What is the correct pronoun to use in comparative sentences?

In comparative sentences, the correct pronoun to use is often a subject pronoun, which serves the grammatical role of the subject of the sentence. In this context, "he" is the appropriate choice because it functions as a subject pronoun.

For example, if we were to create a comparative sentence, it could look like this: "He runs faster than his brother." Here, "he" performs the action of running and makes a comparison, which adheres to the structure typical in comparative constructs.

The other pronouns—"him," "they," and "them"—serve different grammatical functions. "Him" and "them" are object pronouns used when the pronoun is receiving the action, while "they" is a subject pronoun but is not typically used for singular comparisons. Therefore, "he" is the most accurate and grammatically correct choice for use in a comparative context.