Objects
Nouns or pronouns completing the meaning of verbs (direct or indirect) or prepositions.
Many verbs need something to act upon — an object. The object completes the meaning of a transitive verb by answering the question whom? or what? after the verb. Without an object, a sentence like The dog chased feels incomplete; the listener is left waiting. Add a direct object — The dog chased its tail — and the thought is whole.
The direct object is the thing that receives the action directly. It can be a noun, a pronoun, a noun phrase, or even a clause: I know that you are right. Some verbs take not one but two objects. These are called ditransitive verbs — common ones include give, send, tell, show, offer, and pass. The indirect object identifies to whom or for whom the action is done: in Please pass me the salt, me is the indirect object and the salt is the direct object. Notice that the indirect object always comes before the direct object when no preposition is used.
You can rephrase most indirect objects as prepositional phrases with to or for. Give me the book becomes Give the book to me. Both forms are correct, but the prepositional version is more flexible — it can move to the end of the sentence for emphasis or clarity.
The relationship between verbs and objects depends on transitivity. Transitive verbs require a direct object (She kicked the ball). Intransitive verbs take none (She slept). Ditransitive verbs take both a direct and an indirect object (She gave him a gift). Some verbs can be used transitively or intransitively depending on context: She ate versus She ate a sandwich.
Objects of prepositions create prepositional phrases that function as modifiers or complements: under the bridge, in the morning, with him. When a pronoun follows a preposition, it must be in the objective case: between you and me (not between you and I), for him, to whom. This is one of the most common areas where even native speakers stumble, especially with compound objects — Mom gave the tickets to my brother and me is correct, not to my brother and I.
Examples
The dog chased its tail.
Direct object
Please pass me the salt.
Indirect object