语法是考研英语的基础，这部分在研究生英语考试中不再单独考查，但是语法知识贯穿在整个英语考卷的各个题型中。那么英语语法该如何复习呢?下面为大家带来了关于2021考研英语语法基础知识点讲解：9种否定，供大家复习参考。

　　9种否定

　　1) 一般否定句

　　I don‘t know this. No news is good news.

　　There is no person /not a person/not any person in the house.

　　2)特指否定

　　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.

　　3)部分否定

　　I don‘t know all of them.

　　I can‘t see everybody/everything.

　　All the answers are not right.(并非所有答案都对。)

　　All is not gold that glitters. (闪光的不一定都是金子。)

　　Both of them are not right.(并非两人都对。)

　　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.

　　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

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