In these sentences belongs and is are the verbs. Belongs asserts or shows the relation between the dog and the man. Is shows the relation between the girl and happy. If we simply say girl and happy, we do not show any connection between them or make any statement relating the two, but when we say, The girl is happy, we are asserting something, and the word is makes the assertion.

Or when we say, The girl was happy, or The girl will be or may be happy, in each of these cases, it is the verb or verb phrase was or will be or may be, that asserts or shows the relation between the subject girl and the descriptive word happy. You will observe that the verbs will be and may be are composed of more than one word and are verb phrases.

We will study the verb in succeeding lessons, but let us remember from this lesson that the word or group of words that makes the assertion in the sentence is the verb. Remember too that every sentence must contain a verb.

Get this basic principle firmly fixed in mind that what a word does decides what it is—to what part of speech it belongs, and that every class of words fulfills its own function in sentence building.

32. Remember:—

Every sentence must have a subject and a predicate.

Every sentence must express a complete thought.

Every sentence must contain a verb.

A noun is the name of something.