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enough的用法

enough的用法

  1.用作名词,表示“足够(的数目或数量),没有复数形式,但根据情况可表示复数意义.如:

  Enough has been said of this problem.有关这个问题,已经谈得够多了.

  Enough were present to constitute a quorum.出席的人数够法定人数.

  2.用作形容词,通常修饰复数名词或不可数名词,可放在被修饰名词之前或之后(但以前置为多见).如:

  He has enough money to buy a car.他有足够的钱买辆汽车.

  We have time enough to get to the airport.我们来得及赶到机场.

  有时与某些具有形容词意味的名词连用,此时 enough 必须后置,且该名词通常不用冠词.如:

  I was fool [=foolish] enough to accept his offer.我接受他的提议真是太傻了.

  3.用作副词,可用来修饰形容词、副词、动词等,此时总是放在被修饰语之后.如:

  You don’t relax enough.你休息不足.

  I wonder if it’s large enough.我不知道它是否够大.

  You’re not driving fast enough.你开车开得不够快.

  修饰形容词时要后置,即使被修饰的形容词后面修饰有名词也是如此.如:

  We haven’t got a big enough house.我们的房子不够大.

  He was a handsome enough child.他是一个非常帅气的孩子.

  但是,如果enough修饰整个名词词组,则置于形容词之前.比较:

  We haven’t got big enough nails.我们没有够大的钉子.

  We haven’t got enough big nails.我们没有足够多的大钉子.

  4.可用于某些副词之后对一情景进行评论.可以这样使用的词有curiously,funnily,interestingly,oddly,strangely,surprisingly等.如:

  Strangely enough,I won first prize.说来奇怪,我得了一等奖.

  Curiously enough,he seemed to know that already.说也奇怪,他似乎已经知道这事了.

  Interestingly enough,this proportion has not increased.说也有趣,这个比例并未增加.

  Oddly enough,we didn’t meet,although we were both there.真怪,我们没有碰面,虽然我们都在那里.

  5.在通常情况下,enough不能用作表语,除非其主语是代词或是那些具有(或暗示有)数量意义的名词.如:

  One such dictionary is enough.这样的词典一本就够了.

  Five men will be quite enough.5个人完全够了.

  I did all I could,but it wasn’t enough.我做了我能做的一切,但是还不够.

  比较下面的正误句子:

  误:The beer isn’t enough.啤酒不够.

  正:There isn’t enough beer.啤酒不够.

  误:Was the time enough?时间够吗?

  正:Did you have enough time?你们时间够吗?

  6.用于cannot...enough,表示“无论怎样……都不够”.如:

  I cannot thank you enough.

  You cannot be careful enough.你越仔细越好.

  I cannot say enough in praise of his work.我对他的工作赞扬不已,怎么说也不嫌过分.

need用法小结

  need用法小结

  海南省北京师范大学万宁附属中学 于洪伟

  need既可以用作情态动词、实义动词,还可以用作名词。need词义简单,用法却不简单。

  一、用作情态动词

  表示必要,后接动词原形,即:need + do

  1.通常用在疑问句、否定句中。

  疑问式:Need +主语+ do…?

  否定式:needn’t + do

  Need you go yet? 你一定要去吗?

  No, I needn’t. 不一定要去。

  You needn’t clean the house now. 你不必现在打扫房子。

  2. need引导的疑问句,肯定回答要用must。

  —Need I call him up now? 我需要现在给他打电话吗?

  —Yes, you must.是的,需要打。

  —No, you needn’t.不,不需要现在打。

  3. need have done的否定式或疑问式,表示“ 做了不必做的事” 。

  needn’t have done sth 本不必做某事(事实上却做了)

  Need +主语+ have done sth? 当时非得做某事吗?

  You needn’t have told him because I had already told him about it . 你本没必要告诉他,因为我已经告诉他这件事了。

  Need you have sold the house? 你那时非得把房子卖掉吗?

  二、用作实义动词

  表示需要(require, want, lack)或义务。

  1.可用于 肯定句 、 疑问句 和 否定句。

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