单词indefinite pronoun
n.: 不定代词（如 anything 和 everyone）
网络: 不定代名词；I不定代名词一；定代诋
不定代词（如 anything 和 everyone）:
a pronoun that does not refer to any person or thing in particular, for exampleanything andeveryone
When an indefinite pronoun is the subject, it always takes a singular verb.
不定代词作主语，总与动词的单数形式搭配。
On the Semantic Vagueness and Pragmatic Ambivalence of the Indefinite Pronoun in the Cognitive Perspective
认知视域中不定代词的语义模糊和语用模糊
When we refer back to an indefinite pronoun we normally use a plural pronoun:
当我们提及到不定代词时，通常也会用复数名词：
We use a singular verb after an indefinite pronoun:
不定代词后用动词单数。