Since collective nouns are counted as one, they are singular and require a singular verb. Some frequently used collective names are group, team, army, herd, family, and class. Add it to the singular form of the third person of regular verbs that end in -sh, -x, -ch, and -s. (I want me to fix/fix to you, look/look, kiss/Kiss.) Imagine that you are a potential customer and you have seen this ad online. Could you call Terra Services to carry out your next project? Probably not! Errors in the subject-verb agreement can cost a business. The attention to grammatical detail guarantees a professionalism that customers recognize and respect. The subject and the verb are the most important elements of a sentence. The relationship between the subject and the verb depends on two themes: the person and the number. The verb of a sentence must match the subject in terms of person and number. Subject-verb correspondence describes the correct correspondence between subjects and verbs.