Subject verb agreement is an important aspect of English language. It refers to the agreement between the subject and the verb in a sentence. In simple terms, it means that if the subject of a sentence is singular, the verb must also be singular. Conversely, if the subject is plural, the verb must also be plural. Here are some facts about subject verb agreement that every professional should know.

1. The subject and verb must agree in number: This is the basic rule of subject verb agreement. If the subject is singular, the verb must be singular. Similarly, if the subject is plural, the verb must be plural. For example, “The dog barks” is correct because “dog” is a singular subject and “barks” is a singular verb. On the other hand, “The dogs bark” is correct because “dogs” is a plural subject and “bark” is a plural verb.

2. Collective nouns can be singular or plural: Collective nouns are words that refer to groups of people or things. Examples of collective nouns include team, family, committee, and staff. Collect nouns can take either singular or plural verbs depending on context. For example, “The team is playing well” is correct because “team” is a singular noun. However, “The team are arguing over their roles” is correct because “team” refers to multiple people.

3. Compound subjects take plural verbs: Compound subjects are two or more subjects that are joined by “and”. In this case, the verb used must be plural. For example, “John and Mary are going to the party” is correct because “John and Mary” are two individuals and the verb “are” is plural.

4. Indefinite pronouns can be singular or plural: Indefinite pronouns refer to people or things in a general way, e.g. anyone, someone, everyone, no one, anybody, nobody, somebody, etc. The verb used with indefinite pronouns depends on the context of the sentence. For example, “Everyone is invited to the meeting” is correct because “everyone” is a singular pronoun. However, “Some of the students are absent” is correct because “some” refers to multiple people.

5. Inverted sentences: In some cases, the subject and verb in a sentence may appear in a different order, e.g. “Here comes the bus”. In such cases, the verb must still agree with the subject. For example, “Here come the boys” is correct because “boys” is a plural subject, even though it appears after the verb.

In conclusion, subject verb agreement is an essential aspect of the English language. As a professional, it is crucial to have a good understanding of subject verb agreement to ensure that written content is grammatically correct and optimized for search engines. The above facts should help in achieving this.