Higher Education What are logical subject-predicate and verb-object relations?

The simplest way to say it: subject-predicate is that the subject and the predicate are in an active relationship with each other, that is to say, the action occurs actively by the subject, e.g., I opened the door (it was I who took the initiative to open the door, it was not the door that opened by itself), and vice versa, verb-object relationship is that the subject and predicate are in a passive relationship with each other, that is, the action of the predicate was forced to take place, e.g., He was killed, kill is the predicate, and he was killed by someone else, he didn't commit suicide, and he killed himself. So it is a verb-object relationship