英语句子的否定

英语句子的否定

（一）一般否定。

He does his lesson at seven every morning。

-------He don’t his lesson at seven every morning。

【注】这种句子的否定，要在助动词后面加“not”来否定。

（二）宾语从句的否定。

I believe he can do it。

-------- I don’t believe he can do it。

【注】宾语从句的否定，如有think、believe、suppose、expece。否定时，要否定主句，否则要否定从句。

（三）祈使句的否定。

1、Read。----------Do n′t read。

2、Yo u′d better do it。------- Yo u′d better not do it。

3、Le t′s sit here。------- Le t′s not sit here。

【注】祈使句的否定，要否定动词不定式to。

（四）代词的否定。

1、All of us are leaguemember。

----------None of us are leaguemember。

2、Each of us is reading text，

-----------No one of us is reading text，

3、Eneryone is here。

-----------No one is here。

4、I know all of them。

-----------I know none of them。（全否定）

-----------I don’t know all of them。

【注】代词的否定，主要有以下变化。

all-------none every-------no both-------neither

each------neither something------nothing

-------no one -------not anything

every one----------no one some--------no

----------no body ---------not any

（五）连词的否定。

1、He can read and write.

-------He ca n′t read or write.

2、I have brothers and sisters.

-------I have not brother or sister.

3、You have worked out the problem, so have I.

-------You haven’t worked out the problem, nor(neither)have

I.

4、He isn’t only clever but also diligent.

--------He is neither clever nor diligent.

5、I saw both the teacher and the studengts.

--------I saw neither the clever nor the students.

【注】连词的否定，主要有以下词发生变化。

1、not any=no.变这种句子时，and要变成no t…or…

2、so…句型。前半部分需要否定，后半部分的so要变成neither

或nor。

其余连词not…only…不但……而且……

both…and…既……又……

either…or…或者……或者……

都要相应地变成neither…nor…

（六）情态动词的否定。

1、You must go there.

------ You needn′t go there.

2、He must be in the room.

---------- He ca n′t be in the room..

【注】这种句子，要根据意思而定，有时也要变化。

------needn’t ------have n′t to

must have to

-------ca n′t -------do n′t have to

（七）副词的否定。

1、He always finishes his homework on time.---------------------

He never finishes his homework on time.

【注】副词要做以下的变化。

always-------never already-------no t……yet

now------ no t……yet still-----not……any more

often---seldem nearly----hardly

(八)too的否定。

把too变成not……either。

This is a pen, too.--------------

This isn′t a pen, either.

英语反义疑问句的变化

（一）一般式。

They agree with us.-----------------------

They agree with us. Don’t they?

He isn’t in the city.----------------------

He isn’t in the city. is he?

（二）情态动词。

You can go now.--------------------------

You can go now. ca n′t you?

They ought to go by bike.-------------------

They ought to go by bike. Shouldn’t they? （三）动词不定式。

You have to lisson to the talk.--------------

You have to lisson to the talk. d on’t you?

I had to explain it again.---------------------

I had to explain it again. d idn’t you?

（四）祈使句。

Le t′s go to see the film..----------------

Le t′s go to see the film.. shall we? （五）其它

H e′d made a model plan.--------------------

H e′d made a model plan. h adn’t he?

The y′d like to go.------------------------------------

The y′d like to go. w ouldn’t they?

H e′d better do it.---------------

H e′d better do it.. hadn’t he?