none of 的用法
none用于指人或指物，可與of短語連用，用作單數或復數，總是用在一定范圍之內。
none of短語中的none不能用no, no one, nothing , nobody來代替，只能用none。
none of
(三個或以上)都不
1、None of us knew how to treat her.
我們沒有人知道該如何對待她。
2、It has nothing to do with me.; It's none of my business.
這事與我無干。
3、There have been a number of explanations, but none of them stack up.
已經提出了好幾種解釋，但沒有一種能站得住腳。
4、None of us can run as fast as he can.
我們之中沒有誰能跑得過他。