Here's why:
* Direct Object: This is the noun or pronoun that receives the action of a transitive verb. For example, in the sentence "She threw the ball," "ball" is the direct object.
* Indirect Object: This is the noun or pronoun that benefits from the action of a transitive verb. It usually comes before the direct object. For example, in the sentence "He gave her a book," "her" is the indirect object.
Let me know if you have any more grammar questions!