The apostrophe after the s denotes a group of riders, so is plural.
The noun rides is the plural for for the singular ride: We took a ride on the roller coaster. The rides that I don't like are the snake and the bat.The word rides is also the third person, singular present of the verb to ride: He rides the train to work.
The number of a pronoun is singular or plural. A pronoun must agree with its antecedent in number. A singular antecedent requires a singular pronoun; a plural antecedent or a compound antecedent requires a plural pronoun.Examples:Jane is coming and she will bring the desert. (singular)Joe and Joan are coming and they will bring the beverages. (plural)Jim rides his bike to school. (singular)The boys on our block ride their bikes to school. (plural)The personal pronoun 'you' functions as both singular and plural: Jack, I've made lunch for you. (singular)Boys, I've made lunch for you. (plural)
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)
singular and plural
Singular: book / Plural: books Singular: cat / Plural: cats Singular: child / Plural: children Singular: foot / Plural: feet
Are is plural. "Is" is singular. For example, "There is a glove on the chair". That is singular. "There are gloves on the chair". That is plural.
"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.
The word team is singular; the plural form is teams.
Who may be singular or plural.
This is singular. These is the plural form.
These is plural, this is singular
'These' is the plural form of 'this'.