5) 延续否定

You didn‘t see him, neither/nor did I.

You don‘t know, I don‘t know either.

He doesn‘t know English, let alone/to say nothing of/not to speak of French.

6) 半否定句

We seldom/hardly/scarcely/barely hear such fine singing.

I know little English.

I saw few people.

7) 双重否定

You can‘t make something out of nothing.

What‘s done cannot be undone.

There is no sweet without sweat.

No gain without pains.

I can‘t help /keep/ laughing whenever I hear it.

No man is so old but (that) he can learn.

8)排除否定

Everyone is ready except you.

He did nothing but play.

But for your help, I couldn‘t do it.

9)加强否定

I won‘t do it at all.

I can‘t see it any more.

He is no longer a boy