知识点1:否定式的常见缩写形式
系动词be、助动词、情态动词的否定形式一般可以缩写成为一种简略的形式。如：[1]情态动词,助动词,相关知识点

用作情态动词和助动词的willThat will be the postman at the door now! 现在门口准是邮递员来了!4. 表示命令，意为“要”“得”。如：You will carry out these instructions and report back this afternoon. 你要执行这些指示并于今日下午报告执行情况。5. 表示习惯或倾向性

is not—isn't are not—aren't
was not—wasn't were not—weren't
has not—hasn't have not—haven't
will not—won't would not—wouldn't[2]would单词记忆法

◆记忆方法一：联想方式：单词比较：would-world 世界r 将要u ru:入记忆方法：进入世界将要面对竞争。

shall not—shan't should not—shouldn't
do not—don't did not—didn't
ought not—oughtn't dare not—daren't
used not to—usedn't / didn't use to

知识点2:动词不定式的否定式[3]不定式,动词,相关知识点

这个could 后该接不定式还是动词原形(5) He spent every minute he could _________ spoken English.A. practise B. to practise C. practising D. practised【分析】此题应选 C，它与以上各题的情形均有所不同，虽然与上面的第(4)题的答案一样，均为动词的 –ing 形式，

4) The boy wanted to ride his bicycle in the street，but his mother told him ____.
A. not to　　B. not to do　　C. not do it　 D. do not to
答案：A。not to 为not to do it 的省略形式。可以只用to这个词，而不必重复整个不定式词组。及物动词do后应有名词、代词等，否则不对，因此B，D不对。[4]名词,动词,相关知识点

dislike 用作名词与用作动词的搭配异同She very much dislikes fish. 她很不喜欢吃鱼。It seems that John dislikes his boss. 约翰似乎不喜欢他的老板。若表示不喜欢做某事，动词dislike后接动名词作宾语，不接不定式（这与其反义词 like 不同）。如：He disliked working late. 他不喜

5) The patient was warned ___ oily food after the operation.[5]operation单词记忆法

◆记忆方法一：谐音：阿婆入神 阿婆入神处理业务。◆记忆方法二：词根词缀记忆法：operation n 操作；手术(operate+ion）,Oper=work ,表示“工作”

A. to eat no　 B. eating not　 C. not to eat　D. not eating
答案：C。warn一词要求后用不定式，此处为不定式的被动，否定形式为be warned not to do。

知识点3:现在分词的否定式的构成与用法[6]现在分词,用法,相关知识点

“have+宾语+现在分词”的六种用法I’ll have you speaking English in six months. 我要你六个月内就开口讲英语。用法四：表示容忍或允许某人做某事（用于否定句，尤与 won’t, can’t连用）。如：He won’t have boys arriving late. 他不允许孩子们迟到。I won’t have you smokin

英语现在分词否定式的构成方法是在现在分词前加否定词 not。
一、现在分词一般式的否定式
现在分词一般式的否定式为 not doing / never doing。如：
I sat at the back, never daring to speak. 我坐在后面，从不敢吭声。
Not liking mathematics, she gave it up. 她不喜欢数学，所以不学了。
Not being able to understand English, he didn't know what they wanted. 由于他不懂英语，他不知道他们要什么。[7]what,know,相关知识点

要学会疑问词加不定式的用法，特别要注意的是what是疑问代词，而how是疑问副词。如：I want to know what to do. (我想知道干什么)。 I want to know how to do it. (我想知道如何去作)。 要注意的是how to do it 中的it是不可少的，因how是疑问副词，不能作及物动词的宾语，而what是疑问代词，可做do的宾语，