Final answer:
The correct sentence using a predicate pronoun as a subject complement is 'My boy-friend became my best friend,' where 'my best friend' is the subject complement that describes the subject 'my boy-friend'. Correct usage of pronouns in subject and object cases is key to proper grammar.
Step-by-step explanation:
The sentence that correctly uses a predicate pronoun as a subject complement is D: My boy-friend became my best friend. In this sentence, 'my best friend' serves as a subject complement, describing or renaming the subject 'my boy-friend.' It is a correct use of predicate pronoun because 'my best friend' is referring back to the subject 'my boy-friend' and not functioning as an object in the sentence.
It is essential to differentiate when to use subjective and objective case pronouns, particularly in compound structures. Subjective case pronouns, such as 'I' and 'we', function as the subject of a sentence. Objective case pronouns, like 'me' and 'us', function as objects of a sentence or preposition. For instance:
- Subjective Case: Antonio and I share an apartment downtown.
- Objective Case: The tour of the apartment was given to Antonio and me.
Pronouns must be used correctly in sentences even when used in comparisons or compound structures.