Rennet is an extract made from the lining of a calf's fourth stomch.
In the sentence above, what is the verb and is it linking or action?
I thought it would be an action verb-is made.But I am not sure.
The verb in the main clause is IS.
Rennnet IS an extract. It's a linking verb -- because rennet and extract are the same thing.
MADE is a participle. The participial phrase made from the lining of a calf's fourth stomach describes extract.
In the sentence, the verb "is" is a linking verb. It connects the subject "rennet" to the predicate "an extract." This means that "rennet" and "extract" are referring to the same thing, and the verb "is" simply states that fact.
The word "made" is not the main verb in the sentence. It is a participle that is part of a participial phrase modifying the noun "extract." The phrase "made from the lining of a calf's fourth stomach" provides additional information about the kind or origin of the extract.
To identify the verb and its type in a sentence, it can be helpful to identify the subject and predicate first. The subject is the noun or pronoun the sentence is about, and the predicate is the part of the sentence that contains the verb and provides information about the subject.