4)全体否定

　　None of my friends smoke. I can see nothing/nobody. Nothing can be so simple as this. Neither of them is right。

　　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。