Agreement Usage in Sentences: A Guide for Effective Communication

As a copy editor, one of the most crucial aspects of crafting effective content is ensuring correct agreement usage in sentences. Agreement refers to the grammatical alignment between different elements in a sentence, such as subject-verb or noun-pronoun agreement. Inaccurate or inconsistent agreement usage can lead to confusion, ambiguity, and detract from your message`s clarity. In this article, we will discuss the basics of agreement usage in sentences and how to avoid common mistakes.

Subject-Verb Agreement

The most common type of agreement is subject-verb agreement. In simple terms, this means that the verb in a sentence must match the subject in number and person. For example, in the sentence “She writes books,” “she” is a third-person singular subject, and “writes” is a third-person singular verb. In contrast, in the sentence “They write books,” “they” is a third-person plural subject, and “write” is a third-person plural verb.

One common mistake in subject-verb agreement is when a singular subject is paired with a plural verb (e.g., “The team are playing well”). Another mistake is when the subject and verb are separated by intervening clauses or phrases, leading to confusion over which one is the true subject (e.g., “The cat, as well as the dogs, chase mice”).

Noun-Pronoun Agreement

Another key agreement principle is noun-pronoun agreement. Simply put, this means that the pronoun used to refer to a noun must match it in number and gender. For example, in the sentence “John picked up his book,” “John” is a masculine singular noun, and “his” is a masculine singular pronoun. In contrast, in the sentence “The women went to their cars,” “women” is a plural feminine noun, and “their” is a plural feminine pronoun.

A common problem with noun-pronoun agreement is when a pronoun is used ambiguously, making it unclear which noun it refers to. For example, in the sentence “The children saw the monkeys, and they were excited,” it is uncertain whether “they” refers to the children or the monkeys. Another issue is when a singular non-binary subject is paired with a plural pronoun (e.g., “They enjoys reading”).

Other Types of Agreement

In addition to subject-verb and noun-pronoun agreement, there are other types of agreement that can affect sentence structure and meaning. For example, adjectives must agree with the noun they modify in gender, number, and case (e.g., “The red cars are fast”). Additionally, collective nouns such as “group” or “team” can take either singular or plural verbs depending on their context (e.g., “The team is playing well” versus “The team are arguing”).


Agreement usage in sentences is a vital component of effective communication, ensuring clarity and coherence in your writing. By mastering subject-verb and noun-pronoun agreement, avoiding common errors, and being aware of other types of agreement, you can create content that is both grammatically correct and engaging to your audience. Remember, your writing reflects your professionalism, so take the time to proofread and edit your work carefully. Your readers will thank you for it!