nothing
1)指物；2)谓语用单数；3)一般用来回答含anything的一般问句及what引起的特殊问句.请看：
1)——What is in the box? ——Nothing.
2)——Is there anything in the sky? ——Nothing.
3)——Can you see anything without glasses? ——Nothing.
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? ——None.
4)——How much money do you have on you? ——None.
no one
1)不与of连用；2)谓语动词用单数；3)只能指人,但不具体指什么人；4)一般用来回答who,及含
anyone,anybody引起的疑问句.如：
1)No one like a person with bad manners.
2)——Who is in the room?
——No one.
3)——Is there anyone in the room?
——No one.
下面的顺中溜将帮你记得更清楚.
No one与none好分辨./具体人,物把none填.
不知何人与何物,/No one nothing是一路.
No one人nothing物,/保你不会出错误.