Subject In A Sentence

Updated May 11, 2023

Subject in a Sentence: Understanding the Basics

Have you ever wondered what a subject is in a sentence? Perhaps you've come across this term while studying grammar or writing, but you're still unsure about its meaning and importance. Fear not! In this article, we will delve into the basics of a subject in a sentence and explore its significance in communication. So, let's get started!

What is a Subject?

In grammar, the subject is a fundamental component of a sentence. It is the noun, pronoun, or noun phrase that performs the action or is being described in the sentence. In simpler terms, the subject is the "doer" or the main focus of the sentence.

For example, let's consider the sentence: "John plays the guitar." Here, "John" is the subject as he is the one performing the action of playing the guitar. Similarly, in the sentence "The cat is sleeping," "The cat" is the subject as it is being described as being in a state of rest.

Identifying the Subject

Identifying the subject in a sentence can be quite straightforward. One way is to ask yourself the question "Who or what is the sentence about?" The answer to this question will likely be the subject.

To further aid in identifying the subject, it is essential to remember a few key points. First, the subject is typically located at the beginning of a sentence, before the verb. Second, the subject and the verb must agree in number. This means that if the subject is singular, the verb should be singular as well, and vice versa.

Consider the sentence: "She walks to school." By asking ourselves, "Who or what is the sentence about?" we can determine that "She" is the subject. Additionally, since the subject is singular, the verb "walks" is also singular.

Importance of the Subject

Understanding the subject in a sentence is crucial for effective communication. It helps convey information clearly and accurately. Without a subject, a sentence may lack meaning or become confusing.

By identifying the subject, we can also determine the relationship between different sentence elements. The subject provides context and guides the reader or listener in understanding the intended message.

Moreover, the subject plays a significant role in sentence structure and grammar rules. It helps establish subject-verb agreement and enables us to apply proper tense and form in our writing or speech.

Subject vs. Object

Before concluding, it's important to distinguish between the subject and the object in a sentence. While the subject performs the action or is being described, the object receives the action. In other words, the subject acts upon the object.

For instance, in the sentence "Sarah gives John a book," "Sarah" is the subject as she is the one performing the action of giving. On the other hand, "John" is the object as he is the one receiving the book.


Understanding the concept of a subject in a sentence is essential for effective communication and proper grammar usage. By identifying the subject, we can convey information clearly, establish subject-verb agreement, and guide the reader or listener in comprehending our message.

Remember, the subject is the "doer" or the main focus of a sentence. It helps us determine who or what the sentence is about. So, next time you come across a sentence, try identifying the subject and notice how it contributes to the overall meaning and structure. Happy writing!

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