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Difference Between Subjects and Objects

  • Post last modified:March 22, 2023
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Subjects and objects are two fundamental components of a sentence in grammar. The subject is the person, thing, or idea that performs the action in a sentence or about which something is said. It typically appears at the beginning of a sentence and is often followed by a verb.

The object, on the other hand, is the person, thing, or idea that receives the action in a sentence. It typically follows the verb and is often preceded by a preposition. In other words, the subject is the “doer” of the action, while the object is the “receiver” of the action.

Importance of understanding the difference between subjects and objects

Understanding the difference between subjects and objects is important for effective communication in both written and spoken language. Here are some reasons why:

  • Sentence structure: Subjects and objects play a crucial role in determining the structure of a sentence. Knowing how to correctly identify the subject and object can help you construct grammatically correct sentences and avoid confusing sentence structures.
  • Meaning: Identifying the subject and object in a sentence can help you understand the meaning of the sentence. The subject is typically the focus of the sentence, while the object provides additional information about what is happening in the sentence.
  • Clarity: Understanding the difference between subjects and objects can help you communicate more clearly. By using the correct subject-object relationship, you can convey your message accurately and avoid misunderstandings.
  • Writing style: When writing, knowing how to correctly use subjects and objects can help you vary the structure of your sentences, making your writing more interesting and engaging to readers.
  • Communication skills: Proper use of subjects and objects is essential for effective communication, whether in writing or speaking. It shows that you have a good command of the language and can express your thoughts and ideas clearly and effectively.

What is a subject?

A subject is a noun or pronoun that performs the action of the verb or is being described or identified in a sentence. In other words, the subject is the main topic or focus of the sentence, and it tells us who or what is doing the action or being described.

In the sentence “Mary is running in the park,” the subject is “Mary,” as she is the one performing the action of “running.The big brown dog barked at the mailman,” the subject is “The big brown dog,” as it is the one performing the action of “barking.”

In most cases, the subject comes at the beginning of a sentence, although there may be exceptions. The subject can be a single word or a group of words acting as a single unit.

What is an object?

An object is a noun or pronoun that receives the action of the verb or is affected by the action described in the sentence. In other words, the object is the person or thing that is directly affected by the action of the verb.

In the sentence “I am eating an apple,” the object is “an apple,” as it is the thing being directly affected by the action of “eating. “She bought a new car,” the object is “a new car,” as it is the thing being bought.

There are two types of objects: direct objects and indirect objects. A direct object is a noun or pronoun that directly receives the action of the verb, as in the examples above. An indirect object, on the other hand, is a noun or pronoun that is indirectly affected by the action of the verb, and it typically appears with a preposition, as in the sentence “I gave the book to her.” Here, “the book” is the direct object, and “her” is the indirect object.

Objects can also be used as object complements, which are words or phrases that describe the direct object or rename it, as in the sentence “I painted the wall blue.” Here, “blue” is the object complement, describing the direct object “the wall.”

Differences between subjects and objects

There are several differences between subjects and objects in grammar. Here are the main differences:

  1. Grammatical differences: The subject of a sentence is typically a noun or pronoun that appears at the beginning of the sentence, followed by a verb. The object, on the other hand, appears after the verb and is typically a noun or pronoun that receives the action of the verb.
  2. Positional differences: The subject of a sentence typically appears before the verb, while the object appears after the verb. In some cases, the object can also appear before the verb when a sentence is structured in a passive voice.
  3. Semantic differences: The subject of a sentence is typically the doer or the initiator of the action, while the object is the receiver or the target of the action. In other words, the subject is the main topic or focus of the sentence, while the object provides additional information about what is happening in the sentence.
  4. Syntactical differences: The subject of a sentence is often the topic of the sentence, and the sentence is structured around it. The object, on the other hand, is often used to provide additional information about the action of the verb.
  5. Use of pronouns: In English, the subject pronouns are I, you, he, she, it, we, and they, while the object pronouns are me, you, him, her, it, us, and them. In other words, the subject pronouns are used as the subject of a sentence, while object pronouns are used as the object of a verb or preposition.

Understanding these differences is important for constructing grammatically correct sentences and conveying meaning effectively.

Examples of sentences with subjects and objects

Here are some examples of sentences with subjects and objects:

Mary ate a sandwich.

  • Subject: Mary
  • Object: sandwich

The dog chased the cat.

  • Subject: dog
  • Object: cat

She gave the book to her friend.

  • Subject: She
  • Direct Object: book
  • Indirect Object: friend

I am reading a book about history.

  • Subject: I
  • Object: a book about the history

The teacher wrote comments on the student’s papers.

  • Subject: teacher
  • Direct Object: comments
  • Indirect Object: students’ papers

They are watching a movie in the theater.

  • Subject: They
  • Object: movie

The bird flew over the trees.

  • Subject: bird
  • Object: trees

We baked cookies for our friends.

  • Subject: We
  • Direct Object: cookies
  • Indirect Object: friends

The rain soaked through my clothes.

  • Subject: rain
  • Object: clothes

He painted a picture of his dog.

  • Subject: He
  • Object: picture of his dog

Common errors in identifying subjects and objects

Identifying subjects and objects correctly can be challenging, and there are some common errors that people make when trying to identify them. Here are some common errors to avoid:

  • Confusing objects with subject complements: Sometimes, people mistake subject complements (words or phrases that follow linking verbs to describe or rename the subject) for objects. For example, in the sentence “He is a doctor,” “doctor” is not an object but a subject complement describing “he.”
  • Mistaking objects for subject pronouns: Object pronouns (me, you, him, her, it, us, and them) are used as the object of a verb or preposition, not as the subject of a sentence. For example, in the sentence “Me and him went to the store,” “me and him” should be “he and I” since “he” is the subject, and “I” is the object.
  • Failing to recognize implied subjects or objects: Sometimes, subjects and objects are not explicitly stated in a sentence but are implied. For example, in the sentence “Go away!” the subject “you” is implied, and in the sentence “Please pass the salt,” the object “salt” is implied.
  • Confusing indirect objects with prepositional phrases: Indirect objects (nouns or pronouns that receive the direct object of a sentence) are often accompanied by prepositions, but not all prepositional phrases are indirect objects. For example, in the sentence “The book is on the table,” “on the table” is a prepositional phrase, not an indirect object.
  • Misidentifying the subject in a sentence with a complex structure: In complex sentences, the subject may not appear at the beginning of the sentence, making it challenging to identify. It’s essential to read the sentence carefully to determine who or what is performing the action.

Conclusion

Subjects and objects are crucial for constructing grammatically correct sentences and conveying meaning effectively. The subject is typically the doer or initiator of the action, while the object is the receiver or the target of the action.

The subject of a sentence is often the topic of the sentence, while the object provides additional information about the action of the verb. Common errors in identifying subjects and objects include confusing objects with subject complements, mistaking objects for subject pronouns, failing to recognize implied subjects or objects, confusing indirect objects with prepositional phrases, and misidentifying the subject in a sentence with a complex structure.

By avoiding these errors and practicing identifying subjects and objects, one can become more confident and proficient in using them in their writing and communication.

Reference Link

Here is a reference link that provides additional information about subjects and objects in English grammar:

Reference Books

Here are some reference books about English grammar that cover the topic of subjects and objects:

  • “A Comprehensive Grammar of the English Language” by Randolph Quirk, Sidney Greenbaum, Geoffrey Leech, and Jan Svartvik
  • “The Cambridge Grammar of the English Language” by Rodney Huddleston and Geoffrey K. Pullum
  • “Longman Student Grammar of Spoken and Written English” by Douglas Biber, Susan Conrad, and Geoffrey Leech
  • “Understanding and Using English Grammar” by Betty Schrampfer Azar and Stacy A. Hagen
  • “Oxford Modern English Grammar” by Bas Aarts