want to be myself." "When the area behind the dam fills, it will be a lake." "The Morning Star is the Evening Star." "Boys will be boys." "I yam what I yam" ( Popeye).
- Class membership. To belong to a set or class: "She could be married." "Dogs are canines." "Moscow is a large city."
- Predication (property and relation attribution): "It hurts to be blue." "Will that house be big enough?" "The hen is next to the cockerel." "I am confused." Such attributes may also relate to temporary conditions as well as inherent qualities: "I will be tired after running." "Will you be going to the play tomorrow?" (see below)
The copula "to be" also has some non-copular uses, including:
- As an auxiliary verb:
- To form the passive voice: "I was told you wanted to see me"
- To add continuous aspect to tenses: "It is raining"
- Meaning "to exist": "I want only to be, and that is enough." "God is" (a way some theists assert their theism). "There's no sense in making a scientific inquiry about what species the Loch Ness Monster is, without first establishing that the Loch Ness Monster indeed is."
Note that the auxiliary verb function derives from the copular function; and, depending on one's point of view, one can still interpret the verb as a copula and the following verbal form as being adjectival.
1.2 Conjugation
As in most Indo-European languages, the English copula is the most irregular verb, due to constant use. Most English verbs (traditionally known as "weak verbs") have just four separate forms, e.g. "start", "starts", "starting", started". A large minority of verbs (traditionally known as "strong verbs") have five separate forms, e.g. "begin", "begins", "beginning", "began", "begun". "To be" is a very special case in having eight forms: "be", "am", "is", "are", "being", "was", "were", "been". Traditionally, it had even more, including "art", and "wert".
2 The copula in other languages
Languages tend to use the copula in quite different ways.
In Indo-European languages, the words meaning "to be" (originating in stem *es) often sound similar to each other. Due to the high frequence of their use, their inflection retains a considerable degree of similarity in some cases. Thus, for example, the English form is is an apparent cognate of Russian jest', in spite the fact that the two belong to language groups that had split at least three thousand years ago and have had very little interaction since ( twentieth-century19th century 20th century 21st century more centuries) Decades: 1900s 1910s 1920s 1930s 1940s 1950s 1960s 1970s 1980s 1990s As a means of recording the passage of time, the 20th century was that century which lasted from 1901- 2000 in the sense of the Gre borrowings notwithstanding).
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