The word data is already plural. The singular form of the word data is datum.
The plural form of use is uses.
We use is in singular form and are in plural form.
The noun quantum is a singularnoun. The plural form is quanta.A possessive noun requires the use of an apostrophe.The singular possessive form is quantum's. The plural possessive form is quanta's.
The plural form of understanding is understandings. But this would have very little use since the common use (to mean comprehension) is uncountable. Compare this to the much greater use of the plural "misunderstandings."
Had may be singular or plural. --- No! We use had if the noun is singular and we use have if the noun is plural! TY!ural.
attendees
The plural form of female donkeys is jennies.
"Les" means the plural form of "the", while "Des" means the plural form of "some".
Histologies, would be plural of histology.
Some people prefer to use the noun trout as an uncountable (both singular and plural) noun. Others prefer to use the plural form trouts. Both are correct.
No. Plural possessive is "their" Possessive pronouns do not use an apostrophe.
Need is in the singular form.Needs is in the plural form.