不定代詞的功能：1、 做主語：Is everybody here？All is well and ends well.Nobody else said anything.2、 做賓語：I know a little about the novel.I am speaking for myself， not for others.Here are two books，you can take either of them.3、 做表語：That’s all for today.It’s too much.I’m not somebody， I’m nobody.4、 做定語：Each book on the shelf is worth reading。Let me have another cup of tea.Many people attended the meeting.5、 做狀語：（部分代詞）The film lasted some two hours.Ts she any better today？They will come back a little later.all， ever， eacheach，可以指小到兩個，all、every 則至少指三個。all 表所有專案的總和，是一個不可分割的整體。eg：All the students contributed to the fund.every 是由各個專案集合而成一個整體，其構成成分有共性。eg：every child in the class passed the exam.each 的注意力集中在個別專案上，其構成成分各具特性。eg：I asked all the children，each told a different story.
擴充套件
英語的不定代詞有 all, each, both, either, neither, one, none, little, few, many, much, other, another, some, any, no, (a) few, (a) little, both, enough, every 等，以及由 some, any, no 和 every 構成的合成代詞(即somebody, anyone, nothing 等)。在這些不定代詞中，多數都能作主語、賓語、表語或定語，但是代詞 none 以及由 some, any, no 和 every 構成的合成代詞只能作主語、賓語或表語，不能作定語，而 no 和 every 則只用作定語。
不定代詞的用法
有些不定代詞用於指兩者(如both, either, neither)，有的不定代詞用於指三者(如all, any, none, every)
不定代詞的功能：1、 做主語：Is everybody here？All is well and ends well.Nobody else said anything.2、 做賓語：I know a little about the novel.I am speaking for myself， not for others.Here are two books，you can take either of them.3、 做表語：That’s all for today.It’s too much.I’m not somebody， I’m nobody.4、 做定語：Each book on the shelf is worth reading。Let me have another cup of tea.Many people attended the meeting.5、 做狀語：（部分代詞）The film lasted some two hours.Ts she any better today？They will come back a little later.all， ever， eacheach，可以指小到兩個，all、every 則至少指三個。all 表所有專案的總和，是一個不可分割的整體。eg：All the students contributed to the fund.every 是由各個專案集合而成一個整體，其構成成分有共性。eg：every child in the class passed the exam.each 的注意力集中在個別專案上，其構成成分各具特性。eg：I asked all the children，each told a different story.
擴充套件英語的不定代詞有 all, each, both, either, neither, one, none, little, few, many, much, other, another, some, any, no, (a) few, (a) little, both, enough, every 等，以及由 some, any, no 和 every 構成的合成代詞(即somebody, anyone, nothing 等)。在這些不定代詞中，多數都能作主語、賓語、表語或定語，但是代詞 none 以及由 some, any, no 和 every 構成的合成代詞只能作主語、賓語或表語，不能作定語，而 no 和 every 則只用作定語。