1. Singular indefinite pronouns: These refer to a single, unspecified person or thing. Some examples include:
* Someone, anyone, everyone, no one, nobody
* Something, anything, everything, nothing
* Each, either, neither
2. Plural indefinite pronouns: These refer to multiple, unspecified people or things. Some examples include:
* Some, any, many, few, several
* All, both, most
It's important to note that some indefinite pronouns can be either singular or plural depending on the context:
* None: Can be singular or plural depending on what it refers to.
* None of the *food* is left. (Singular)
* None of the *students* were present. (Plural)
* All: Similar to "none," it depends on the noun it modifies.
* All of the *cake* is gone. (Singular)
* All of the *guests* have arrived. (Plural)
It's also important to remember that some indefinite pronouns are always singular:
* Each, either, neither
Understanding the singular or plural nature of indefinite pronouns is crucial for correctly using verbs and pronouns in agreement.