Subject-verb agreement is a fundamental grammar rule that determines the relationship between the subject and verb in a sentence. It is imperative to ensure that the verb agrees with the subject in number and person. Failure to follow subject-verb agreement rules can result in confusion and make the sentence difficult to comprehend.

Consider the following examples:

– The cat chases the mouse. (correct)

– The cat chase the mouse. (incorrect)

In the first example, the subject (cat) is singular, and the verb (chases) is also singular. The second example is incorrect because the subject (cat) is singular, but the verb (chase) is plural.

Let`s take a closer look at the rules and principles underlying subject-verb agreement:

1. Singular subjects take singular verbs, and plural subjects take plural verbs.

– Correct: The dog barks at the cat.

– Incorrect: The dog bark at the cat.

2. When a sentence has a compound subject connected by “and,” the verb is usually plural.

– Correct: The cat and the dog play together.

– Incorrect: The cat and the dog plays together.

3. When a sentence has a compound subject connected by “or” or “nor,” the verb agrees with the subject closest to it.

– Correct: Either the cat or the dog is going to win the race.

– Incorrect: Either the cat or the dog are going to win the race.

4. When a sentence has a collective noun as the subject, the verb is usually singular if the group is acting as a unit. If the group is acting individually, the verb is usually plural.

– Correct: The jury has reached a verdict.

– Correct: The jury are debating their opinions on the verdict.

5. When a sentence has an indefinite pronoun as the subject, the verb usually agrees with the pronoun`s number (singular or plural).

– Correct: Everybody is responsible for their actions.

– Incorrect: Everybody are responsible for their actions.

In conclusion, mastering subject-verb agreement can make a significant difference in writing concise, coherent, and easily understandable sentences. By applying the rules mentioned above, you can create a consistent and engaging piece of writing that accurately conveys your message.