If the subjects are the two singular and are connected by the words “or”, ni”, “ni”, “soit” or “not only/but also”, the verb is singular. 10. The only time the object of the preposition decides which forms are plural or singulate is when subjects of nouns and pronouns such as “some”, “mi”, “none”, “plus” or “all” are followed by a prepositional sentence. Then, the object of the preposition determines the form of the verb. 6. When two subjects are connected by “and”, they usually need a plural form. 7. The verb is singular when the two subjects separated by “and” refer to the same person or the same thing as a whole. You will find other sentences that show the correct correspondence between the subject and the verb in examples of subject-verb agreement. You can also download our shorter top 10 rule infographic and keep it handy. 8.