Sentence With Direct Object. O.) exists in a sentence, and to identify it, ask "what?" or "whom?" about the verb. However, we still need to know what's going on.
In the second sentence Ronnie is the object of the preposition. That's where direct objects come in. The object of a sentence (if there is one) normally comes after the verb phrase.
The action is "writing" so ask yourself "what is being written"?
A direct object is a noun or pronoun that receives the action of the sentence.
You'll even get a lesson in diagramming sentences! Let's take the second word first. Nouns can function as direct objects.