Linking verbs are the unsung heroes of sentence structure, forming a crucial bridge between a subject and a word or phrase that describes or identifies it. Unlike action verbs, which depict a physical or mental activity, linking verbs express a state of being, a condition, or a connection. They don’t show what the subject does, but rather what the subject is or becomes. Understanding linking verbs is fundamental to mastering grammar and constructing clear, coherent sentences.
The Core Function of Linking Verbs
At their most basic, linking verbs connect the subject of a sentence to a subject complement. This subject complement can take two primary forms:
Predicate Nominatives
A predicate nominative is a noun or pronoun that renames or identifies the subject. It follows the linking verb and essentially acts as an equivalent to the subject.
- Definition: A noun or pronoun that follows a linking verb and renames or identifies the subject.
- How to Identify: If you can replace the linking verb with a form of “to be” (is, am, are, was, were) and the sentence still makes sense, the noun or pronoun following it is likely a predicate nominative.
- Examples:
- “Sarah is a doctor.” (Doctor renames Sarah.)
- “The winner was Maria.” (Maria renames the winner.)
- “They are students.” (Students renames they.)
- “He became the manager.” (The manager renames he.)
- “That book is mine.” (Mine identifies the book.)
Predicate Adjectives
A predicate adjective is an adjective that follows a linking verb and describes or modifies the subject. It provides more information about the subject’s qualities, characteristics, or state.
- Definition: An adjective that follows a linking verb and describes the subject.
- How to Identify: Similar to predicate nominatives, if you can substitute the linking verb with “to be” and the adjective still makes sense describing the subject, it’s a predicate adjective.
- Examples:
- “The sky is blue.” (Blue describes the sky.)
- “The soup smells delicious.” (Delicious describes the soup.)
- “She seems tired.” (Tired describes she.)
- “The music sounded loud.” (Loud describes the music.)
- “He felt nervous before the presentation.” (Nervous describes he.)
Common Linking Verbs
While “to be” (am, is, are, was, were, be, being, been) is the most prevalent linking verb, several other verbs frequently function as linking verbs, particularly those indicating the senses or a change in state.
Forms of “To Be”
These are the most fundamental and frequently used linking verbs.
- Examples:
- “I am happy.” (Am links “I” to the adjective “happy.”)
- “You are smart.” (Are links “you” to the adjective “smart.”)
- “He is an engineer.” (Is links “he” to the noun “engineer.”)
- “They were late.” (Were links “they” to the adjective “late.”)
- “She has been a teacher for years.” (Has been links “she” to the noun phrase “a teacher.”)
Sensory Verbs
Verbs related to the five senses often act as linking verbs when they describe the subject’s perception or impression.
- See, Hear, Smell, Taste, Feel
- Examples:
- “The flower smells sweet.” (Smells links the flower to the adjective “sweet.”)
- “The bread tastes buttery.” (Tastes links the bread to the adjective “buttery.”)
- “The fabric feels soft.” (Feels links the fabric to the adjective “soft.”)
- “The music sounded melancholy.” (Sounded links the music to the adjective “melancholy.”)
- “The distant siren sounded faint.” (Sounded links the siren to the adjective “faint.”)
Verbs of State or Change
These verbs indicate a condition, a state of being, or a transformation.
- Appear, Become, Grow, Remain, Seem, Stay, Turn
- Examples:
- “The child appears healthy.” (Appears links the child to the adjective “healthy.”)
- “He became a doctor.” (Became links “he” to the noun phrase “a doctor.”)
- “The leaves grow green in spring.” (Grow links “leaves” to the adjective “green.”)
- “She remained calm during the crisis.” (Remained links “she” to the adjective “calm.”)
- “The situation seems complicated.” (Seems links “situation” to the adjective “complicated.”)
- “He will stay loyal.” (Stay links “he” to the adjective “loyal.”)
- “The milk turned sour.” (Turned links “milk” to the adjective “sour.”)
Distinguishing Linking Verbs from Action Verbs
The key difference lies in what the verb is doing. Action verbs show action; linking verbs show a connection or state of being. A helpful test is to substitute the verb with a form of “to be.”
The “To Be” Substitution Test
If you can replace the verb in question with “is,” “am,” “are,” “was,” or “were,” and the sentence still makes grammatical sense and conveys a similar meaning, it’s likely a linking verb. If the substitution results in an illogical or nonsensical sentence, the verb is probably an action verb.
- Example 1: “She sings beautifully.”
- Substitute: “She is beautifully.” (This doesn’t make sense. “Sings” is an action verb.)
- Example 2: “She sings a lovely song.”
- This sentence uses “sings” as an action verb with a direct object (“a lovely song”).
- Example 3: “Her voice sounds beautiful.”
- Substitute: “Her voice is beautiful.” (This makes sense. “Sounds” is a linking verb here, connecting “voice” to the adjective “beautiful.”)
- Example 4: “He ran quickly.”
- Substitute: “He is quickly.” (This doesn’t make sense. “Ran” is an action verb.)
- Example 5: “He ran the marathon.”
- This sentence uses “ran” as an action verb with a direct object (“the marathon”).
Context is Key
It’s important to note that some verbs can function as either linking verbs or action verbs depending on their usage in a sentence.
- Feel:
- Linking: “I feel happy.” (Describes your state of being.)
- Action: “I feel the rough texture of the cloth.” (Describes the action of touching.)
- Grow:
- Linking: “The plant grows taller.” (Describes a change in state.)
- Action: “She grows vegetables in her garden.” (Describes the action of cultivating.)
- Smell:
- Linking: “The food smells delicious.” (Describes the quality of the food.)
- Action: “The dog smells the mail carrier.” (Describes the action of sniffing.)
The Importance of Linking Verbs in Sentence Structure
Linking verbs are not just grammatical curiosities; they are essential for clarity and meaning.
Creating Descriptive Sentences
Linking verbs, paired with predicate nominatives and predicate adjectives, allow writers to paint vivid pictures and provide detailed descriptions. They move beyond simple statements of action to explore the nature, identity, and characteristics of subjects.
- Without linking verbs: “The dog barked.” (Simple action.)
- With linking verbs: “The dog is large and energetic.” (Describes the dog’s attributes.) “The dog seemed friendly.” (Describes its apparent disposition.)
Establishing Relationships and Identity
Linking verbs are crucial for defining relationships and establishing identity.
- “John is my brother.” (Establishes a familial relationship.)
- “This building was the original library.” (Identifies its past function.)
- “The concept remains controversial.” (Describes its ongoing status.)
Enhancing Fluency and Flow
Proper use of linking verbs contributes to the natural flow and rhythm of language. They provide pauses and connections that guide the reader through complex ideas.
Avoiding Grammatical Errors
Misidentifying linking verbs can lead to grammatical errors, particularly with pronoun case. For instance, after a linking verb, you should use a subject pronoun if it renames the subject.
- Correct: “It is I.” (I renames “it,” acting as a predicate nominative.)
- Incorrect: “It is me.” (While common in informal speech, grammatically, “me” is an object pronoun.)
- Correct: “The winners are she and he.” (She and he rename “winners.”)
- Incorrect: “The winners are her and him.”
Conclusion
Linking verbs are the connective tissue of our language. They don’t perform actions but rather establish states of being, conditions, and identifications. By understanding the common linking verbs, recognizing their function as connectors to predicate nominatives and predicate adjectives, and learning to distinguish them from action verbs through the “to be” substitution test, writers can significantly enhance the clarity, descriptiveness, and grammatical accuracy of their prose. Mastering linking verbs is a vital step in becoming a more proficient communicator.