Linking verbs serve as the grammatical bridge between a subject and the word or phrase that describes or identifies it. Unlike action verbs, these elements do not depict physical or mental activity; instead, they perform the subtle work of equating, clarifying, or modifying the subject. Understanding this distinction is fundamental for anyone seeking to master sentence structure, as it dictates how different components of a sentence relate to one another.
The Core Definition and Function
At its essence, a linking verb connects the subject of a sentence to a subject complement. This complement provides additional information, which can take the form of a noun, pronoun, or adjective. The primary role of these verbs is to establish a state of being rather than to express action, thereby shifting the focus from what the subject is doing to what the subject is or becomes. This structural role is invisible to the naked eye but essential for the sentence to convey a complete thought.
Common Examples and The "Be" Verb Family
The most recognizable members of this category are the various forms of the verb "to be." These include am , is , are , was , were , being , and been . These words are so frequently used that they often slip into writing and speaking without conscious consideration, yet they are the most straightforward examples of equating elements. For instance, in the sentence "The sky is blue," the verb "is" links the subject "sky" to the adjective "blue," describing a state of existence.
Other Verbs That Serve This Purpose
Beyond the "be" verbs, the English language utilizes several other verbs that function purely as links. These often relate to the senses or to verbs of remaining. Common examples include appear , become , feel , look , remain , seem , smell , and sound . Consider the sentence "She seems tired"; here, "seems" connects the subject "She" to the adjective "tired," conveying an impression rather than an action.
Identification: The Substitution Test
A practical method for distinguishing these verbs from action verbs is the substitution test. Because linking verbs connect to adjectives or nouns, one can often replace the verb phrase with a version of "to be" (is, are, was) without changing the grammatical validity of the sentence. If the sentence remains coherent, the original verb is likely a link. For example, the sentence "The soup tastes delicious" can be transformed into "The soup is delicious," confirming that "tastes" is acting as a linker rather than an action.
The Role of Subject Complements
The element that follows a linking verb is known as the subject complement, and it is crucial to understand that a sentence cannot contain a direct object in the traditional sense. The complement either renames the subject (predicate nominative) or describes it (predicate adjective). In the sentence "He became president," the noun "president" is a predicate nominative renaming "He." In the sentence "The flowers look vibrant," the adjective "vibrant" is a predicate adjective modifying "flowers."
