none pron. 没有人（东西），……中任何一个都不 adv．一点也不
none of one's business 与某人无关（别多管闲事）（one shouldn't be too nosy/interfere with）
对话：
A: I think Jack should have invited Jessica to the party.
A：我认为杰克本来应该邀谓杰茜卡参加聚会。
B: It's none of your business.
B：这与你无关。
none to speak of 没什么值得提的，没什么值得说的
对话：
A: So I guess it's been a year now since your last checkup. Have you had any health problems?
A：我想你自从上次体检已经有一年了。有没有什么健康问题？
B: None to speak of.
B：谈不上。
