I don't know this. No news is good news.
There is no person /not a person/not any person in the house.
He went to his office, not to see him. I am sorry for not coming on time.
I don't think/believe/suppose/feel/imagine you are right.
I don't know all of them.
I can't see everybody/everything.
All the answers are not right.
None of my friends smoke. I can see nothing/nobody.
Nothing can be so simple as this. Neither of them is right.
You didn't see him, neither/nor did I.
We seldom/hardly/scarcely/barely hear such fine singing. I know little English. I saw few people.
7) 双重否定 ：双重否定相当于肯定
You can't make something out of nothing.
What's done cannot be undone.
No gain without pains.
No man is so old but (that) he can learn.
Everyone is ready except you. He did nothing but play.
But for your help, I couldn't do it.
I won't do it at all.