不定代词的用法
有些不定代词用于指两者(如both, either, neither)，有的不定代词用于指三者(如all, any, none, every)
不定代词的功能：
1、 做主语：
Is everybody here？
All is well and ends well.
Nobody else said anything.
2、 做宾语：
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、 做表语：
That’s all for today.
It’s too much.
I’m not somebody， I’m nobody.
4、 做定语：
Each book on the shelf is worth reading。
Let me have another cup of tea.
Many people attended the meeting.
5、 做状语：（部分代词）
The film lasted some two hours.
Ts she any better today？
They will come back a little later.
all， ever， each
each，可以指小到两个，all、every 则至少指三个。
all 表所有项目的总和，是一个不可分割的整体。
eg：All the students contributed to the fund.
every 是由各个项目集合而成一个整体，其构成成分有共性。
eg：every child in the class passed the exam.
each 的注意力集中在个别项目上，其构成成分各具特性。
eg：I asked all the children，each told a different story.
扩展
英语的不定代词有 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 构成的合成代词(即somebody, anyone, nothing 等)。在这些不定代词中，多数都能作主语、宾语、表语或定语，但是代词 none 以及由 some, any, no 和 every 构成的合成代词只能作主语、宾语或表语，不能作定语，而 no 和 every 则只用作定语。
