What is the grammatical function of 'affect'?

The term 'affect' primarily functions as a verb. In its verb form, it means to influence or have an impact on something. For example, one might say, "The weather can greatly affect our mood," where 'affect' indicates the action of influencing. Understanding its function as a verb is crucial in constructing sentences correctly, as it determines how it interacts with nouns and other parts of speech in a sentence.

This clarity in its grammatical role helps in the proper interpretation of texts and effective communication, as recognizing 'affect' as a verb informs the reader or speaker when to use it in relation to subjects and objects in a sentence.