0 a type of verb, of which the most common is "be", that joins the subject of the verb with a complement:
Specifically, these three forms were deletion of the copula, deletion of the auxiliary, and subject - verb variation.
In essence, this decision results in a distinction between copula and auxiliary functions of is and are.
For the dependent variable of zero copula, there are three variants.
Figure 3 summarizes the distributions of the zero copula by following grammatical environment.
Especially the copula seems to ensure that the subject and the predicate are in a definite logical relationship.
They never attempt to invert main verbs (other than copula be).
At the same time, we did see development in language-specific inflectional morphology and syntax required for copulas and lexical main verbs.
The first finite forms usually are modals and the copula\auxiliary is, supplemented by a limited set of stative lexical verbs.
