LanGeek
这些代词和限定词指的是肯定陈述中引入的不定人或事物。
审查
闪卡
拼写
测验
used to denote a certain, but unspecified, portion or selection of things or people
一些
a person who is not mentioned by name
谁
a person whose identity is not specified or known
used to mention a thing that is not known or named
某物
used to express an unspecified amount or number of something
used to refer to an unspecified selection within a group or category
肯定
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