句型宝典否定句型1

I am not

结构︰主词+be 动词(am/are/is)+not+。

说明︰在肯定句中 be 动词的后面加 not 就构成否定句.

I am not a student. 我不是学生。

You are not a lawyer. 你不是律师。

It is not a watch. 它不是手表。

I am not + V-ing.

结构︰主词+am(are/is)+not+现在分词。

说明︰此句型意为主词(人，物)不是正在。要构成现在进行式否定句，只需在 be 动词后面加 not.

They are not playing. 他们不是正在玩。

She is not watching TV. 她不是正在看电视。

We are not cleaning the room. 我们不是正在打扫房间。

I dont + V

结构︰主词+dont/doesnt+原形动词+。

说明︰此句型意为主词不(没有)做某事。肯定句中，如有一般动词(speak/work/teach/)，则在一般动词前加 dont 或 doesnt，并将一般动词改为原形动词(不加s或es)，即构成否定句.

I dont have any brothers. 我没有任何的兄弟。

He doesnt know Mr. Brown. 他不认识布朗先生。

My mother doesnt speak English. 我母亲不会讲英语。

I wasnt

结构︰主词+was/were+not+形容词+过去时间。

说明︰此句型意为主词不是。was，were 是 be 动词的过去式，当句中出现以下副词词组)时，动词常用过去式：ago，before，yesterday(morning，afternoon，evening)， last night，the other day，in the past，just now。 在 was，were 后面加 not，即构成 be 动词过去式的否定句将 was，were 移到句首，w 改为大写，句点改为问号，即构成 be 动词过去式的疑问句.

Tom was not busy yesterday. 汤姆昨天不忙。

We were not at home yesterday. 我们昨天不在家。

It was not hot yesterday afternoon. 昨天下午天气不热。

The boys were sick yesterday. 这些男孩昨天生病。

It was cold last winter. 去年冬天天气寒冷。

Was your brother early to class yesterday morning? 你弟弟昨天早晨上课早到吗?

I didnt + V

结构︰主词+didnt+原形动词+过去时间。

说明︰本句型的肯定形式是：主词+过去式(+ed)+过去时间将肯定句中的过去式改为did not(=didnt)+原形动词，即构成过去式的否定句.

He didnt clean the room yesterday. 他昨天没打扫房间。

She washed the skirt yesterday. 她昨天洗这裙子。

Tom didnt watch TV last night. 汤姆昨晚没看电视。

He talked to his sister after lunch. 午餐后，他跟他的妹妹谈话。

They didnt cook lunch for their grandfather yesterday.他们昨天没有为他们的祖父做午饭。

Mary cleaned the room this morning. 玛丽今天早晨打扫了房间。

John didnt get up early this morning. 约翰今天早晨没有早起床。

Tom didnt iron his shirt yesterday. 汤姆昨天没有熨衬衣。

My mother didnt water the garden last week. 我母亲上星期没有给花园里浇水。

I have not + V-ed

结构︰主词+have/has+not+过去分词+。

说明︰在助动词 have(has)的后面加not形成现在完成式的否定式。

I have not heard from John for a long time. 我好久没有收到约翰的来信了。

She has not read todays newspaper. 她还没有看今天的报纸。

They have not seen that movie on television. 他们还没看过电视上的那部影片。

There is no + N/V-ing

结构︰There+be+no/not a/not any+名词/动名词(+副词)

说明︰这是表示存在的否定句型。否定词用 no，也可用 not a 或 not any.not a 后面跟单数名词not any 跟复数名词no 后面的名词单复数都可以。其中以 not a 所表示的否定语气较强。如果带有各种副词，通常是地点副词置于时间副词的前面。

There was nothing to buy in the store. There were no shirts， no vests， no jeans， and no pajamas. 那家商店里没什么可买的。那里没有衬衫，没有背心，没有牛仔裤，也没有睡衣。

There was not a moment to be lost. 分秒必争。

There is no denying the fact. 事实决不能否认。

(There must be) No talking in here! 这儿不许讲话。

No smoking (within these walls)! (场内)禁烟!