英语否定句

如题所述

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”。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.
温馨提示:答案为网友推荐,仅供参考
第1个回答  2019-11-13
第2个回答  2020-02-26
是否定句.NEVER这词在句中是否定词否定句.
否定句的结构是:S(主语)+否定句+其他
第3个回答  2020-03-28
应该是否定句吧,它虽然要表达“我一直都是赢的”,但是“我从来没输过”在前面,句型随前面

相关了解……

你可能感兴趣的内容

本站内容来自于网友发表,不代表本站立场,仅表示其个人看法,不对其真实性、正确性、有效性作任何的担保
相关事宜请发邮件给我们
© 非常风气网