These are singular indefinite pronouns:
- each, either, neither, one
- no one, nobody, nothing
- anyone, anybody, anything
- someone, somebody, something
- everyone, everybody, everything
A singular indefinite pronoun takes a singular verb.
- Everyone is happy.
- No one knows what to do in this situation.
When a singular indefinite pronoun serves as an antecedent in a sentence, it must take a singular pronoun referent.
- Everyone brought his book.
- No one forgot her homework.
These are plural indefinite pronouns:
- several, few, both, many
A plural indefinite pronoun takes a plural verb.
- Both are acceptable.
- Few are going to the party.
When a plural indefinite pronoun serves as an antecedent in a sentence, it must take a plural pronoun referent.
- Both passed their tests.
- Few did not understand their assignments.
These are indefinite pronouns that can be singular or plural depending on how they are modified by a prepositional phrase:
- some, any, most, all, none (Use this mnemonic device: SAMAN)
The number of the verb or the pronoun referent depends on whether the noun is countable or uncountable.
When the object of the preposition is uncountable, use a singular verb.
- All of my knowledge was useful during the test. (Knowledge cannot be counted: how many knowledge? This does not make sense.)
- None of the ice cream was eaten. (How many ice cream? Ice cream cannot be counted.)
When the object of the preposition is uncountable, use a singular pronoun referent.
- All of her work made its impact on her grades. (Work cannot be counted: how many work?)
- Some of the water left its mark on the wooden table. (How many water? Water cannot be counted.)
When the object of the preposition is countable, use a plural verb.
- Most of the words were on the vocabulary test. (Words can be counted.)
- None of these sentences are hard to understand. (Sentences can be counted.)
When the object of the preposition is countable, use a plural pronoun referent.
- All of the books were useful in their own ways. (Books can be counted.)
- Some of my friends drove their cars to the beach. (Friends can be counted.)
