The personal pronouns I and it are singular only. The personal pronoun you is both singular and plural.
The first person pronoun I is the subjective, the objective is me.
The third person pronoun it is the subjective and the objective.
The plural form for the subjective I is we; the plural form for the objective me is us.
The plural form for the subjective it is they; the plural form for the objective it is them.
The second person pronoun you is both singular and plural, both subjective and objective. Old English once used a different form for number and case:
But, over the centuries, the form 'you' became used for all of these functions.
The plural first person, subjective pronoun is we. For example:
You and I can meet at six and we can take just one car to the concert.
If I were to say "you and I are friends" I would be talking about two people, not just myself. Hypothetically let's say that your name is Fred, so you and I would mean Blobbert and Fred. Anything more than one person is plural, that's what the term means, more than one.
It is always considered as plural.
Toby's is considered a plural and Toby singular
singular
Both ghettoes and ghettos are considered correct.
The correct word is themselves.Although the word "them" has regained popular use as a singular third-person pronoun of indefinite gender(him/her), the self version is considered incorrect and should be used for the plural "them" only. The word "they" whether considered singular or plural, always uses the plural form of a verb.
It is always considered as plural.
Ya'll is considered a plural because it means you all and you all is a plural
Toby's is considered a plural and Toby singular
There is no plural form since it is considered an uncountable noun.
singular
Lis pendens is considered a singular and plural version of the word. You would NOT spell it "lis pendenses" as the plural. You simply use the same word as singular and plural.
Both ghettoes and ghettos are considered correct.
The noun 'clientele' is singular, a word for clients collectively, customers considered as a group. There is no plural form.
Awards inventory is singular. The plural would be awards inventories.
The correct word is themselves.Although the word "them" has regained popular use as a singular third-person pronoun of indefinite gender(him/her), the self version is considered incorrect and should be used for the plural "them" only. The word "they" whether considered singular or plural, always uses the plural form of a verb.
Even though the word couple refers to two of the same thing considered together, it is not plural. The plural form is couples. Examples: We went to dinner with another couple. (singular) We went to dinner with two couples. (plural)
There is no plural form for mankind. The noun mankind is an uncountable (mass) noun, a word for all humans considered as a single group, a word for a concept.