1.Both 两者都 eg:both of us 介词用of 2.either 两者中的一个(肯定) eg:either you or I 介词用or 3.neither 两者中的一个(否定) eg:neither you nor I 介词用nor 4.none 两者都不 eg:none of us 介词用of追答
both 两者都 Both of my parents are teachers. either 两者中任何一个 -Which do you like,coffee or tea?-- Either is ok. neither 两者都不 Neither of my parents understand English. none 三者以上都不 None of us like English.