2. 祈使句的否定句：Don’t+動詞原形…。

　　例句：

　　Don’t worry. I’ll look after you.

　　Don’t believe a word he says.

　　Don’t be so rude.

　　3. 非謂語動詞(不定式，分詞，動名詞)的否定式：把not放在to do; doing; 的前面。

　　It’s important not to worry.

　　He said he deeply regretted not being able to help.

　　Not knowing what to do, Shelly asked advice of her friend.

　　He reproached me for not having told it to him.

　　4. not與除謂語以外的其他句子成分連用：

　　Come early, but not before six.

　　It’s working, but not properly.

　　I believe he will succeed, though not without some difficulty.

　　not用在I hope; I believe; I’m afraid; I guess; I suppose; I expect之后，構(gòu)成省略句。

　　—Will it snow today ?

　　—I hope not.

　　5. 用no構(gòu)成否定句：no+名詞(單，復(fù)數(shù)，不可數(shù))相當(dāng)于not+ a +名詞/ not + any +名詞

　　No machine would work for long if it were not properly lubricated.

　　The nations of Europe and America have found that no country can produce all its needs without trading.

　　Take that towel, I have no other.

　　I can walk no farther.

　　There is no knowing what will happen.

　　6. 某些否定副詞或代詞：seldom; never; hardly; rarely; little; few; none; nowhere; neither等在句中構(gòu)成否定句：

　　I can seldom find time for reading.

　　Mirror tells only the facts, never the poetry.

　　The rumor came from nowhere.

　　None but fools have ever believed it.

　　7. 否定轉(zhuǎn)移：當(dāng)think; believe; suppose; imagine等動詞引導(dǎo)否定意義的賓語從句時，把從句中的not提到主句這些動詞前面，是主句變成否定句：

　　I don’t think she’s at home, but I’ll go and see.

　　I don’t imagine that he’ll enjoy it.

　　8. 否定式疑問句：

　　Doesn’t she understand ?

　　Haven’t you booked your holiday yet ?

　　部分否定：

　　注意部分否定的結(jié)構(gòu)：

　　Not all…=All…not…

　　Not both…=Both…not…

　　Not every…=Every…not…

　　I don’t remember all the names.

　　All is not gold that glitters.

　　It is not found everywhere.

　　Not everyone likes this film.

　　9. 用否定形式表示肯定的意義：

　　注意這些句型：

　　cannot…too.. / cannot… more: 越…就越好;再…不過了。

　　You cannot be too careful.

　　A man can never have too many friends.