both of them ; either of them; none of them; neither of them

both of them ; either of them; none of them; neither of them either of them and neither of them None of them,Either of them ,Neither of them 的区别 either of them和both of them的区别 none of them all of them,none of them... Neither of them like either of them 和 each of them both of them翻译 all neither both none后面是不是都要加个of?比如说none of them both them还是both of them?为什么? 请问none of them等于_____of them?