The noun form in the sentence "Mr. Smith is" is singular. "Mr. Smith" is a singular proper noun referring to one person.
noun that are plural in form but singular in meaning
Vita is singular. The plural form of vita is vitae
The noun cousin is the singular form. The plural noun is cousins.
No, clowns is a plural noun. The singular form is clown.
The noun mailbox is the singular form; the plural is mailboxes.
The noun children is the plural form of the singular noun child.
The form thief is the singular noun; the plural form is thieves.
noun that are plural in form but singular in meaning
No, Mice is a plural noun. Mouse is the singular noun.
No, the noun 'farm' is the singular form; the plural form is farms.
The noun 'neighbour' is the singular form.The plural form is neighbours.
"Nucleus" is a singular noun. The plural form is "nuclei".
Vita is singular. The plural form of vita is vitae
The noun 'dish' is the singular noun. The plural form is 'dishes'.
No, clowns is a plural noun. The singular form is clown.
The noun cousin is the singular form. The plural noun is cousins.
The noun 'beauty' is the singular form; the plural form is beauties.