The noun quarters is plural whether it is referring to coins, parts of an animal, one of four school terms, rooms or lodgings, etc.
The singular noun is "quarter".
The word team is singular; the plural form is teams.
These is plural, this is singular
if a word refers to a single item it is singular. if it refers to lots of things it is plural."Potato" is singular "potatoes" is a plural word."mouse" is singular, "mice" is a plural word."person" is singular, "people" is a plural word.
The word 'she' is in singular form. The plural for 'she' would be 'they'.
"Have" may be singular or plural: I have; we have.
The word metastasis is singular, metastases is plural.
No, the word "list" is singular. The plural form of "list" is "lists."
Caveman is singular. Cavemen is plural.
Verbs cannot be singular or plural. Has is after singular nouns.
It's singular. The plural is cafeterias.
Tool is singular. Tools is plural.
Singular Plural is caterpillars