|Here is a simple instruction poster about what a subject and predicate is. The subject is who or what the sentence is about. The predicate tells something about the subject. Every sentence has a subject and a predicate. The predicate always contains a verb. Here are some examples of a subject and a predicate.
The cat purred loudly. The cat is the subject and the predicate is purred loudly. Who or what the sentence is about is the subject and what happened or what the subject is doing is the predicate in the sentence.