The sun shone.
I bought a book.
The box is small.
The verb may consist of one word—as in the examples given—or it may consist of a group of words, called a verb-group, containing sometimes as many as five words. This verb group consists of one, two, three, or four auxiliary verbs, followed by a form of the verb expressing the meaning or sense. The form of the sense-verb is an infinitive, a present participle, or a past participle.
The moon will rise.
The moon is rising.
The moon has risen.
He may light the lamp.
He is going to light the lamp.