6.英语的全部否定与部分否定分别是怎么样的原发布者:freezebra
关于部分否定和全部否定1.not all+名词,all 。not,not 。all表示部分否定2.no+名词表示全部否定Not all birds can fly.讲解:本句=All birds can not fly=Some birds can't fly=不是所有的鸟都会飞那么所有的鸟都不会飞如何表达?No birds can fly.=Birds can't fly.----全部否定大家清楚了吗?当然我上面犯了个错误,同学门看出来了吗?呵呵,鸟怎么能不会飞呢?是bird就会飞.那什么鸟不会飞呢?ostrich[鸵鸟],这个单词难记吗?我来教你记住它.先从后往前拆了它,rich+st+o,然后把rich联想成富人,st想成street,o想成一个项圈,最后开始造句,只有有钱人才会在大街上溜鸵鸟.记住了吗?呵呵,鸵鸟肉很好吃,无奈本人不rich.好了,扯远了,给大家几个句子体会一下部分否定.例句:1.Not all men can swim.=All men can not swim.2.Not all Chinese people like beef.=All Chinese people don't like beef.3.I don't kown all of them,言外之意,I only know some of them,not all.特别说明:前两个句子等号右边的部分同学们很容易理解成全部否定,其实不然.但这里我要说明的是,这样的表达在现代英语里并不常见,所以在写作中大家最好用等号左边的表达.全部否定比较简单,我再举一个No men can fly.[这个不是病句,是真理,没人反对吧,本人水平有限,太难的句子怕写错了]中学英语教材中,英语的否定句是一个语法的重点,同时又是一个难点 。在教学中发现
7.英语的否定句怎么写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. 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” 。
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