The plural form of the noun skater is skaters.
The plural possessive form is skaters'.
Example: The skaters' performances at the ice show were phenomenal.
The word 'skated' is not a noun; skated is the past participle, past tense of the verb to skate.The noun form is skate (plural skates), a word for footwear worn to skate. Examples:Verb: We roller skated in the park today.Noun: The lace on my left skate is broken. This pair of skates is brand new.
There is no plural form. Do and Do not are verbs
The plural form of him, her, or it is them. (objective pronouns)
Bridges is the plural form of bridge.
The plural form of "is" is "are."
The plural form of "was" is "were."
The plural form of "I" is "we."
"Groceries" is the plural form of "grocery."
"Beliefs" does not have a plural form, as it is already plural. Beliefs is the plural form of belief.
The plural form of mouth is mouths. The plural form of month is months. The Mounth is a range of hills in Scotland and does not have a plural form.
The plural form of the demonstrative pronoun 'that' is those.
Trenches is the plural form.