英语肯定句怎么写 _英语

1.英语的否定句和肯定句怎么写一.肯定句：是指用肯定的语气来陈述的句子。
例： This is my pen 。这是我的笔。
He works in a hospital 。他在医院工作。
There are four fans in our classroom 。我们教室里有四个风扇。
二.否定句：含有否定词或表示否定意义词的句子。例： This is not my pen 。
这不是我的笔。He does not (doesn't) work in a hospital 。
他不在医院工作。There are not (aren't) four fans in our classroom 。
我们教室没有四个风扇。三.肯定变否定，有以下2种情况 1.有am / is / are，就在它们后面加 not 。
am → am not is → is not are → are not 比如： I am a girl 。→ I am not a girl 。
我是女孩。→我不是女孩。
2.没有 am / is /are，但有表示动作的动词（比如eat），就在动词前加 don't 或 doesn't，动词为原形。V原→ don't + V原 V(-s, -es结尾) → doesn't + V原 eat → don't eat eats → doesn't eat 比如： I drink cola 。
→I don't drink cola 。我喝可乐。
→我不喝可乐。She drinks cola 。
【英语肯定句怎么写】→ She doesn't drink cola 。她喝可乐。
→她不喝可乐。扩展资料一.否定句主要是在肯定句的基础上加上了否定词 “not” 。
二.有动词be的句子则“not”加在be后面，可缩写成“isn't,aren't”，但am not 一般都分开写。三.没有动词be的句子则要先在主要动词的前面加上一个助动词（do,does,did），然后在它后面加上“not”，你也可以把它们缩写在一起如“don't , doesn't , didn't ）。
四.上面三个助动词要根据人称和时态来选择，其中“does”只用于一般现在时主语是第三人称单数的情况，而“did”只用于一般过去时，不论主语是什么人称和数，都用“did”。
2.“肯定句（英语）怎样写”一.肯定句变成否定句
如果句中有be动词is,am,are 或情态动词must,can等，在其后面直接加not,
she is your mother. she isn't your mother
2.如果没有be动词或情态动词，加don't,does't或did't
she likes playing football. she doesn't like playing football.
二.肯定句变成疑问句
变成一般疑问句
如果有be或情态动词动词就把他们提前，
she is your mother. Is she your mother?
2.如果没有就在前面加do的某种形式，第三人称用does，过去时用did
she likes playing football. Does she like playing football?
变成特殊疑问句，
要具体分析，看是对什么进行提问，简单来说，
1.对人提问用who, she is your sister.Who is your sister?
2.对事物用what, The book is on the desk. what it is on the desk?
3对时间用when, She will come back tomorrow. When she will come back?
4.对频率用how often等等 I play football everyday. How often does you play footall?
3.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 。