Subject-verb correspondence is important because it makes a sentence easier to understand. It also helps to make the sentence resonate better. Indeterminate pronouns can pose particular problems when adapting subjects. The rest of this class studies the problems of concordance of subjects that can result from the placement of words into sentences. There are four main problems: prepositional sentences, clauses that begin with whom, this or what, sentences that begin here or there, and questions. This is why there are three rules of conformity of important topics that should be remembered when a group subject is used as a subject: in the example above, the singular abrège is in agreement with the Singularubsular Boy. Fortunately, most verbs are not irregular. So, what is the pattern of regular verbs? 1.