A verb will agree in number with the sentence’s subject.
one and the verb is is. Both the subject and the verb are singular.
many, and the verb, are, are plural.
Notice how in these example sentences the subjects and verbs agree in
design, agrees in number with the singular verb, is.)
portraits, agrees in number with the plural verb, are.)
Note: When you are working with the indefinite pronouns that can be either
singular or plural (all, any, more, most, none, and some), the verb will agree in
number with the object of the preposition in the prepositional phrase that is
associated with the verb.
plural, match the verb with the object of the preposition. As newspaper
is singular, use is [not are] as the verb.)
or plural, match the verb with the object of the preposition. As newspapers
is plural, use are [not is] as the verb.)