linking
Sounds can be either an action (transitive) verb or a linking verb, depending on the context.
Transitive verb: The coach sounded his whistle. (He actively blew into it).
Linking verb: He sounds nice to me. (Here sounds links the subject He to the adjective nice. No action is expressed.)
The verb 'sound' is an action verb, a word for the act of making a sound. The word 'sound' is also a noun; used as a noun at the end of the previous sentence.
began is an action verb, not a linking verb.
"Entered" can function as both a action verb and a linking verb, depending on how it is used in a sentence. As an action verb, it indicates physical motion or movement. As a linking verb, it connects the subject to a subject complement that renames or describes it.
It is an action verb.
action, it is the past tense of the verb surround.
"Has" can function as both a linking verb and a helping verb. As a linking verb, it connects the subject to a subject complement that renames or describes it (e.g., "She has been a teacher for 10 years"). As a helping verb, it is used with a main verb to form a verb phrase (e.g., "She has eaten dinner").
"Is" is a linking verb. Linking verbs are used to connect the subject of a sentence to a noun or adjective that renames or describes the subject.
Was is a linking verb.
"Was" is a linking verb. It is used to connect the subject of a sentence to a subject complement that describes or renames the subject.
action and linking
Linking verb
It's a linking verb Action verb express a action of some kind. Linking verb express some state of being
it is a linking verb