文档库 最新最全的文档下载
当前位置:文档库 › 情态动词讲义

情态动词讲义

情态动词讲义
情态动词讲义

情态动词讲义

表说话人的语气,

或表示对事态发展可能性的推测

can 和could:

1) can的主要用法是:

A. 表示能力:The girl can dance very well.

B. 在口语中相当于may,表示允许或请求允许: Can I sit here?

C.推测事物发生的可能性,多用于疑问及否定句:

The news can’t be true.

Where can he be?

D.用于肯定句中,表示有时候可能会:

Don’t throw it away; it can be useful in the future.

Anyone can make mistakes.

Sometimes it can be very cold in the south.

E.用于否定句,疑问句中,表示惊异,怀疑,不耐烦等语气。

How can you be so careless!

明题欣赏:

--Mum, I’ve been studying English since 8 o’clock. __I go out and play with T om for a while?

A. Can’t

B. Wouldn’t

C. May not

D. Won’t

4. How ____ you say that you really understand the whole story if you have covered only part of the article?

A. can

B. must

C. need

D. may

F.特殊句式can’t ----too/enough

表示“无论---也不过分”“越----越好”

Y ou can’t be too careful while driving.

Y ou can’t remember enough words.

2) could的主要用法是:

A.表示过去的能力:We couldn’t use the computer ten years ago.

B.表示允许或请求允许, 但语气较can客气、委婉:

Could you lend me your dictionary?

C.表示推测,但是可能性比can要小:

We all knew that the young man couldn’t be a doctor.

5. There ____ be any difficulty about passing the road test since you have practiced a lot in the driving school.

A. mustn’t

B. shan’t

C. couldn’t

D. needn’t

注意:

1)表能力时, can = be able to

When he was three, he was able to/could swim.

但当叙述过去经过一番努力才能完成的事情,用was/were able to不用could.

The fire spread quickly, but luckily everyone in the building was able to escape.

2)表示推测种种:

现在的状况:This young girl can’t be our new teacher.

现在的动作: They are talking. I am interested in what they can/could be talking.

过去的情形:

He can’t/couldn’t have gone to school yesterday because he was very ill.

I don’t know why she didn’t call me yesterday. Can/Could she have forgotten my telephone number.

3. The room is in a terrible mess; it ____ cleaned.

A. can’t have been

B. couldn’t be

C. may have been

D. would be

3)could可以用来表示虚拟

Y ou could have finished the task on time.

How I wish I could fly.

may 和might :

1) may的主要用法是:

A.表示允许或请求允许,比can正式:

May I come in ? Y ou may go now.

----____ I go out to play, mum?

----No, you___. Y ou should do your homework first.

A. Might; wouldn’t

B. May; had better not

C. Must; mustn’t

D. Need; mustn’t

B.推测事物发生的可能性,“也许” “可能”: 通常用于肯定句和否定句中。

He may know where our head teacher is.

She may not be here today.

2. ---Where is Emma?

---I can’t say for sure where she is, but she___ be out shopping.

A. can

B. should

C. must

D. may

C.表示祝愿,但语气较正式: May you succeed!

May you have a good journey!

D:特殊句式

may/might as well do --- 还是---的好,最好,倒不如may well 很可能

Y ou may as well do it at once.

We may as well stay where we are.

2) might的主要用法是:

A. 表示允许(多在间接引语中表示过去的允许)。

She said that he might take her bike.

Might I have a word with you?

B. 推测事物发生的可能性,其可能性要比may 小。

She might go home tomorrow.

注意: 表示推测种种:

现在的状况: The light is on. My father may/might be at home.

现在的动作:Where are the students?

They may/might be having a PE lesson.

过去的情形:He knows the book very well. He may/might have read it many times.

must 的主要用法:

A.表示责任或义务: We students must study hard. It is our duty.

B.表示推测,语气非常肯定,一般用在肯定句。It must be eleven o’clock now.

H9.(湖南卷30)

—It’s the office! So you_____ know eating is not allowed here.

—Oh, sorry.

A. must

B. will

C. may

D. need

注意: must not 的意思是不许可,不应该或者禁止,语气比may not坚定。

We mustn’t waste our time.

---- May I take this magazine out?

---- No, you mustn’t.

must 用于一般疑问句的时候,肯定回答除了用Y es, you must.还可以用Y es, please 或者I’m afraid so, 其否定回答应该用needn’t 或者don’t have to。

----Must we hand in our homework today?

----Y es, you must (是的,必须)

-----No, you needn’t/you don’t have to(不,不必)

注意: must = have / has to

must表示主观的看法与态度,have/has to表示客观的需要.

We must do everything step by step.

I have to go now, for I’ve got a meeting later.

Must 表示推测种种:

现在的状况:Our teacher must be in his office.

现在的动作:My mother must be cooking at home now.

过去的情形:He must have heard of the secret.

Must可以表示“偏偏”“固执”之意,指令人不愉快的事情。

The car must break down just when I was about to start.

Why must it rain on Sunday?

Must you make so much noise?

If you must smoke, please go out.

明题欣赏:

----Who is the girl over there?

----Well, if you ___ know, her name is Mabel.

A. may

B. can

C. must

D. shall

will和would:

1. will/would是助动词

will/would用于构成将来时及过去将来时是助动词。

2. will/would是情态动词

(1.)表示主观意愿,意志用于各种人称,

Do what you will.

She said she would take care of the child.

The man would not let her enter the hall.

If you will help me, I will go with you.

(2.)表示经常性,习惯性,倾向性,必然性

译为经常,惯于,总是

Mary will read for hours at a time.

Oil will float on water.

The fish will die without water

2. will/would作为情态动词的主要用法:

在疑问句中用于第二人称,询问意愿或表达请求, would比will的语气要客气婉转If you want help - let me know, will you?

Would you help us, please?

I’d like to go there with you.

shall和should:

1. shall用于构成将来时是助动词。

Perhaps I shall pay a visit to England this winter. (构成一般将来时, 助动词)

2.Shall 用于一三人称疑问句中表示向对方征求意见和请示

Shall we go by train, Mom?

Shall they wait here or outside?

3. Shall 用于二三人称中,表示命令·许诺·警告·强制·威胁·决心等用于陈述句。

Y ou shall have my answer tomorrow. (允诺)

He shall be sorry for it one day, I tell you.(警告)

Y ou shall do as I tell you.(命令)

Nothing shall stop us from carrying out this plan. (决心)

2. should表示义务、建议、劝告,意为“应该”。“should+ have+过去分词”

表示本应该在过去做但没有做。

Y ou should keep your promise. 你应该遵守诺言。

She should have passed the exam. 她应该通过考试的。

3. Should 表示惊异,怀疑,不满等情绪用语从句表示竟然,should一般不省略。

It’s a great pity that he should be so careless .

It’s strange that she should have failed to see her own shortcomings .

用在expect ,think believe等词的宾语从句中表示惊异,怀疑,不满

I never expect that you should have come here.

情态动词+have done

May have done 可能做过

Must have done 肯定做过

Can’t /couldn’t have done 不可能做过

Should/ought to have done 本该做而未作

Shouldn’t/oughtn’t to have done本不该但是做了

Needn’t have done 本没必要做但是做了

Could have done 本可能做而未作

He did not regret saying what he did but felt that he ____it differently.

A. could express

B. would express

C. could have expressed

D. must have expressed

10.(天津卷15)

This printer is of good quality. If it _______ break down within the first year, we would repair it at our expense.

A. would

B. should

C. could

D. might

语法规则-情态动词

初中英语情态动词用法详解 【情态动词知识梳理】 情态动词有具体的词义,但也同助动词一样,需要与其他词语一起构成句子的谓语,另外情态动词没有人称和数的变化,情态动词后必须跟动词原形。 考点一:can,may,must等情态动词在陈述句中的用法: 1. can的用法: (1).表示能力、许可、可能性。表示能力时一般译为“能、会”,即有种能力,尤其是生来具备的能力,此时may和must均不可代替它。如:She can swim fast, but I can’t . 她能游得很快,但我不能。I can see with my eyes.我用眼睛看。 (2).表示许可,常在口语中。如:You can use my dictionary. 你可以用我的字典。(3).表示推测,意为“可能”,常用于否定句和疑问句中,此时can’t译为“不可能”。如:Can the news be true?这个消息会是真的吗?—Can it be our teacher?那个人有可能是我们老师吗?—No, it can’t be our teacher. He is on a visit to the Great Wal l.不可能。咱们老师正在游览长城呢。 【例题】—I think Miss Gao must be in the library. She said she would go there.—No. She __be there, I have just been there. 【解析】根据下文“我刚去过那儿”可知,应为“不可能”,can’t表示推测[答案] 2. could的用法: (1).can的过去式,意为“能、会”,表示过去的能力。如:He could write poems when he was 10. 他十岁时就会写诗。 (2). could在疑问句中,表示委婉的语气,此时could没有过去式的意思。如:Could you do me 你能帮我个忙吗?—Could I use your pen?我能用一下你的钢笔吗?—Yes, you can.可以。(注意回答) 3. may的用法: (1).表示请求、许可,比can正式,如:May I borrow your bike?我可以借你的自行车吗?You may go home now.现在你可以回家了。 【例题】—_______ I borrow your MP3?—Sure . Here you are. A. May B.Should C.Must D.

初中英语情态动词专项练习题 (2)

初中英语情态动词专项练习题 情态动词:can could may might will would must have to need had better should 情态动词特点 1.情态动词没有人称和数的变化. 2.情态动词后必须跟动词原形。 考点一:can,could, may,must 等情态动词的用法: 1. can 的用法: (1).表示能力,译为“能、会”,即有种能力,尤其是生来具备的能力。 She can swim fa st, but I can’t . 她能游得很快,但我不能。 I can see with my eyes. 我用眼睛看。 (2).表示许可,常在口语中。 You can use my dictionary. 你可以用我的字典。 (3).表示推测,条件: 常用于否定句和疑问句中,此时can’t 译为“ 不可能”。 Can the news be true? 这个消息会是真的吗? —Can it be our teacher?那个人有可能是我们老师吗? —No, it can’t be our teacher. He is on a visit to the Great Wall.不可能。咱们老师正在游览长城呢。【例题】—I think Miss Gao must be in the library. She said she would go there. —No. She __be there, I have just been there. A.can’t B.mustn’t C.needn’t D.wouldn’t 【解析】根据下文“我刚去过那儿”可知,应为“ 不可能”,can’t表示推测[答案] A 2. could的用法: (1).can的过去式,意为“ 能、会”,表示过去的能力。 He could write poems when he was 10. 他十岁时就会写诗。 (2). could在疑问句中,表示委婉的语气,此时could 没有过去式的意思。 Could you do me a favour? 你能帮我个忙吗? —Could I use your pen? 我能用一下你的钢笔吗? —Yes, you can.可以。(注意回答,用could提问,必须用can来回答) 3. may的用法: (1).表示请求、许可,比can 正式 May I borrow your bike? 我可以借你的自行车吗? You may go home now. 现在你可以回家了。 【例题】—_______ I borrow your MP3? —Sure . Here you are. tA. May B.Should C.Must D. Would 【解析】在此处表示请求,意为“ 做……可以吗”。答案:A

(完整word版)情态动词讲解及练习题

情态动词 一.情态动词基本用法 1.? can和could,用在否定句和疑问句中,表示惊讶,用在否定句和疑问句中。 How could you do such a silly thing? ?cannot....too/enough 表示“无论...也不过分,越...越好”。 You can’t be too careful while driving? 2.may和might的区别 ?表示许可、可能性、祝愿等意义,might比may更委婉。 A:给别人许可时。-May I play basketball this afternoon? B:may/might as well+动原,“最好,倒不如”。 表示禁止。 ?may作“可以”讲时,疑问句回答用mustn’t/can’t 3. Must的用法 ?表示禁止(用于否定中) You mustn’t smoke in the bedroom. ?表示偏执、固执 -Could I have a word with you,mum? -Oh dear,if you must. ?must的否定回答 A:作必须讲时,疑问否定回答用don’t have to,needn’t B:推测,一定讲时,回答用can’t. 表禁止。 C:mustn’t 委婉) --May I use your car? --No, you mustn’t./ -Sorry,you’d better not.(注意:must强调内在职责,而have to 强调迫于外界压力,不得已而为之。 4 .shall的用法 ?一、三人称征求意见时。请求对方时。Shall we begin our class? ?二,三人称陈述句中,说话人给对方的命令,警告、允诺或威胁。 You shall not get my support if you do such a thing. 5.will和would的区别 ?自愿主动提出,如:意志、愿望或决心,would 过去,will not表示拒绝。 I have told him again and again to stop smoking,but he will not listen. ?will习惯性动作,有“总是”或“总要”之意。 Everything he will have a walk along this year. ?would过去习惯性动作,比used to 正式。 Last year our English teacher would sometimes tell us stories in English after Class. ?used to do 过去常,过去一直------只表示过去。 用来”/be used to doing习惯于-----可表过、现或将。 be used to do “ 6.dare表示敢于情态:dare do Dare you go home along? 及物:dare to do Do they dare to say what she thinks? 7.need用法情态:need do 及物need to do表示主动 need doing 被动My overcoats needs washing.

can与could的用法详解及情态动词有关习题

c a n与c o u l d的用法详解及情态动词有关习题 Company Document number:WTUT-WT88Y-W8BBGB-BWYTT-19998

can与could的用法详解 一、表示能力 (1)表示现在的能力,用can: My sister can drive. 我妹妹会开车。 Everyone here can speak English. 这儿人人会说英语。 (2)表示将来的能力,通常不用can或could,而用be able to的将来时态: I’ll be able to speak French in another few months. 再过几个月我就会讲法语了。 One day people will be able to go to the moon on holiday. 总有一天人们可以到月球上去度假。 但是,若表示现在决定将来是否有能力做某事,则可用 can: Can you come to the party tomorrow 你明天能来参加我们的聚会吗 (3)表示过去的能力,有时可用could,有时不能用could,具体应注意以下几点: ①若表示过去一般的能力(即想做某事就随时可做某事的能力),可用could: Could you speak English then 那时候你会说英语吗 ②若表示过去的特定能力(即在过去特定场合做某事的能力),则不能用could,而用w as (were) able to do sth,或用 managed to do sth,或用 succeeded in doing sth 等。 He studied hard and was able to pass the exam. 他学习很努力,所以考试能及格。 At last he succeeded in solving the problem. 他终于把那个问题解决了。 【注】could 不用来表示过去特定能力通常只限于肯定句,否定句或疑问句中,它则可以表示过去特定的能力: I managed to find the street, but I couldn’t find her house. 我想法找到了那条街,但没找到她的房子。(前句为肯定句用managed to,不用could,后句为否定句,可用could)另外,could还可与表示感知的动词(如see, hear, smell, taste, feel, understand等)连用表示的特定能力: Looking down from the plane, we could see lights on the runway. 从飞机上向下看,我们可以看见机场跑道上的点点灯火。 还有在中,could也可表示: He said he could see me next week. 他说他下周能见我。 二、表示许可 (1)对于现在或将来的“许可”,要区分以下两种情况: ①表示(即请求别人允许自己做某事),两者均可用,但用could 语气更委婉: Can [Could] I come in 我可以进来吗

(完整版)四情态动词Can专项练习

情态动词Can 专项练习 (基础题)用can 填空 1. He__ ___run . 6.She___ __dive. 2. He__ ___jump. 7.She__ ___fly. 3. He__ ___sing. 8.She___ __paint. 4. He__ ___write. 9.She___ __dance. 5. He__ ___read. 10.She_ ___ c ook. 11.I___ _run . 12.My mother ____ dive. 13.His sister ______________ j ump. 14.Sam ___ fly. 15.Supergirl ______________ s ing. 16.Kitty ___ paint. 17.He_ _ ___write. 18.Our teacher ____ dance. 19.It__ _ __read. 20.Tom___ __cook. 二.选择题 1. ___________ Can you a model ship for him? A.makes B.make C.making 2. —Can you ___ and answer my questions? --Yes,sir. A.stand up. B.stand down. C sit down. 3. ___________ Can you English? A.say B. speak C .tell 4. —How can you ___ ? ---I can go by bus. A.go there B.go to there C. get bus 6. Can you ___ me the way to Jack ' s house? A.know B.show C.say 7. Nancy can ___ cakes for her sister. A.makes B. making C.make 8. You can ___ bus No.6 at the next stop. A. take B.go C.by

情态动词用法讲义

情态动词的用法 在英语中,情态动词属于助动词。除了作简略回答外,它们一般不能单独使用,它们必须与动词原形一起使用构成句子的谓语。不同的情态动词会有不同的意义和用法。有时,同一个情态动词在不同的语境中也会产生不同的含义。 情态动词的推测性用法和非推测性用法 情态动词一般有两种用法:推测性用法和非推测性用 法 。推测性用法是指做出推测,预测事物发生的可能 性;非推测性用法则指情态动词本身的基本含义, 如can表示能力,may 表示许可,must 和should 表示必须和义务,need表示需要等。例如: I can swim.(非推测性用法)This can be true.(推测性用法) You may go now.(非推测性用法)He may be ill now.(推测性用法) You must finish it before lunch time.( 非推测性用法) He must be at home for he never goes out at dinner time.( 推测性用法) 我们把英语中的9大情态动词按其推测性和非推测性用法列表如下 情态动词非推测性用法的说明 1. may和might 表示允许 may可以与不同的人称搭配,表示“许可、允许”。例如: May I know your name? 我允许你第一个离开。) You may kee p the book for two months.( 我允许你借。)

You may be the first to leave if you are in a hurry.(

In certain circumstances a p olice officer may ask a driver to take a breath test. may 用在疑问句中,经常表示"允许、许可”的意思。例如:May I know your name? might 可以用来表示过去时态,也可以表示委婉语气 。例女口 : She said that he might take her dictionary. (may 但在回答中,我们一般用 may 加强肯定的语气,而不用 might .例如:Yes, of course you may. may not 可用来表示“禁止”或“不许”,因语气较强,所以不用 might not. 例如: Students may not stay out of the dormitory after midnight without written p ermission. must not 也可以表示“禁止”,而且语气比 may not 更强,强调上级对下级的不允许。 另外,may/might as well 也是一个常用的词组,后接动词原形,意思是“不妨,最好” 相当于 had better. 例如:It's very late. We might as well go home. 2. can 和 could 1) 表示能力 can,could 和be able to 都可以表示能力。 有时,could 表示的并不是 can 的过去式,而是一种委婉的语气 。例如: Could you run the business yourself? Could you pl ease give me your reply as soon as p ossible? could have done 有虚拟的含义,即“本来能够做,但事实上却没有做” You could have told me earlier. I could have p assed the exam if I had worked harder. 2) 表示许可 can 也可以用来表示“允许” ,例如: Might I have a word with you?( 委婉用法)I wonder if I might have more salad.( 委婉用法) May I come in? 的过去式) 但若要表示在过去某个具体场合下能够做某事的能力,我们用 was/were able to. 例如: — Thank you for your help. — I ‘ m glad I was able to help you.( 在这种情况下能够帮你,而且已经帮了。 ) 所以was/were able to 不仅表示过去的某个具体场合下的能力,还强调动作已经成功完成,相当于 manage to do 或 succeed in doing. 例如: We were able to save him.( 把他救活了。 He was able to expl ain what had happ ened.( 他能解释,而且也解释了 He could expl ain what had happ ened.( 他能做出解释,但可能没有说。 但这种区别只局限在陈述句,在否定句中, be able to 和could 可以互换。 。例如:

英语情态动词用法总结(完整)

英语情态动词用法总结(完整) 一、单项选择情态动词 1.--- Difficulties always go with me! --- Cheer up! If God closes door in front of you, there be a window opened for you. A.must B.would C.could D.can 【答案】A 【解析】 【详解】 考查情态动词辨析。句意:——困难总是伴随着我!——高兴点! 如果上帝在你面前关上了门,一定有一扇窗户为你打开。A. must必须;B. would将要;C. could能,会;D. can能,会。must表示对现在的状态推测时,意为“一定”,表示可能性很大的推测。符合语境。故选A。 【点睛】 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。 3) must 表示对已发生的事情的推测时,must 要接完成式。 4) must表示对过去某时正发生的事情的推测,must 后面要接完成进行式。 5) 否定推测用can't。 本句中的。must表示对现在的状态推测时,意为一定,表示可能性很大的推测。符合第2点用法。 2.Paul did a great job in the speech contest. He many times last week. A.need have practised B.might practise C.must have practised D.could practise 【答案】C 【解析】 【详解】 考查情态动词。句意:保罗在演讲比赛中表现得很好。他上星期一定练习了很多次。must have done是对过去发生的动作最有把握的猜测,意思是“一定”。故C选项正确。 3.He is a bad-tempered fellow, but he ________ be quite charming when he wishes. A.shall B.should C.can D.must 【答案】C 【解析】 【详解】 考查情态动词辨析。句意:他是个脾气不好的家伙,但当他希望自己有魅力的时候,他可

最新情态动词专项练习题及答案详解

最新情态动词专项练习题及答案详解 一、单项选择情态动词 1.—Daddy, would you please buy me an iPhoneX? —If you can pass this midterm examination, you __________ have one as a reward. A.must B.need C.would D.shall 【答案】D 【解析】 【详解】 考查情态动词。句意:爸爸,你可以给我买部iPhone X吗?--如果你通过考试,你就会得到一部作为奖励。A. must一定;B. need必要;C. would将,会;D. shall会。根据语境可知,这句话是父亲对子女的允诺,故选D。 【点睛】 shall的用法。 1. shall作为助动词,一般用于第一人称Ⅰ和We,表示一个将来的动作,构成将来时态。shall后面接动词原形。例如: (1)I shall think it over and Let you know my idea.我将考虑一下此事,然后告诉你我的想法。 (2)We shall have a good time in the park.我们在公园里会玩得很高兴的。 2. shall用于第一人称,表示征求对方的意愿。如:What shall we do this evening? 3. shall用于第一、第三人称疑问句中,表示说话人征求对方的意见或向对方请示。如:Shall we begin our lesson? When shall he be able to leave the hospital? 4. shall用于第二、第三人称,表示说话人给对方命令、警告、允诺或威胁。如:You shall fail if you don't work harder. (警告) He shall have the book when I finish reading. (允诺)He shall be punished. (威胁) 比如本题,根据语境可知,这句话是父亲对子女的允诺,故选D。 2.Paul did a great job in the speech contest. He many times last week. A.need have practised B.might practise C.must have practised D.could practise 【答案】C 【解析】 【详解】 考查情态动词。句意:保罗在演讲比赛中表现得很好。他上星期一定练习了很多次。must have done是对过去发生的动作最有把握的猜测,意思是“一定”。故C选项正确。 3.Ann said whenever her father was unhappy he ________ go out and buy something, usually something large and useless. A.should B.could

人教版英语英语情态动词专项练习经典含答案

人教版英语英语情态动词专项练习经典含答案 一、初中英语情态动词 1.—Must I clean the classroom now? —No, you_______. A. mustn't B. can't C. needn't 【答案】 C 【解析】【分析】句意:--我必须现在把教室打扫干净吗?--不,你不必。must I do …?的否定回答是No, you needn't 或者 No , you don't have to 。根据是否定回答,故选C。 2.—Where is Monica? I can't find her anywhere. —She be in the library. She loves reading books when she is free. A. must B. need C. can't 【答案】 A 【解析】【分析】句意:——莫妮卡在哪?我到处都找不到她。——她肯定在图书馆,她喜欢空闲时看书。A肯定,肯定句中表示推测,B需要,C不可能,否定句中表示推测,根据 She loves reading books when she is free ,可知是肯定句表示推测,故选A。 【点评】考查情态动词,注意情态动词表推测的用法。 3.Please don't make so much noise. I ________ hear the speaker very well. A. needn't B. can't C. shouldn't D. mustn't 【答案】 B 【解析】【分析】句意:请不要发出那么多噪音。我不能很好地听清楚发言者的话。needn't不必;can't不能;shouldn't不应该;mustn't禁止。根据前半句的Please don't make so much noise.可知别人发出了太多噪音,所以他无法听见演讲者的话,故用情态动词can't。故选B。 【点评】考查情态动词,结合句意和词义做出判断。 4.A hard-working man ______ become a great scientist, but a great scientist _______ be a hard-working man. A. can't; can B. may not; must C. can't; must D. may not; can 【答案】 B 【解析】【分析】句意:一个勤奋的人可能不会成为一位伟大的科学家,但是一位伟大的科学家一定是一个勤奋的人。can't不可能,不会;can可能,能,会;may not 可能不;must 必须,一定;结合句意,可知,第一个空为“可能不”,第二个空为“一定”,故答案为B。

情态动词归纳及专项练习题

情态动词归纳及专项练习题 一、单项选择情态动词 1.If we had paid enough attention to the issue of the heavily-overloaded vehicles, the tragedy of the collapse of an overpass in Wuxi _____ avoided. A.should B.could be C.should have been D.could have been 【答案】D 【解析】 【详解】 考查情态动词用法。句意:如果我们对超载车辆问题给予足够的重视,就可以避免无锡立交桥垮塌的悲剧。本句为“情态动词+have done”结构,结合句意表示“本来可以;本来能够”应用could have done结构,且主语与谓语动词avoid构成被动关系,故应用be done形式。故选D。 【点睛】 情态动词+have done的结构和用法有以下几种: 一、must have done sth.“一定做了某事”。表示对过去事情的较有把握的推测,这时只能用在肯定句中,“肯定/必须已经干过……”,在否定句和疑问句中用can’t或co uldn’t或can/ could,例如: 1.From what you said, she must have told you all about it. 从你的话看,她一定告诉了你所有的事情。 二、can/could have done sth.本来能够做某事,而实际上未做; 1.But we could have done it all so much better. 但是,我们本可以把这一切做得更好。 三、can't/couldn't have done sth.不可能做过某事; 1. We could't have done it without you. 没有你我们办不成这事。 四、ought to/should have done sth.过去本应该做某事而实际上并没有做。 You should have done it when you first saw them blooming this spring. 你应该在今年春天第一次看到它们盛开的时候就挖一些的。 2.Even if it’s something you should have done earlier in the wee k or missed a detail on. 甚至你在一个星期前的就提早完成了一件事或者忽略了一个小细节。 2.—I don’t really like Janes. Why did you invite him? —Don’t worry. He come. He said he was’t certain what his plans were. A.must not B.need not C.would not D.might not 【答案】D 【解析】 考察情态动词,题干中的he wasn’t certain说明他可能不来,可能来,因此使用不完全否定,might not。 3.--- Oh, my God! I just missed the last bus back home.

英语情态动词的用法大全附解析

英语情态动词的用法大全附解析 一、初中英语情态动词 1.—We've got everything ready for the picnic. —Do you mean I __________ bring anything with me? A. can't B. mustn't C. couldn't D. needn't 【答案】 D 【解析】【分析】句意:—我们已经为野餐准备好了一切。—你的意思是我不必带任何东西吗?A. can't 不能;B. mustn't 表示禁止,一定不要;C. couldn't不能,表示过去时态;D. needn't不必。结合句意,故选D。 【点评】本题考查情态动词的用法。 2.—How amazing this robot is! —Wow, it has video cameras in its eyes, so it “see” and interact with pe ople. A. may B. can C. must D. should 【答案】 B 【解析】【分析】句意:—这个机器人多么惊人啊!—哇,在它的眼睛里有摄像机,因此它能看见和人打交道。A. may 可以,可能;表示许可,B. can 能;表示能力,C. must 必须;D. should应该;根据it has video cameras in its eyes,可知是有能力看见,故选B。 【点评】考查情态动词辨析。熟记情态动词的含义和用法。 3.—Where is George? —He _______ be here just now. His coffee is still warm. A. need B. can't C. must D. shouldn't 【答案】 C 【解析】【分析】句意:——乔治在哪里?——他刚才一定在这里,他的咖啡还是热的。A. need需要; B. can't 不能,不可能(表示推测); C. must 必须,一定(表示推测); D. shouldn't不应该;根据His coffee is still warm.可知表示肯定推测一定在这儿;故答案为C。 【点评】考查情态动词。掌握情态动词表推测时的意义和用法。 4.— Sorry, I forgot to take money with me. Maybe I can't buy the book you like. — Mum, you ______ worry about it. We can pay by Alipay (支付宝). A. can't B. needn't C. mustn't D. shouldn't 【答案】 B 【解析】【分析】句意:——对不起,我忘记带钱了。也许我不能买你喜欢的书。——妈妈,你不用担心。我们可以用支付宝支付。A. can't不能,指不允许或否定推测;B. needn't 不需,指没必要;C. mustn't不能,表禁止;D. shouldn't不应该,表建议。根据句意语境,本句是说妈妈不需要担心,故答案为B。 【点评】考查情态动词。理解句意并掌握情态动词的意义和用法区别。

最新高一情态动词专项练习题

最新高一情态动词专项练习题 一、单项选择情态动词 1.I use a clock to wake me up because at six o'clock each morning the train comes by my house. A.couldn't B.mustn't C.shouldn't D.needn't 【答案】D 【解析】 试题分析:考查情态动词辨析。A不可能;B禁止,千万不能;C不应该;D不需要;句意:我不需要使用闹钟叫醒我,因为每天早上六点都有一列火车经过我的家旁边。根据句意可知我不需要使用闹钟。故D正确。 考点:考查情态动词词义辨析 2.Mr. Baker, some students want to see you. ______ they wait here or outside? A.May B.Should C.Shall D.Will 【答案】C 【解析】 【详解】 考查Shall的用法。句意:贝克先生,有些学生想见你。他们是在这里等还是在外面 等?Shall用于第一、第三人称疑问句中,表示说话人征求对方的意见或向对方请示。故选C。 【点睛】 Shall的用法 Shall作为助动词,一般用于第一人称Ⅰ和We,表示一个将来的动作,构成将来时态。Shall后面接动词原形。例如: (1)I shall think it over and Let you know my idea.我将考虑一下此事,然后告诉你我的想法。 (2)We shall have a good time in the park.我们在公园里会玩得很高兴的。常考的特殊用法 1. Shall用于第一人称,表示征求对方的意愿。如:What shall we do this evening? 2. Shall用于第一、第三人称疑问句中,表示说话人征求对方的意见或向对方请示。如:Shall we begin our lesson?When shall he be able to leave the hospital? 3. Shall用于第二、第三人称,表示说话人给对方命令、警告、允诺或威胁。如:You shall fail if you don't work harder. (警告) He shall have the book when I finish reading. (允诺) He shall be punished. (威胁) 3.--- Oh, my God! I just missed the last bus back home. --- That’s really bad. I’m sure you ______ it, but you just didn’t hurry up. A.had caught B.could have caught C.could catch D.can catch

情态动词的用法完整详细

情态动词 定义: 情态动词是一种本身有一定的词义,但要与动词原形一起使用,给谓语动词增添情态色彩,表示说话人对有关行为或事物的态度和看法,认为其可能、应该或必要等。 情态动词后面加动词原形。 分类: 情态动词有四类: ①只做情态动词:must,can(could),may(might),ought to ②可做情态动词又可做实义动词:need,dare ③可做情态动词又可做助动词:shall(should),will(would) ④具有情态动词特征:have(had) to,used to 位置: 情态动词在句中放在谓语动词之前, 谓语动词前若有助动词,则在助动词之前,疑问句中, 情态动词 则在主语之前。 I can see you. Come here. 我能看见你,过来吧。 He must have been away. 他一定走了。 What can I do for you? 我能帮你吗? How dare you treat us like that! 你怎能那样对待我们! 特点: 情态动词无人称和数的变化, 情态动词后面跟的动词需用原形,否定式构成是在情态动词后面加"not"。个别情态动词有现在式和过去式两种形式, 过去式用来表达更加客气, 委婉的语气, 时态性不强, 可用于过去,现在或将来。情态动词属非及物动词,故没有被动语态。情态动词没有非谓语形式,即没有不定式,分词,等形式。 He could be here soon. 他很快就来。 We can't carry the heavy box. 我们搬不动那箱子。 I'm sorry I can't help you. 对不起,我帮不上你。 基本助动词与情态助动词最主要的区别之一是,基本助动词本身没有词义,而情态助动词则有自己的词义,能表示说话人对有关动作或状态的看法,或表示主观设想: What have you been doing since? (构成完成进行体,本身无词义) I am afraid I must be going. (一定要) You may have read some account of the matter. (或许已经) 除此之外,情态助动词还有如下词法和句法特征:

情态动词表推测的讲解及练习题

九年级英语表推测语气的讲解与练习 表推测时,英语中只使用must,may,might,may not和can't。这五个表达的语气依次递减: must:一定(语气肯定)may:也许(不很肯定)might:或许(比may 语气更弱)may not:也许不(表否定)can't:一定不(must 的反义)推测现在的事情用must,may,might,may not和can't+do 或be e.g.She must be at home now. The boy may play now. 推测过去的事情用must,may,might,may not和can't+have done e.g.She might have been ill yesterday. He must have hold the party. 情态动词must, can, could, may, migh表t 推测的用法 情态动词中的must, can, could, may, might都表推测。其中must 的可能性最大,can / could次之,may / might 最小。具体用法如下: 1. must 的用法 (1)表示推测“可能性”时,意思是“一定、准是”,语气较肯定,较有把握。 He must be American. = It is certain that he is American.他准是个美国人。 (2)must 表推测只能用于肯定句。如果要表示“一定不、肯定不”的意思时,应用can'如t, 询问某种可能时,应用can。 He must know my address. 他肯定知道我的地址。(一定) He can ' t know my addres他s. 肯定不知道我的地址。(一定不) Can he know my address? 他知道我的地址吗?(询问可能性) (3)must 表示推测时,可以推测现在/正在发生的动作/过去发生的动作。 He must have a car now.(现在)他一定有辆小汽车。 He must be doing his exercises in the classroom(. 正在进行)他一定在教室里做练习。 He must have finished the work(. 过去发生)他一定已完成了工作。 注:must表示推测时很少用于将来的情况。一般不用He must come tomorrow可. 用It`s certain / I ' m sure that he will come tomorrow. (4)在反意疑问句中,当附属部分含有表示推测意义的must 时,疑问部分的助动词应与must 后面的动词在非推测情况下的用法保持一致。 He must be a worker, isn '(现t h在e?)他准是个工人,是吗? It must have rained last night, didn (过去')t昨it晚? 一定下雨了,是不是?You must havel earned English for many years, haven (完'成t y时ou)? 你一定学了 好多年英语,是吗? 2. can / could的用法

情态动词can和could用法详解

情态动词can 和could 用法详解 can 和could 用法详解 1. 表示能力,could 是can 的过去。如: Can you speak English? 你会说英语吗? Could you speak English then? 那时候你会说英语吗? 2. 表示许可,注意以下用法: (1)对于现在或将来的“许可” ,要区分以下两种情况: a. 表示请求允许(即请求别人允许自己做某事),可用can(=may)或could(=might)(注意:这 里的could 并不表示过去,而是表示现在,只是语气较委婉)。如: Can [May, Could, Might] I come in? 我可以进来吗? b. 表示给予允许(即自己允许别人做某事),一般只用can(=may), 而不能用could或might。如: A: Could [Can] I use your pen? 我可以借用你的钢笔吗? B: Yes, of course you can. 当然可以。(注意: 此处不用Yes, you could) (2)对于过去的“许可” ,也要区分以下两种情况: a. 表示过去一般性允许(即表示某人随时都可以做某事),用can的过去式(即could)。如:When I lived at home, I could watch TV whenever I wanted to. 我住在家里时,想什么时候看电影就可以什么时候看(一般性允许)。 b. 表示过去特定的允许(即表示在过去某一特定情况下允许进行某一活动),则不用could, 而需换成其它表达(如:had permission 或was [were] allowed to)。如: I was allowed to see the film yesterday evening. 昨天晚上允许我去看了电影(特定的允许,所以不能用could)。 3. 表示推测: (1)对现在或将来的推测,can 通常只用于否定句或疑问句中,一般不用于肯定句: It can't be true. 那不可能是真的。 What can they be doing? 他们会在干什么呢? Can it be Jim? 那会是吉姆吗? 但could(可以表示现在)则可用于肯定句中: We could [may, might] go to Guilin this summer. 今年夏天我们可能要去桂林。(将来可能性)You could [may, might] be right, but I don 't think you are. 你可能是对的,但我并不认为你是

相关文档
相关文档 最新文档