"Felt" can function as either a linking verb or an action verb, depending on its context. When used as a linking verb, it connects the subject of the sentence with a subject complement that describes or renames it (e.g., "I felt tired"). When used as an action verb, it describes a physical or mental sensation experienced by the subject (e.g., "I felt the soft fabric").
"Felt" can function as both an action verb (e.g., "She felt the soft fabric") and a linking verb (e.g., "She felt happy"). To determine its role in a sentence, you can check if it is directly followed by an object (action verb) or a subject complement (linking verb).
"Felt" is usually considered an action verb when indicating a physical sensation or emotion. It can also be a linking verb when used to connect the subject to a state or condition ("She felt happy").
Became is a linking verb because there is no action
"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.
"Go" can function as both an action verb and a linking verb. As an action verb, it indicates physical movement. As a linking verb, it connects the subject to a subject complement that describes or renames the subject.
Linking or action verb
Felt is the past tense of feel, which can be used as an action verb or a linking verb. Action: She felt all the fabrics in the store. Linking: I felt sick yesterday.
"Felt" is usually considered an action verb when indicating a physical sensation or emotion. It can also be a linking verb when used to connect the subject to a state or condition ("She felt happy").
[Linking verb] Jane felt pain after the injection. [Action verb] Jane feels pain.
Powerful
There is no direct object in that sentence. Felt is being used as a linking verb, not an action verb. The verb must be an action to take a direct object.
Adverb
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.
Was is a linking verb.