No 是形容词 “不许的, 不可能的”后面一般接名词或者v-ing 形式。
如No smoking!不许吸烟！
That is no way to treat another human being.
那绝不是对待他人的方式。
I have no problem with you working at home tomorrow.
你明天在家里工作，我没有意见。
No one was at home.
没有人在家。
