do型的肯定句变否定句口诀和否定句

小学英语肯定句、否定句、一般疑问句和特殊疑问句的详解_百度文库
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你可能喜欢英语的否定句怎么写_百度知道
英语的否定句怎么写
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简单句中含有系动词be、情态动词和助动词时,变否定句时需在系动词be、情态动词和助动词后加not。如: I am a teacher.→I am not a teacher.
He can help me.→He can't help me.
2.简单句中谓语动词为行为动词时,要根据时态选用do的相应形式,把肯定句变为否定句。如:
The little girl wants to go there.→The little girl doesn't want to go there.
He did his work yesterday.→ He didn't do his work yesterday.
3.祈使句变否定句时,一般在句首加Don't,但Let us或Let's开头的祈使句在 Let us或 Let's后加not即可。如:
Put them over there.→Don't put them over there.
Let us go home.→Let us not go home.
4.主从复合句中,主句是I think,I believe等结构,变否定句时,形式上否定主句,实际上否定从句。如:
I don't think chickens can swim .我认为鸡不会游泳。
5.“had better +动词原形”,变否定句时为“had better not +动词原形”。如:
You'd better go to school.→ You'd better not go to school.
6.动词不定式变否定式时,常在不定式to前加not。如:
The teacher tells me to do it.→ The teacher tells me not to do it.
7.使役动词和感官动词(make,let,hear,see,watch等)后接省略to的不定式,此种不定式变否定句时只需在省略to的动词原形前加not。如:
I saw her work.→I saw her not work.
8.特殊形式的否定句,有以下几种:
(1)肯定句含有every-的合成词时,变否定句时改为no-。如:
Everything is ready.→Nothing is ready.
(2)肯定句中含有always, usually和ever时,变否定句时改为never。如:
He is always late for school.→He is never late for school.
(3)肯定句含有many,much时,变否定句时分别改为few,little。如:
Many students know him.→Few students know him.
(4)肯定句中含有still时,变否定句时应改为no longer。如:
Tom is still in bed.→Tom is no longer in bed.
(5)肯定句含有both, both...and,all时,变否定句时应改为never,neither...nor,none。如:
Both of us are students.→Neither of us is a student.
(6)肯定句含有nearly, almost时,变否定句时应改为 hardly。如:
Lily nearly knows him .→Lily hardly knows him .
(7)肯定句含有“形容词+ enough”时,变为否定句时应改为“too +形容词的反义词”。如:
He is short enough to reachit.He is too tall to reach it.
(8)谓语动词是be,have(有)或谓语含有助动词、情态动词时,直接在这些词后加上否定词not。如:
She can swim.She can't swim.
(9)谓语动词是行为动词时,要在该动词前加上do /does /did not,该词恢复原形。如:
He gets up early.He doesn't get up early.
(10)既要否定谓语动词,又要变换句中的单词。如:
He can read and write.He can't read or write.
(11)用含否定意义的词或词组取代肯定句中的某些词或词组。如:
I know both English and Chi- nese.I know neither English nor Chinese.
类似的有:ever /alwaysnever, somebodynobody,somethingnothing, everybody no one,almost hardly
9.祈使句的肯定式变否定式
(1)一般在动词前加上 don't。如:
Open the window .Don't open the window.
(2)含有“Let's...”的祈使句,一般用“Let'snot...”的形式,美国人偶尔也用“Don'tlet's...”这一形式。加强语气时使用“Let'sdon't...”这一形式。如:
Let's go there.Let's not go there.
10.复合句的肯定式变否定式
一般将主句变为否定式。如:I saw her when I left .I didn't see her when I left.
采纳率:82%
来自团队:
have not(haven't)。。、none等英语否定句最关键的是加否定词not、scarcely/barely hear such fine singing.I know little English. I saw few people.(7)双重否定You can&#39。否定句可分为(1)一般否定句I don&#39.I am sorry fot make somenobody.(5)延续否定You didn't see him, neither&#47。”之意.I can&#39.You don&#39。如are not(aren&#39: not 一般用于be动词;nor did I;t),is not(isn&#39.What's done cannot be undone.(8)排除否定(9)加强否定I won't do it at all、助动词do.no:一般用于名词之前;feel/imagine you are right.(3)部分否定All the answers are not rightAll is not gold that glitters(4)全体否定None of my friends smoke.(6)半否定句We seldom/hardly/believe/suppose&#47.I don&#39、have等后面;t),do not (don't), not to see him. Nonews is good news.(2)特指否定He went to his office,表达“没有;t know, I don't think&#47.I can see nothing&#47。not
比如 肯定句是It is a dog.否定就是It is not a dog.
就是在动词后面加not
具体说就是1. 简单句中含有系动词be、情态动词和助动词时,变否定句时需在系动词be、情态动词和助动词后加not。如: I am a teacher.→I am not a teacher.He can help me.→He can't help me.2.简单句中谓语动词为行为动词时,要根据时态选用do的相应形式,把肯定句变为否定句。如:The little girl wants to go there.→The little girl doesn't want to go there.He did his work yesterday.→ He didn't do his work yesterday.3.祈使句变否定句时,一般在句首加Don't,但Let us或Let's开头的祈使句在 Let us或 Let's后加not即可。如:Put them over there.→Don't put them over there.Let us go home.→Let us not go home.4.主从复合句中,主句是I think,I believe等结构,变否定句时,形式上否定主句,实际上否定从句。如:I don't think chickens can swim .我认为鸡不会游泳。5.“had better +动词原形”,变否定句时为“had better not +动词原形”。如:You'd better go to school.→ You'd better not go to school.6.动词不定式变否定式时,常在不定式to前加not。如:The teacher tells me to do it.→ The teacher tells me not to do it.7.使役动词和感官动词(make,let,hear,see,watch等)后接省略to的不定式,此种不定式变否定句时只需在省略to的动词原形前加not。如:I saw her work.→I saw her not work.
这个有点复杂,掌握前面3点就行了
be动词后加not 动词后加don't/doesn'tsome改any
这里初三,不懂的随便问。
否定句找出情态动词或,be动词,调到句首加上not。
be动词或情态动词或助动词后面直接加not
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肯定句变否定句
由添加not来完成的否定句
谓语动词由行为动词及其词组构成且不含有任何助动词的陈述句,应在行为动词或词组前加do(does、did)not 来构成否定句。
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& 英语辅导报小学四年级版:祈使句的自我展示
英语辅导报小学四年级版:祈使句的自我展示
http://www.sina.com.cn
15:50& 英语辅导报
  Hello, children. 我是祈使句,是表示请求、建议、劝告、命令、禁止的句子。我的特点是:以动词原形开头,主语you通常省略。我的句型结构有两种:肯定句和否定句。
  首先,向大家展示我的肯定句式:
  1. Do型 这是我经常出现的面孔,我以行为动词原形开头,表示请求、命令等。如:
  Open the door, please. 请打开门。(表示请求)
  Listen to me!听我讲!(表示命令)
  2. Let型 我以Let(或Let's)开头,可以表示建议或请求。如:
  Let's go to school. 我们上学去吧。(表示建议)
  Let us watch TV. 让我们看电视吧。(表示请求)
  3. Be型 我以“Be动词+形容词”的形式登场,表示请求,建议或提醒对方。如:
  Be quiet, please. 请安静。(表示请求、建议)
  Be careful!小心!(提醒对方)
  4. No型 我以“No+名词(或V-ing)!”的形式展示自己,表示“禁止”,是一种警示语,在公共场所你们一定能见到我。请看:
  No photos!禁止拍照!
  No smoking!禁止吸烟!
  下面向大家展示我的否定句式:
  我的否定句由“Don't+动词原形……”构成,常用来表示“劝告、建议”。如:
  Don't read in bed. 不要躺在床上看书。(表示劝告)
  Don't be late for school!不要上学迟到。(表示建议)
  小朋友们,听了我的自述后,你们一定认识我了吧。请你们在今后的日常生活和学习中,要根据不同的情景,选用我的适当句型啊!See you!
  (文/杨树霞;英语辅导报小学四年级版04~05学年第22期;版权归英语辅导报社所有,独家网络合作伙伴新浪教育,未经许可,不得以任何形式进行转载。)
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