One of the most basic, yet confusing, rules of grammar are that the number of the verb and the number of the subject must be the same in the present tense. Simply expressed, it shows that whether the subject is solitary or plural, we must always remember to connect the verb with a subject. As long as we are unable to identify the statement's subject and verb, it is not hard to apply this rule.
Let's evaluate the provided verbs:
At a concert, Rohan performs a song.
My brother sings a song at a concert
Both verbs are in the present tense and describe the present or ongoing verb, however, the first verb ends in - while the second verb has a different ending. Can you explain why this disparity exists?
The first sentence's subject (merdin) is singular, so the verb (hangs) must be pluralized with a -s. The second sentence's verb, sing, is left without a final since the subject, sisters, is plural. However, keep in mind that only verbs in the present tense are covered by this criterion.
You can see that following the basic rule of subject-verb agreement relies on your ability to correctly identify subjects and verbs in sentences. To put into practice the rule that the verb and subject must agree in number, consider the following four recommendations.
Add a -s to the verb if the subject is a singular noun, such as a name for a person, place, or thing.
Mr. Charlie makes pizza.
Bamboo grows in humid regions.
Add a -s to the verb if any of the third-person singular pronouns are the subject: he, she, it, it, and that.
If the subject pronouns are I, you, we, or they, don't add an -s to the verb.