Questions: Linking Verbs and Subject Complements

Question 1

Which sentence has the verb correctly agreeing with its subject?

• A. The biggest problem are the long delays in the approval process.
• B. The biggest problem is the long delays in the approval process.
• C. The long delays is the biggest problem in the approval process.
• D. The long delays are becoming the biggest problem, which are growing worse.

Answer: (B)

In a sentence with a linking verb, the verb agrees with the *subject*, not the predicate nominative (subject complement). The subject is 'The biggest problem' (singular), so the verb is 'is' even though 'delays' (plural) appears immediately before the verb. Option A represents the classic error: hearing the plural 'delays' and incorrectly shifting to 'are.' Option C makes the opposite error — using the predicate as the grammatical subject. Option D has a relative clause error ('which are' when 'which' refers to the singular 'problem').

Question 2

In the sentence 'She felt the velvet,' what grammatical role does 'the velvet' play?

• A. A predicate adjective — it describes a quality of 'she'
• B. A predicate nominative — it renames 'she'
• C. A direct object — 'felt' is used as an action verb here, and 'the velvet' is the thing being touched
• D. A subject complement — all uses of 'feel' create linking verb structures

Answer: (C)

This sentence uses 'felt' as an action verb — she is performing the act of touching. 'The velvet' is the thing being acted upon: a direct object. Compare to 'She felt tired,' where 'tired' describes her state — that is a predicate adjective and 'felt' is a linking verb. The test: can you substitute a form of 'be' without changing the basic meaning? 'She is the velvet' makes no sense; 'She is tired' works. Not all uses of sensory verbs are linking uses — only those where the following word describes or renames the subject.

Question 3

In a sentence with a linking verb, the verb should agree with whichever noun is closest to it — whether that noun is the subject or the predicate nominative.

• T. True
• F. False

Answer: False

The verb always agrees with the *subject*, regardless of what appears immediately before the verb. In 'The cause of the delays is poor planning,' 'cause' (singular) governs the verb even though 'delays' (plural) is closer to 'is.' Similarly, 'The biggest problem is the long delays' uses singular 'is' to agree with 'problem,' not plural 'delays.' The proximity rule is a temptation, not a grammar rule.

Question 4

The sentence 'The soup tastes salty' uses a linking verb because 'salty' describes a quality of the soup rather than something the soup is doing.

• T. True
• F. False

Answer: True

This is a linking verb construction. 'Tastes' connects the subject ('the soup') to the predicate adjective ('salty'), which describes the soup's quality. The substitution test confirms it: 'The soup is salty' preserves the basic meaning, which proves 'tastes' is functioning as a linking verb here. In this construction, 'salty' is a subject complement — it loops back to describe the subject.

Question 5

How can you tell whether a sensory verb like 'feel,' 'smell,' 'look,' or 'taste' is functioning as a linking verb or an action verb in a given sentence, and why does the distinction matter?

Model answer: Apply the substitution test: if you can replace the verb with a form of 'be' without changing the basic meaning, it is functioning as a linking verb and what follows is a subject complement. 'She felt tired' → 'She was tired' (yes — linking verb, 'tired' is a predicate adjective). 'She felt the fabric' → 'She was the fabric' (no — action verb, 'the fabric' is a direct object). The distinction matters because only linking verb constructions create subject complements, which follow different grammatical rules: complements are adjectives (not adverbs), predicate nominatives use nominative case, and verb agreement tracks the subject rather than the complement.

The substitution test is the practical diagnostic that generalizes across all verbs in the linking-verb family. Without it, students either over-apply linking structure to action sentences or miss linking structure in less obvious verbs like 'remain,' 'prove,' or 'grow' when used in stative senses.