My sister loves to read mystery novels. She finishes at least one book every week.
- Sentence 1: The subject is "My sister", which is third-person singular. The predicate is "loves", which is correctly conjugated in the present tense for a third-person singular subject.
- Sentence 2: The subject is "She", which is a pronoun replacing "My sister". Since "She" is third-person singular, the verb "finishes" is correctly conjugated in agreement with the subject. The pronoun "She" correctly refers back to "My sister", making the pronoun-antecedent agreement correct.