Final answer:
In the sentence provided, the noun is 'children' and the verb is 'run.' The noun is the subject of the sentence, the entity performing the action, and the verb indicates the action taken by the subject. Ensuring correct subject-verb agreement is crucial in sentence construction.
Step-by-step explanation:
In the sentence 'Clever children run after school,' the noun is 'children,' which refers to the young human beings who are performing the action. The adjective 'clever' is describing the children. The verb in the sentence is 'run,' which indicates the action that the clever children are taking after school. It is important to note here that nouns are words that name people, places, things, or ideas, while verbs are words that describe an action, a state of being, or an occurrence.
Focusing on subject-verb agreement is essential in constructing sentences correctly. Failure to do so might result in grammatical errors, which can change the meaning of a sentence or simply make it incorrect. For example, using 'runs' instead of 'run' with the plural subject 'children' would be an error. The subject 'children' is plural, so the correct verb form to agree with this subject is 'run.'