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小学四年级英语

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  • 单选题
    This           a donut.

    [     ]


    A. not is
    B. is not
    C. are not
    本题信息:2009年北京同步题英语单选题难度一般 来源:曾庆艳
  • 本题答案
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本试题 “This a donut.[ ]A. not isB. is notC. are not” 主要考查您对

系动词

否定句

等考点的理解。关于这些考点您可以点击下面的选项卡查看详细档案。
  • 系动词
  • 否定句
系动词:
亦称连系动词,作为系动词,它本身有词义,但不能单独用作谓语,后边必须跟表语,亦称补语(形容词),构成系表结构说明主语的状况、性质、特征等情况。
be(是)是最基本的系动词。小学涉及到的系动词需要掌握的am, is, are 
如:I am from Beijing. 我来自北京。 
My mother is a teacher. 我的妈妈是一位老师。 
除了系动词be,常用的系动词还有look(看起来)、sound(听起来)、feel(感觉到)、become(变成)、smell(闻起来)等。
例:The boy looks very happy. 这个男孩看起来很高兴。 
        The dish smells good. 这盘菜闻起来很香。

be动词意思和用法:
一般的意思是:
是,此种用法,有多种变化形式,
isamarewaswerebeingbeento be.
另外,be动词还有成为的意思。
根据句子中不同的人称、数和时态,应该选择相应的
be动词。

要看句语的时态:

如果是一般过去时,就用was/were

如果是一般现在时,就用am/is/are

如果是一般将来时,就用will be

然后看主语的人称及复数形式:

一般过去时:

第一人称和第三人称的单数形式,则用was

第一人称和第二人称、第三人称的复数,则用were

一般现在时:

第一人称单数形式,用am

第三人称单数形式,用is

第一人称复数、第二人称、第三人称的复数形式,则用are

一般将来时:

will be

一般时态有关be动词的口诀:

我用am,你用areis连接他//它,复数形式就用are

 

be动词的用法:
现在时 I am, you are, he is, we are, you are, they are
(缩略式 I'm, you're, he's, we're, you're, they're),
(否定缩略式 I'm not, isn't, aren't),
过去时 I was, you were, he was, we were, you were, they were
(过去时否定缩略式 wasn't, weren't),
过去分词been,现在分词being
英语的“be”是个特殊动词;有些语言,如马来文等,并没有“be”这样的动词。
“Be”除了原形的“be”之外,还有另外七种形式:
am, is, are, been, being, was, were.
在句子中,“be”可以是主动词(The Principal Verb)或助动词(The Auxiliary Verb)


系动词Be(am, is, are )的用法:
一、口诀:
我用am,你用are,is连着他,她,它;
单数名词用is,复数名词全用are;
变疑问,往前提,句末问号某丢弃;
变否定,更容易,be后莫忘记;
疑问否定任你变,句首大写莫迟疑。

二、Be动词在一般过去时中的变化:
1、am和is在一般过去时中变为was;
2、are在一般过去时中变为were
3、带有was或were的句子,其否定、疑问的变化和am is are一样,即否定句在was或were后加 not,一般疑问句把was或were调到句首。
否定句:
表示否定的句子。必须有否定词。
否定句的构成形式:
a. 谓语为be动词时,“be+not "一名学生。
b. 谓语为实义动词而且没有情态动词和助动词时,“do/ does/ did+not"构成否定。 
例:I do not like dancing. 我不喜欢跳舞。 
      He does not want to go to school. 他不想去上学。
c. 谓语为“情态动词+实义动词”时,“情态动词+not”构成否定。 
例:You must not smoke. 你千万不要吸烟。 
       I can not catch it. 我抓不住它。
否定句在英语语法中可以分为九类:
(1)一般否定句
I don't know this. No news is good news.
There is no person(smoking)/not a person/not any person(smoking)in the house.
(2)特指否定
He went to his office, not to see him.
I am sorry for not coming on time.
I don't think/believe/suppose/feel/imagine you are right.
(3)部分否定
All the answers are not right
All is not gold that glitters
I don't know all of them.
I can't see everybody/everything.
Both of them are not right.
(4)全体否定
None of my friends smoke.
I can see nothing/nobody.
Neither of them is right.
Nothing can be so simple as this.
(5)延续否定
You didn't see him, neither/nor did I.
You don't know, I don't know either.
He doesn't know English, let alone/to say nothing of/not to speak of(更不用说)French.
(6)半否定句
We seldom/hardly/scarcely/barely hear such fine singing.
I know little English. I saw few people.
(7)双重否定
You can't make something out of nothing.
What's done cannot be undone.
There is no sweet without sweat.
No gain without pains.
I can't help /keep/ laughing whenever I hear it.
No man is so old but(that)he can learn.
(8)排除否定
Everyone is ready except you.
He did nothing but play.
But for your help, I couldn't do it.
(9)加强否定
I won't do it at all.
I can't see it any more.
He is no longer a boy.

否定转移的形式与用法:
一、动词的否定转移
1.形式上否定主句的谓语,实际上是否定从句的谓语
当动词“think”、“believe”、“suppose”、“imagine”、“expect”、“feel”的主语是第一人称,谓语动词为没有任何副词修饰的一般现在时,它们的否定式实际上是对宾语从句的否定。
表示说话者提出一种委婉的看法或主张。如:
I think that he will help us.——I don’t think that he will help us. 我认为它不会帮助我们。
I believe that he is right.——I don’t believe that he is right. 我认为他不对。
I suppose that he likes it.——I don’t suppose that he likes it. 我想他不喜欢它。

2. 形式上否定谓语动词,实际上否定复合宾语
当动词“think”、“believe”、“suppose”、“imagine”、“expect”、“feel”、“find”的主语是第一人称,谓语动词为没有任何副词修饰的一般现在时,它们前面的否定式实际上是对复合宾语的否定。表示说话者所提出的一种委婉的看法或主张。如:
I think math difficult. — I don’t think math difficult. 我认为数学不难。
I find the story interesting. — I don’t find the story interesting. 我认为这个故事没有趣。
I expect so. —I don’t expect so. 我认为不会。

二、动词“think”、“believe”、“suppose”、“imagine”、“expect”、“feel”在下列情况下,否定不转移:
1.这些动词跟其他另一个动词一起做并列谓语时,否定不转移。如:
I believe and hope he won’t do that. 我相信并且也希望他将不会那样做。
I feel and admit that we are not foolish. 我觉得并且也承认我们并不愚蠢。

2.用于疑问句时,否定不转移。如:
Do you think it is not going to rain? 你认为天不会下雨吗?
Don’t you believe that he has done a good thing? 难道你不相信他做了一件好事?

3.用作插入语时,否定不转移。如:
Li Lei, I think, won’t be angry with you. 我想李蕾不会生你的气。
Tom, I suppose, won’t be against it. 我猜想汤姆不会反对。
Mike, I believe, hasn’t seen the film. 我认为迈克没有看这场电影。

4.动词前有其他副词修饰时,否定不转移。如:
I really don’t think it’s necessary for us to go there now. 我的确不认为我们有必要去那儿。
I feel strongly that he shouldn’t do such a thing. 我强烈地认为他不应该做那样的事。

5.动词为非一般现在时或主语不是第一人称时,否定不转移。
I thought that he wouldn’t come back soon. 我原以为他不会回来得这么快。
She didn’t believe that he became a good boy. 她不相信它变成了一个好孩子。
He thinks that he isn’t fit for the job. 他认为他不适合这件工作。
He doesn’t believe that what we told him is true. 他不相信我们告诉他的事是真的。

6.当宾语从句中含的否定为“not……at all”、“not a little”、“not a few”、“not enough”、“can’t help”等固定搭配时,否定不转移。如:
I think that he doesn’t know it at all. 我想他对那一点也不知道。
I suppose that it is not enough to remember the words if you want to learn the language well. 我认为如果你想把这门语言学好,那么只记单词是不够的。
I believe that you can’t help singing our national anthem when you win the first place in the Olympic Games. 我相信当你在奥运会上获得第一名时你会情不自禁地唱起国歌来。

7.当宾语从句中含“no”、“nothing”、“nobody”、“nowhere”、“hardly”、“seldom”、“little”、“few”等否定词或半否词时,否定不转移。如:
I believe that nothing can make me give it up. 我想任何事情也不能使我放弃。
I think that no one can escape if the ship sinks in the sea. 我认为如果这艘船沉入海底的话,那么谁也逃不掉。
I suppose that he is a man of few words. 我猜想他是一个言语不多的人。