Kendra is who is to the left of the linking verb is . The dictionary appears happier sprawled on the floor than flying through the air. The dictionary is what is to the left of the linking verb appears . Every verb in a sentence must have at least one subject. But that doesn't mean that a verb can have only one subject.
Some verbs are greedy as far as subjects are concerned.
A greedy verb can have two, three, four, or more subjects all to itself. When a verb has two or more subjects, you can say that the verb has a compound subject . At the local Dairy Queen, Jenny and Marsha screamed in terror at the sight of Martians putting pickle slices on banana splits. At the local Dairy Queen, Officer Jenkins , Mrs. Lowery , the Williams twins , Harold , Billy Jo , Jenny , and Marsha screamed in terror at the sight of Martians putting pickle slices on banana splits.