Copy is already the singular
Copies is the plural
The singular possessive form of copy is copy's.
copy's
copies.The rule is - if the verb ends in consonant + y then the y changes to iesexamples: fly - flies / study - studies.
The noun 'copy' is a singular, common, concrete noun; a word for something made to be similar or identical to another; a word for a specific issue of a book, magazine, picture, etc.; a word for a thing. The plural noun is 'copies'. The word 'copy' is also a verb: copy, copies, copying, copied.
The indefinite pronoun 'anyone' is considered singular and may take the third person singular verb 'requests'. The adjective pronoun 'their; may have a singular or a plural antecedent. It is singular when the gender of the antecedent is not specified, as in the case of an indefinite subject pronoun. 'Their' is in agreement with 'anyone'.
The word 'copy' is not a pronoun.The word copy (copies) is a noun: We need a copy of the contract.The word copy (copies copying copied) is a verb: Please copy the contract for the board.A pronoun is a word that take the place of a noun in a sentence. The pronoun the takes the place of the singular noun 'copy' is 'it'; the pronouns that take the place of the plural noun 'copies' is 'they' as a subject, and 'them' as an object. Example:I made a copy and put it on your desk.I made some copies for the board and put them in the board room so they will be there when the members arrive.
Anyone who requests a copy of the game may have it for their video library or his or her video libraryThe antecedent for the possessive adjectives ('their' or 'his or her') is the indefinite pronoun anyone.The indefinite pronoun 'anyone' is a singular form.The plural possessive adjective 'their' is commonly used for a singular form antecedent as being less clumsy than 'his or her' for mixed gender or unknown gender antecedents, although the singular form is technically correct, the plural form 'their' is commonly accepted.
The carrots came from my neighbor's garden.The man's car was not damaged.I can get a ride with Susan's mom.That paper's color will not copy well.We were all exhausted by the journey's end.
"Has" is singular, e.g. He has, she has. "Have" is plural, e.g. They have, we have. The exception is "I" - e.g. I have.
practitioner is singular (plural practitioners)sofa is singular (plural sofas)satellite is singular (plural satellites)clips is plural (singular clip)dentist is singular (plural dentists)dollars is plural (singular dollar)article is singular (plural articles)magazines is plural (singular magazine)laminator is singular (laminators is plural)radios is plural (singular radio)
The word singular is an adjective. Adjectives do not have singular or plural forms; adjectives have comparative forms: positive: singular comparative: more singular superlative: most singular
Quantum is singular, not singular possessive. The singular possessive form is quantum's.