复数。none of后面的名词为复数名词或代词，谓语动词要用复数；如果是不可数名词，要用单数。none用于指人或指物，可与of短语连用。none of短语中的none不能用no、no one、nothing、nobody来代替，只能用none。
none of用法1、None of that money on the table is mine.桌子上的钱都不是我的.
2、None of us are/is afraid of difficulties.我们当中没有一个害怕困难.
none和no one都是否定的,都只用在肯定句中,如：
None of them know me.他们都不认识我.
None of them don't know me.为错误,要说成：Each of them knows me。
none of双语例句1.We have three sons but none of them lives/ live nearby.
我们有三个儿子，但他们都不住在附近。
2.None of the tribes speak the same tongue.
这些部落所说的语言都不相同。
3.None of this would have been possible without their help.
如果没有他们的协助，这事没有一样能办成。
4.My private life is none of your business.
我的私生活与你无关。
5.He repeated none of the errors he'd made first time round.
他没有重复过首次所犯下的任何错误。
