1. The boy walks. 2. The rain falls.In these sentences each of the verbs walks and falls, is of itself the complete prediction of the sentence.Verbs which may be used as predicates, without the aid of other words, are called verbs of complete predication.1. The boy is sick. 3. The dog seems cross.2. The man looks tired. 4. Hungry wolves are voracious.Here the verbs is, look, seems, and are, require the use of other words in order to form complete predicates.Verbs which thus require the help of other words to form predicates are called verbs of incomplete predication.