solar system is singular
The plural of orrery (mechanical model of the solar system) is orreries.
Skies is the plural form for the singular noun, sky.
Singular = astronaut, singular possessive = astronaut's. Plural = astronauts, plural possessive = astronauts'.
"Nebula" is a singular word. It refers to a cloud of gas and dust in space. "Nebulae" is the plural form of the word.
Tardies.Tardy is not plural tardy is an adjective and adjectives don't have plural or singular forms
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 plural of orrery (mechanical model of the solar system) is orreries.
The word team is singular; the plural form is teams.
'These' is the plural form of 'this'.
Who may be singular or plural.
This is singular. These is the plural form.
These is plural, this is singular
"Notebook" is singular. The plural form is "notebooks."