Here's the breakdown of the differences:
Auxiliary Verb:
* Purpose: Helps another verb to form a verb phrase.
* Examples: *be* (am, is, are, was, were, being, been), *have* (has, have, had, having), *do* (does, do, did, doing)
* Functions: They indicate tense (past, present, future), voice (active, passive), mood (indicative, imperative, subjunctive), and emphasis.
* Examples in sentences:
* She *is* writing a letter. (helping verb "is" with the main verb "writing")
* They *have* finished their homework. (helping verb "have" with the main verb "finished")
* We *do* enjoy going to the beach. (helping verb "do" with the main verb "enjoy")
Linking Verb:
* Purpose: Connects the subject of a sentence to a predicate nominative or predicate adjective.
* Examples: *be* (am, is, are, was, were, being, been), *become*, *seem*, *appear*, *feel*, *look*, *smell*, *taste*, *sound*
* Functions: They don't show any action. They simply link the subject to a word or phrase that renames or describes the subject.
* Examples in sentences:
* He *is* a doctor. (linking verb "is" connects the subject "he" to the predicate nominative "doctor")
* The cake *tastes* delicious. (linking verb "tastes" connects the subject "cake" to the predicate adjective "delicious")
Key Difference:
* Auxiliary verbs help to create a verb phrase and contribute to the action of the sentence.
* Linking verbs act as connectors and don't express any action. They simply link the subject to another word or phrase that provides more information about the subject.
Let me know if you have any further questions!