篇一 :need的用法

Need(需要) 的用法

1.Need作为实义动词

有人称、数和时态的变化(在变为否定句和疑问句时需借助于助动词)

(1)当主语是人时,后可接名词和动词不定式,

即:need sth./ need to do sth.

Eg: He needs some help.

It's cold outside. You need to wear more clothes.

Need后跟不定式且用于否定句中时,表示“不必”,指没义务或没必要做某事。

Eg: You don't need to do it at once.你不必马上做那件事情。

(2)当主语为物时,后接名词或v-ing.

Eg: The flowers need water. 这些花需要水。

The flowers need watering.这些花需要浇水。

2.need作为情态动词

(注:情态动词不能独立作谓语,必须和动词原形一起构成谓语,即need作为情态动词时,后面必须跟动词原形)

无人称、数和时态的变化,常用于否定句和疑问句中。 Eg: You needn't go this week.这周你不必去。

由need引导的一般疑问句,肯定回答一般用must, 否定回答一般用needn't。 Eg: -------Need I come?

-------Yes, you must./ No, you needn't

注:由must引导的一般疑问句,肯定回答一般用must, 否定回答一般用needn't或 don't have to Eg: --------- Must I go now?

-------- Yes, you must.

No, you needn't/don't have to.

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篇二 :Need的用法

Need的用法

need +to do中的need是行为动词,否定句和疑问句都要加助动词do/does/did

need +do中的need是情态动词,否定句在need 后加not,疑问句need 移到句首就可以了.

“need”双重角色的用法及其区别

“need”既可以作情态动词,也可以作实义动词,但是它们的用法不同。

作为情态动词的“need”的用法与其他情态动词“can”,“may”,“must”的用法基本相同:在限定动词词组中总是位居第一,没有非限定形式,即没有不定式、-ing分词或-ed分词等形式;第三人称单数现在时没有词形变化;情态动词之间是相互排斥的,即在一个限定动词词组中只能有一个情态动词。下面是“need”作为情态动词的用法:

一、need表示“需要”或“必须”,通常用于否定句和疑问句。例如:

1.You needn't do it again.你不需要再做了。

2.He needn't worry about it.这件事他无需担心。

3.Need he do this homework first?他需要先做这些作业吗?

4.Need they fill in the form?他们需要填表吗?

二、在否定句中,可以用need的否定形式+不定式完成体。例如:

1.We needn't have worried.其实我们不必要慌。

2.You needn't have mentioned it.你本来不必提起这件事。

3.You needn't have said that when he asked.当他问的时候,你其实不必要说。

三、needn't后的不定式间或也能用进行式或被动语态。例如:

1.He needn't be standing in the rain.他不必要站在雨中。

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篇三 :情态动词need的用法汇总

need”双重角色的用法及其区别

“need”既可以作情态动词,也可以作实义动词,但是它们的用法不同。

作为情态动词的“need”的用法与其他情态动词“can”,“may”,“must”的用法基本相同:在限定动词词组中总是位居第一,没有非限定形式,即没有不定式、-ing分词或-ed分词等形式;第三人称单数现在时没有词形变化;情态动词之间是相互排斥的,即在一个限定动词词组中只能有一个情态动词。下面是“need”作为情态动词的用法:

一、need表示“需要”或“必须”,通常用于否定句和疑问句。例如:

1.You needn't do it again.你不需要再做了。

2.He needn't worry about it.这件事他无需担心。

3.Need he do this homework first?他需要先做这些作业吗?

4.Need they fill in the form?他们需要填表吗?

二、在否定句中,可以用need的否定形式+不定式完成体。例如:

1.We needn't have worried.其实我们不必要慌。

2.You needn't have mentioned it.你本来不必提起这件事。

3.You needn't have said that when he asked.当他问的时候,你其实不必要说。

三、needn't后的不定式间或也能用进行式或被动语态。例如:

1.He needn't be standing in the rain.他不必要站在雨中。

2.We needn't be waiting in this place.我们不必要在这儿等。

3.The hedges needn't be trimmed thisweek.本周树蓠不必要整修。

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篇四 :Need的用法

Need的用法,包括need的动词名词及there is no need to do的用法

关键词:need的用法,need sb to do,need doing

来源:上海外教网 | 发布日期:2008-01-05 00:44

一、need作情态动词的用法:

need用作情态动词时表“必须必要”的意思,后直接跟动词原型,且need无人称、数的变化(第三人称单数不加s),也没有非谓语形式(不定式、分词)。

注意:

need用作情态动词时常用于否定句和疑问句中。

例:Need he bring his laptop tomorrow? 明天他必须带他的笔记本过来吗?

Come on, you needn't worry about it becuse it's not your fault. 行啦,你不必担心的因为那不是你的错。

She needn't have arrived so early, need she? 她本不必到得这么早,不是吗?

注意:

must引导的一般疑问句的否定回答必须使用needn't。例如:

-Must I leave? 我必须离开吗?

-No, you needn't. 不,你不必离开。

二、need作实意动词的用法:

1、need + something 需要某物

例:I need some fruits to eat. 我需要些水果来吃。

2、need to do something 需要做某事

例:You don't need to have the bike repaired right away. 你不必马上去修车。

3、need doing = need to be done 需要??

例:The room needs cleaning = The room needs to be cleaned. 房间需要打扫了。

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篇五 :情态动词need用法小结

一、NEED与句子类型

(本条可参照ANY的用法。)

NEED可用于:

1.否定句/含有否定意义的句子

1)否定句

含not/hardly/never/nobody等词语。

I needn’t say anything.

He need hardly advise me.

You never need tell me this or that.

Nobody need help me.

I don’t think he need come.(否定转移)

注:NEEDN’T的意思其实有三种,即不必要/不一定/不应该,视具体语境而定。

2)含有否定意义的句子

含only/but/all/before/than等词语。

He need only wait here.

You need but consider the matter to understand its importance.

That’s all that need be said.

Do not stay longer than you need.

There was another hour before I need go out into the cold.

2.疑问句/表示疑问的从句

1)疑问句(包括否定疑问句)

Need he say it again?

2)表示疑问的从句

I wonder whether/if I need see her.

3.条件句

含if/unless等词。

If he need come, he will.

本条要点简单概括起来就是,NEED不能用于肯定句。以下的各种用法也遵循这条规则。

二、NEED与时态

1.现在时

NEED常用于现在时。

You needn’t stay.

2.将来时

You needn’t have your blood pressure taken tomorrow.

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篇六 :Need用法的专项测试题(附答案)

Need的用法专项测试题:

( )1. Grandpa_________ to water the flowers now . It’s going to rain soon .

A isn’t needing B needn’t C doesn’t need D needs

( ) 2. Tom will help you finish the work on time , so you _________ worry about it .

A don’t need B needn’t C not need D needn’t to

( )3. John , you _________ do your homework today , Leave it for tomorrow .

A needn’t to B don’t need C don’t need to D haven’t to

( )4. Since you are very tired , you ___________ finish the work today .

A don’t need B need to C not need D needn’t

( )5. We will help you to finish the cleaning on time , so you _________ worry about it .

A needn’t to B don’t need C not need D needn’t

( )6. Parents __________ pay for the nine years’ education in China .

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篇七 :情态动词need的用法(高中)

情态动词need的用法

一、need作情态动词的用法:

need用作情态动词,后接动词原形,且need无人称、数的变化(第三人称单数不加s),否定形式为needn’t。need用作情态动词时常用于否定句和疑问句中。如:

Need he bring his laptop tomorrow? 明天他必须带他的笔记本过来吗?

You needn't worry about it because it's not your fault. 你不必担心,因为那不是你的错。 She needn't arrive so early, need she? 她本不必到得这么早,不是吗?

注意:must引导的一般疑问句的否定回答必须使用needn't。如:

-- Must I leave? 我必须离开吗?

-- No, you needn't. 不,你不必离开。

二、need作实义动词的用法:

need用作实义动词时,有人称、数和时态的变化。构成疑问句和否定句要借助do/does/did。

1. need + sth. 需要某物

e.g. She needs some fruits to eat. 她需要些水果来吃。

2. need to do sth. 需要做某事

e.g. You don't need to have the bike repaired right away. 你不必马上去修车。

3. need sb. to do sth 需要某人做某事

e.g. I need someone to help me out of this problem. 我需要找人来帮助我解决这个问题。

4. need doing = need to be done 需要……(用主动形式表被动)

e.g. The room needs cleaning = The room needs to be cleaned. 房间需要打扫了。

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篇八 :need的用法

Need的用法

1. need 是英语中两个比较特殊的动词之一(另一个是dare),既是及物动词又是情态动词。作情态动词用多见于英国英语中,而且仅用在否定句和疑问句中。如:

need的用法

2. need 作情态助动词通常不用在肯定句中(*He need go now.), 但在表示怀疑或否定概念的主句之后的宾语分句里或主语分句里,可以用情态助动词的肯定形式。如:

I don’t think you/ he need go just yet.

I wonder if we need take sleeping-bags.

The only thing you need to do is (to) fill in this form.

(=You don’t need to do anything else。)

All you need do is to take a taxi from the airport.

情态动词need的肯定式主要用在正式文体中。在非正式文体中,need作及物动词用也许更普遍。如:

I wonder if we need to take sleeping-bags.

I don’t think he needs to go just yet.

The only thing you need to do is (to) fill in this form.

3. need 没有过去、现在的时态区别。如果要表示过去时间可用“need have + -ed分词”的结构。如:

Need you have told him about my plans?

You needn’t have told him about my plan.

据CGoEL, You need not have done it. 几乎等于You did not need to do it. 但是,need have+-ed 分词结构隐含有与事实相反的意思,need to 的结构则没有。如下一句中,我们就不能用need not have said 来代替 did not need to say:

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