不定代词通常是指以-one, -body, or –thing为结尾的词，例如Anyone下面再列举些相同类别的词：anyone, anybody, anything, each, every (as pronouns), everyone, everybody, everything, either, neither (may require a plural verb if paired with or/nor), no one, nobody, nothing, Someone, somebody, something, whatever, whoever
但是请注意，这里有五个词是单复数都存在的，也就是说无论动词后是单数还是复数都可行，请记住：Some, Any, All, More/Most。
而遇到这四大天王时我们怎么办?这时就要回想起刚才所说的Of-结构，只有遇到这五个词是看其后面的名词来决定其所使用的动词：
◆ Some of the money WAS stolen from my wallet. (money是单数)
◆ Some of the documents WERE stolen from the bank. (documents是复数)
还有none很特别，因为其后面都可以认为是单数或复数，而not one都认为是单数。例如Not one of my friends IS here this weekend.
实在搞不掂了，做题的时候就按照单数来吧。因为不定代词作主语一般都是单数。
