Verb Concord

2 answers

try a web search on noun verb agreement
Subject-verb concord is simply when the subject and the verb of a sentence "agree" with each other.

In other words, if the subject of the sentence is singular, the verb must be singular. If the subject of a sentence is plural, the verb must be plural. Easy as that.

Ex. The boy is standing. — subject: boy (singular) = verb: is (singular)

Ex. The boys are standing. — subject: boys (plural) = verb: are (plural)