The noun 'use' is singular noun. The plural form is uses.
The word 'use' is also a verb: use, uses, using, used.
Phenomena is a plural noun. The singular form is phenomenon. There is some tendency to use phenomena as a singular noun, but it is not actually a legitimate form.
Singular. America is a great country (singular) vs. America are a great country (plural - wrong)
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.
Who may be singular or plural.
diagnosis is singular diagnoses is plural sis = singular ses = plural
Don't know what an insubordinate clause is, but I do know that "was" is singular, and "were" is plural. 2nd person (you) is an exception, you use "were" in both singular and plural: You were (singular, one person) You were (plural, all of you) Otherwise, like I said, you just use "was" in 1st person and 3rd person singular, and "were" in 1st and 3rd plural: I was (1st person singular) He/she/it was (3rd person singular) We were (1st person plural) They were (3rd person plural)
Had may be singular or plural. --- No! We use had if the noun is singular and we use have if the noun is plural! TY!ural.
When you have a singular subject, you use is.Just as if you have a plural subject, you use are.For example,The dog (singular) is (singular) outside in the yard.Whereas,The dogs (plural) are (plural) playing in the grass.Hope this helps ! :)
Is, is singular and are is plural
"this" is singular. "These" is plural.
vegetable is singular, vegetables is plural. if the verb is plural, use vegetables. if it is singular, use vegetable.
Has is used only for the third person singular (he, she, or it has).All other persons, singular or plural, use "have."
For the informal singular "you", use tú.For the singular formal, use usted.For plural informal, use vosotros.For plural formal, use ustedes.
Use "was" when referring to a singular subject, and use "were" when referring to plural subjects or the second person singular (you). For example: "He was happy" (singular subject) vs. "They were happy" (plural subject) or "If I were you, I would go" (second person singular).
their is plural and his/her is singular
this is.......Singular these are...plural
It means you have to use singular and plural