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情态动词的用法硕士论文开题报告范文 与情态动词的用法方面硕士论文开题报告范文

分类:职称论文 原创主题:情态动词的用法论文 发表时间: 2024-02-20

情态动词的用法,本文是情态动词的用法硕士学位论文范文跟情态动词和用法有关毕业论文开题报告范文.

一、情态动词的语法特征

(1) 情态动词不能表示正在发生或已经发生的事情,只表示期待或估计某事的发生.

(2) 情态动词除ought 和he 外,后面只能接不带to 的不定式.

(3) 情态动词没有人称,数的变化,即情态动词第三人称单数不加-s.

(4) 情态动词没有非谓语形式,即没有不定式,分词等形式.

二、比较can 和be able to

(1)can could 表示能力;可能 (过去时用could),只用于现在式和过去式(could).be able to可以用于各种时态.

They will be able to tell you the news soon.他很快就能告诉你消息了.

(2)只用be able to

a.位于助动词后.

b.情态动词后.

c.表示过去某时刻动作时.

d.用于句首表示条件.

e.表示成功地做了某事时,只能用was/were able to, 不能用could.

He was able to flee Europe before the war broke out.

等于 He managed to flee Europe before the war broke out.

注意:could不表示时态

(1)提出委婉的请求,(注意在回答中不可用could).

—Could I he the television on?

—Yes, you can./ No, you can’t.

(2)在否定,疑问句中表示推测或怀疑.

He couldn’t be a bad man.

他不大可能是坏人.

三、比较may和might

(1) 表示允许或请求;表示没有把握的推测;may 放在句首,表示祝愿.

May God bless you!

He might be at home.

注意: might 表示推测时,不表示时态.只是可能性比may 小.

(2)成语: may/might as well,后面接不带to 的不定式,意为“不妨”.

If that is the case, we may as well try.

典型例题

Peter ___come with us tonight, but he isn’t very sure yet.A.must B.may C.can D.will

答案B.表可能性只能用may. 此句意可从后半句推出.

四、比较he to和must

(1)两词都是“必须”的意思,he to 表示客观的需要, must 表示说话人主观上的看法,既主观上的必要.

My brother was very ill, so I had to call the doctor in the middle of the night. 我弟弟病得很厉害,我只得半夜里把医生请来.(客观上需要做这件事)

He said that they must work hard.他说他们必须努力工作.(主观上要做这件事)

(2)he to有人称、数、时态的变化,而must只有一种形式.但must 可用于间接引语中表示过去的必要或义务.

He had to look after his sister yesterday.

(3)在否定结构中: don’t he to表示“不必”

mustn’t表示“禁止”,

You don’t he to tell him about it.  你不一定

要把此事告诉他.

You mustn’t tell him about it.你一定不要把这件事告诉他.

五、must表示推测

(1) must用在肯定句中表示较有把握的推测,意为“一定”.

(2) must表对现在的状态或现在正发生的事情的推测时, must 后面通常接系动词be 的原形或行为动词的进行式.

You he worked hard all day.You must be tired.  你辛苦干一整天,一定累了.

(对现在情况的推测判断)

He must be working in his office.他一定在办公室工作呢.

比较:

He must be staying there.

他现在肯定呆在那里.

He must stay there.

他必须呆在那.

(3) must 表示对已发生的事情的推测时,must 要接完成式.

I didn’t hear the phone.I must he been asleep. 我刚才没有听到电话,我想必是睡着了.

(4) must表示对过去某时正发生的事情的推测,must 后面要接不定式的完成进行式.

—Why didn’t you answer my phone call?

—Well, I must he been sleeping, so I didn’t hear it.

(5) 否定推测用can’t.

If Tom didn’t lee here until five o’clock, he can’t be home yet. 如果汤姆五点才离开这儿,他此时一定还未到家.

六、表示推测的用法

can, could, may, might, must 皆可表示推测,其用法如下:

(1)情态动词+动词原形.

表示对现在或将来的情况的推测,此时动词通常为系动词.

I don’t know where she is, she may be in Wuhan.

(2)情态动词+动词现在进行时.

表示对现在或将来正在进行的情况进行推测.

At this moment, our teacher must be correcting our exam papers.

这时,我们老师想必在批改试卷.

(3)情态动词+动词完成时.

表示对过去情况的推测.

We would he finished this work by the end of next December.

明年十二月底前我们很可能已完成这项工作了.

The road is wet.It must he rained last night.

地是湿的,昨天晚上一定下雨了.

(4)情态动词+动词的现在完成进行时.

表示对过去正在发生事情的推测.

Your mother must he been looking for you.

你妈妈一定一直在找你.

(5)推测的否定形式,疑问形式用can’t, couldn’t表示.

Mike can’t he found his car, for he came to work by bus this morning.迈克一定还没有找回他的车,因为早上他是坐公共汽车来上班的.

注意:could, might表示推测时不表示时态,其推测的程度不如can, may.

七、情态动词+ he +过去分词

(1) may(might) he + done sth, can (could) he + done sth 表示过去,推测过去时间里可能发生的事情.

Philip may (might) he been hurt seriously in the car accident.

Philip can (could) he been hurt seriously in the car accident.

(2)must he +done sth,对过去时间里可能发生的事情的推测,语气较强,具有“肯定”,“谅必”的意思.

—Linda has gone to work, but her bicycle is still here.

—She must he gone by bus.

(3) ought to he done sth, should he done sth

本应该做某事,而事实上并没有做.否定句表示“不该做某事而做了”.

You ought to (should) he been more careful in this experiment.He ought not to he thrown the old clothes away.(事实上已扔了.)

ought to 在语气上比should 要强.

(4) needn’t he done sth  本没必要做某事

I dressed very warmly for the trip, but I needn’t hedone so.The weather was hot.

(5) would like to he done sth  本打算做某事

I would like to he read the article, but I wasvery busy then.

八、should 和ought to

should 和ought to 都为“应该”的意思,可用于各种人称.

—Ought he to go?

—Yes.I think he ought to.

表示要求,命令时,语气由 should(应该)、had better(最好)、must(必须)渐强.

九、had better表示“最好”

had better 相当于一个助动词,它只有一种形式,它后面要跟动词原形.

had better do sth

had better not do sth

It is pretty cold.You’d better put on my coat.

She’d better not play with the dog.

had better he done sth表示与事实相反的结果,意为“本来最好”.

You had better he come earlier.

十、would rather表示“宁愿”

would rather do

would rather not do

would rather… than…宁愿……而不愿

还有would sooner, had rather, had sooner都表示“宁愿”、“宁可”的意思.

If I he a choice, I had sooner not continue my studies at this school.I would rather stay here than go home.等于 I would stay here rather than go home.

典型例题

—Shall we go skating or stay at home?

—Which ___ do?

A.do you rather B.would you rather C.will you rather D.should you rather答案B.本题考查情态动词rather的用法,would rather +do sth 意为“宁愿”,本题为疑问句,would 提前,所以选B.

十一、will和would

注意:

(1)would like; would like to do 等于 want to 想要,为固定搭配.

Would you like to go with me?

(2)Will you…? Would you like…? 表示肯定含义的请求劝说时,疑问句中一般用some, 而不是any.

Would you like some cake?

(3)否定结构中用will,一般不用would, won’t you是一种委婉语气.

Won’t you sit down?

十二、情态动词的回答方式

问句  肯定回答 否定回答

Need you…? Yes, I must.  No,I needn’t.

Must you…? Yes,you can. No,you don’t he to.

典型例题

(1)—Could I borrow your dictionary?

—Yes, of course, you .

A.might B.will C.can D.should

答案C.could表示委婉的语气,并不为时态.答语中of course,表示肯定的语气,允许某人做某事时,用can和 may来表达,不能用could或might.复习: will 与you连用,用来提出要求或下命令.should与you 连用,用来提出劝告.

(2)—Shall I tell John about it?

—No, you .I’ve told him already.

A.needn’t B.wouldn’t

C.mustn’t D.shouldn’t

答案A.needn’t 不必,不用. wouldn’t 将不, 不会的. mustn’t 禁止、不能. shouldn’t 不应该.本题为不需要,不必的意思,应用needn’t.(3)—Don’t forget to come to my birthday party tomorrow.

—______.

A.I don’t  B. I won’t  C.I can’t D.I hen’t

答案B. will既可当作情态动词,表请求、建议、也可作为实义动词表“意愿、意志、决心”,本题表示决心,选B.

十三、带to 的情态动词

带to 的情态动词有四个:ought to, he to, used to, beto, 如加上he got to ,(等于must), be able to,为六个.它们的疑问,否定形式应予以注意:

Do they he to pay their bill before the end of the month?

She didn’t use to play tennis before she was fourteen.

You ought not to he told her all about it.

Ought he to see a heart specialist at once.?

ought to 本身作为情态动词使用.其他的词作为实义动词使用,变疑问,否定时,须有do 等助动词协助.

典型例题

Tom ought not to ___ me your secret, but he meant no harm.

A.he told B.tell C.be telling D.hing told

答案A.由于后句为过去时,告诉秘密的动作又发生在其前因,此地应用过去完成时,但它在情态动词 ought to 后,所以用he.

十四、比较need和dare

这两词既可做实义动词用,又可做情态动词用.作为情态动词,两者都只能用于疑问句,否定句和条件句.need 作实义动词时后面的不定式必须带to,而dare作实义动词用时, 后面的to 时常可以被省略.

(1) 实义动词: need (需要, 要求)

need + n./ to do sth

(2) 情态动词: need,只用原形need后加do,否定形式为need not.

Need you go yet?

Yes, I must./ No, I needn’t.

(3) need 的被动含义:need, want, require, worth(形容词)后面接doing也可以表示被动:

need doing 等于 need to be done

该文点评:本文论述了适合不知如何写情态动词和用法方面的情态动词的用法专业大学硕士和本科毕业论文以及关于情态动词的用法论文开题报告范文和相关职称论文写作参考文献资料.

参考文献:

1、 情态动词can can 在英语中有一个特殊的名字,叫做情态动词,表示“能够”,“ 会”,“ 能力”后面要跟着表示动作的动词 没有时态和人称的变化.

2、 动词的用法 I 动词原形的用法1 除单三人称的一般现在时,其它人称作主语,动词用原形 2 将来时态shall, will, should, would之后用动词原形 3 祈使句句子开头用动词原形 4 助动词do,.

3、 者字的词义和用法 辽宁省本溪市十三中学 李 伟最近高考中考的语文试题中,经常出有关“者”字的题目 “者”分段字在汉语中,出现较早,诗经左传里就多有出现 汉代的说文把它.

4、 疑问代词的用法 疑问代词用来提出问题的代词称为疑问代词   1、who、whom、whose、what、which、whoever、whatever、whichever主要用于特殊疑问句中,一般放在句首 口语中也常.

5、 聚焦现在进行时用法 现在进行时是七年级必须掌握的重要语法知识点之一,也是中考英语必考考点,下面,我们一起来看看现在进行时的用法吧 一、现在进行时的定义现在进行时表示说话时正在进行或发生的动作 二、现在进行时的构成现在进行.

6、 小学英语动词的用法 一、加to do 的高频考查动词1 afford to do 负担的起做某事We can’t afford to make any mistakes 我们承担不起任何失误 2 agr.