none和nothing的区别是什么

none和nothing的区别： 1.none 1)可与of连用；2)谓语动词用单或复数；3)具体指什么人或物；4)一般用来回答how many +n,how much +n及含any+n引起的疑问句。请看： 1)None of us have/has seen him. 2)??How many students are there in the room? ??None. 3)??Is there any water in the thermos?