Modal Verbs
情态动词
情态动词
?表示说话的语气或情态。情态动词本身有词义，但不完全，不能单独作谓语，必须和动词一起构成谓语。
?情态动词没有人称和数的变化。
?大多数情态动词有过去式。
主要情态动词
?Can
?May
?Will
?Must
?Shall
?Need
?Dare
?Had better
?Would sooner
?Would as soon
?Could
?Might
?Would
?Have to
?Should
?Ought to
?Used to
?Would rather
?might as well
情态动词问题解析:
may be & maybe
?May be （可能是）--- maybe （或许）（副词）
?The news may be true.
?Maybe the news is true.
?She may be waiting for you at home.
?Maybe she is waiting for you at home.
May not & can not
may not 译为“可能不”、“也许不会”而非“不可以”。“不可以”为must not或can…t（不许，不可以）。---May I smoke here?
---No, you mustn?t. /you can?t /you can not.
The news may not be true.
You mustn?t move any of the papers on the desk.
Can & be able to
?Be able to 可以表示更多的时态。
?We will be able to finish the work tomorrow.
?He was not able to realize his greatest ambition.
?Are you able to design a new computer program?
?She has not been able to work out the complex problem.
ought to的否定式
?ought to的否定式是ought not to，疑问句只把ought提前。
?You ought to be responsible for yourself.
?We ought not to look down on disabled people.
?Ought we to count on him for the settlement of the debate?
Must
?Must do
?Must be
?Must have done
Must 的反意疑问句
?I must get up at six, ___？
?She must be in the classroom now, _____?
?They must have had great trouble trying to get there, ____?
用must 提问时的回答
?肯定回答：must
?否定回答：needn?t或don?t /doesn?t have to
?Must I come as early as 6 tomorrow morning?
?Yes, you must.
?No, you needn?t. / No, you don?t have to.
Mustn?t & Needn?t
?Must he arrive very early?
?No, he doesn?t have to / No, he needn?t.
Must & have to
?Must: 主观上认为“必须” 作某事。
?Have to: 受客观情况迫使而“不得不” 作某事
?You must work harder now if you want to find a satisfactory job after graduation. ?Children in remote areas have to quit school simply because their parents cannot afford their education.
?I must help him. {obligation, responsibility}
?I have to help him. {unwillingness)
Must & have to的否定
?否定must 表示“禁止，不允许，一定不要”
?否定don?t have to 表示“不必,不一定非得,不一定要”
?We mustn’t put off the trip no matter what happens.
?We don’t have to put off the trip, although it rains.
Must & have to时态的区别
?Must只用于现在, 而have to则可用于不同时态。用had to表示过去, 用will have to表示将来。
?We had to resort to force in that case.
?We will have to reconsider the whole thing if this plan fails.
?One must have faith in life.
have to
?have to的疑问句和否定句都要用助动词do/does，过去式则用did。
?Do we have to wait for him to start dinner?
?Does he have to show you the tickets to enter the cinema?
?Did I have to do the other task as well?
?You don?t have to come in person.
?She doesn?t have to bring her dictionary.
?We didn?t have to make preparations for the quiz.
Need & dare
?Need & dare 既能作实义动词，又能作情态动词。
?Need & dare在肯定句中，通常为实义动词，后面的不定式要带to，单数第三人称加s，有时态变化。
?Need & dare作情态动词时，多用于否定句和疑问句。
Examples
?She needs to work even harder if she wants to succeed in her study.
?He dares to speak the truth.
?Do you need to take a break?
?They didn?t dare to disobey.
?Need he leave so soon?
?You needn?t have done all the heavy work.
?She dare not go home late at night.
?How dare you say I am unfair?
might as well
?might as well译为“不妨”表示规劝。
?You might as well wait to see what I can do for you.
?You might as well leave now.
?We might as well try a second time to see what?s wrong with the equipment.
be to 可视为情态动词
?be to的三种意义
?①系表结构
?My duty is instruct students on what is wrong and what is right.
?②将来时的特殊表达法
?I was to go back home when the phone called.
?③“应当”“规定是”可视为情态动词–be supposed to
?You are to obey the school rules and regulations.
Would rather
?表意愿：I would rather/sooner not go there on my own.
?表选择：She would rather die than surrender to the enemy.
（句型Would rather do sth. than do sth. else）
?表虚拟：would rather sb. did /didn?t do sth.
?I would rather you didn?t do anything for the time being.
Used to & would
?情态动词used to表“过去常常做”。往往含有“不再如此”之意。
?Would只能表示动作，不能表示状态。而used to都可以。.
?He would ask the teacher some strange questions.
?He used to ask the teacher ……
?He used to be much better off than he is now.
?He would be much …… (wrong)
More Information
?Would侧重叙述过去, 而used to 强调过去和现在的对比。
?Sometimes she would give me some pleasant surprises.
?My mother used to be hot-tempered, but now she is very mild.
情态动词的完成式
needn…t have done
表示过去本不必做的事情
?You needn?t have done all the calculation by yourself. We have computers to do that sort of work.?She needn?t have risen so early. There was no hurry.
?They needn?t have brought so much food with them. We had enough for all the guests.
Must have done
对过去事情的肯定猜测
?He must have worked very hard, for he did a good job in the last exam.
?They must have had a quarrel. They hadn?t talked with each other for nearly a week.?There must have been a blackout. The whole street was in darkness.
can…t/couldn?t have done
对过去事情的否定猜测
?(must have done的否定形式）
?It can?t have been her. She has gone to Shanghai.
?You can?t have seen me in the meeting last week. I was on a business trip then.
?He can?t have worked hard. I have seen him playing with h is neighbors very often.
大学英语语法精解——情态动词 首先让我们分析以下近几年情态动词的考题： 1) This box is too heavy, _________give me a hand?(1998.1) A .would you mind B. would you please C. will you like to D. will you please to 2) Research findings show we spend about two hours dreaming every night , no matter what we ____ during the day.(1999.1) A. should have done B. would have done C. may have done D. must have done 3)It was very kind of you to do the washing-up,but you____ it.(1998.6) A. mustn't have done B. wouldn't have done C. mightn't have done D. didn't have to do 4) If you don't like to swim, you ___ stay at home.(1995.1) A. should as well B. may as well C. can as well D. would as well 5) You ____ him so closely;you should have kept your distance.(2000.6) A. shouldn't follow B. mustn't follow C. couldn't have been following D. shouldn't have been following 6) You ___her in her office last Friday; she's been out of town for two weeks.(1996.1) A. needn't have seen B. must have seen C. might have seen D. can't have seen 7) The room is in a terrible mess; it ____ cleaned.(1996.6) A. can't have been B. shouldn't have been C. mustn't have been D. wouldn't have been 参考答案 1) B 2) C 3) D 4) B 5) D 6) C 7) A 2．情态动词的测试要点 从以上例题可以看出，四级语法对情态动词的测试大体有以下几点。 1）情态动词的基本用法，如①④⑤。 2）情态动词+ 动词的完成形式的用法，如③⑥。 3）情态动词的推测性用法,如⑦。
大学英语四级写作资料 一、大学英语四级考试大纲（2006 修订版）对写作的要求 写作选用考生所熟悉的题材。考生根据规定的题目和所提供的提纲、情景、图片或图表等，写出一篇不少于120词的短文。写作要求是思想表达准确、意义连贯、无严重语法错误。考试时间30分钟。 写作部分要求考生用英语进行短文写作，思想表达准确、意义连贯、无重大语法错误。写作部分考核的技能是： A.思想表达 1.表达中心思想 2.表达重要或特定信息 3.表达观点、态度等 B.篇章组织 4.围绕所给的题目叙述、议论或描述，突出重点 5.连贯地组句成段，组段成篇 C.语言运用 6.运用恰当的词汇 7.运用正确的语法 8.运用合适的句子结构 9.使用正确的标点符号 10.运用衔接手段表达句间关系（如对比、原因、结果、程度、目的等） D.写作格式 11.运用正确的符合英语表达习惯的写作格式 大学英语四级考试写作部分要求考生达到《教学要求》中的一般要求，即“能完成一般性写作任务，能描述个人经历、观感、情感和发生的事件等，能写常见的应用文，能就一般性话题或提纲在半小时内写出至少120词的短文，内容基本完整，用词恰当，语意连贯。能掌握基本的写作技能。” 二、四级考试写作评分标准 （1）本题满分为15分。 （2）阅卷标准共分四等：2分、5分、8分、11分及14分。各有标准样卷1-2份。 （3）阅卷人根据阅卷标准，对照样卷评分，若认为与某一分数（如8分）相似，即定为该分数（即8分）； 若认为稍优或稍劣于该分数，则可以加一分（即9分）或减一分（即7分）。但不得加或减半分。（4）评分标准 ?2分：条理不清，思路紊乱，语言支离破碎或绝大部分句子均有错误，且多数为严重错误。 ?5分：基本切题。思想表达不清楚，连贯性差。有较多的严重语法错误。 ?8分：基本切题。思想表达清楚，文章尚连贯，但语法错误较多，其中有一些是严重错误。 ?11分：切题。思想表达清楚，文字连贯，但有少量语法错误。 ?14分：切题。思想表达清楚，文字通顺，连贯性较好，基本上无语法错误。仅有个别小错误。 ?注：白卷、所写内容与题目毫不相关或只有几个孤立的词而无法表达思想，则给0分。 （5）字数不足应酌情扣分。 题目中给出主题句、起始句和结束句，均不得记入所写字数。 只写一段者：0-4分；只写两段者，0-9分（指规定三段的作文） （6）各档作文相当于百分制的得分，列表如下，称为得分率。其中9分的得分率为60分（相当于百分制的60分）。
英语专业四级语法词汇练习题（6） 所属：专四专八阅读：1021 次评论：7 条[我要评论] [+我要收藏] 有关否定 1)双重否定最常见的形式有： no(not)...but...没有……不…… no(not)...without...没有……不，除……不 no(not)...unless没有……就不…… not...until直到……才…… 例如：There is no one but knows it.没有一个人不知道此事。 2)can not与副词too,enough, sufficiently, over,too much等词连用时，意为“无论怎样也不过分”，“越…越”。例如： You cannot be too careful.你越仔细越好。 We cannot praise him too much.我们无论怎样赞扬他也不过分。 近义词辨析 break, crack, crush, shatter,break, smash 这组词均含有“打破”或“挤碎”的意思。 break 是这组词中最常用的，指使某件东西破碎。 If you break that vase, you’ll have to pay for it.如果打破了那只花瓶，你就得赔偿。crack 指打裂某物，但不一定打碎，因而通常不会成为碎片。 You may crack these nuts with a hammer.你可以用锤子把这些坚果敲开。 crush
强调挤压或踩的动作，毁坏程度取决于被压物的组织结构，或变形，或成小块，或可恢复原状。 To make wine, you first crush the grapes.若要造酒，需先将葡萄压碎。 shatter 打破某物，力大到使碎片飞出很远，常指整件东西完全被毁。 The explosion shattered most of the windows in the building.爆炸震碎了那座大楼 的大部分窗玻璃。smash 突出暴力，击打时动作较猛，被击打的东西往往完全报废。 He smashed the window with a brick.他用砖块击碎窗玻璃。 全真模拟试题 1. ____ native to North America, corn has now spread all over the world. A. In spite of B. That it is C. It was D. Although 2. Our civilization cannot be thought of as ____ in a short period of time. A. to have been created B. to becreated C. having been created D. beingcreated 3. We feel it is high time that the Government ____something to check the inflation. A. did B. do do D. would do 4. It has been proposed that we ____ our decision until the next meeting. C. can delay D. are to delay 5. Hurricanes are severe cyclones with winds over seventy-five miles an hour____ originate over tropical ocean waters. A. which B. who to 6. ____ is announced in the papers, our country has launched a large-scale movement against smuggling and fraudulent activities in foreign currency exchange deals.
一、选择题 1．I see the blackboard. I need to have my glasses. A．can B．can’t C．must D．mustn’t 2．Look at the sign! It says “No Smoking!” You ________ smoke here. It’s dangerous. A．mustn’t B．ought not to C．needn’t D．don’t have to 3．―I didn’t pass the driving test again. ―Don't worry. Just like the weather, life be beautiful all the time. A．can't B．needn't C．shouldn't D．mustn't 4．I’ve bought a nice necklace for Jo’s birthday. She _____like it, but I’m not sure. A．can B．may be C．might D．must 5．The designer has tried every possible way to make the robot light, so you _____ worry about its weight. A．must B．may C．can’t D．needn’t 6．—Is that Kate’s green bike? —It ____________be hers. She likes pink. A．can’t B．could C．mustn’t D．might 7．—________your house be cleaned right now？ —No,it needn't.It may be cleaned this afternoon．（） A．Must B．May C．Can 8．—Jenny, you _________ push your way onto the bus. —I’m really sorry about it. A．mustn’t B．needn’t C．may not 9．From March 23rd, 2013, anyone under the age of 14 ________ go into Disneyland alone. A．couldn’t B．mustn’t C．needn’t D．mightn’t 10．— I wonder if these are Jim's glasses. —They _____his. He doesn't wear glasses. A．might be B．could be C．can't be 11．The milk tastes bad. You’d better_______. A．throw it away B．to throw it away C．throw them away D．to throw them away 12．---You look very pretty, if I say so. ---Thanks a lot for saying that. A．must B．may C．will D．have to 13．He like coffee. I see him drink a cup at times. A．must B．may C．can’t D．mustn’t 14．—Must I go out to have dinner with you, Mum? —No, you , my dear. You’re free to make your own decision. A．shouldn’t B．mustn’t C．needn’t D．can’t
一、选择题 1．— Must I go home? — No, you ________. A．can’t B．mustn’t C．don’t D．needn’t 2．-Listen! A wolf is crying! -It _______ be a wolf, because a wolf never comes out at this time. A．mustn’t B．needn’t C．can’t D．don’t 3．A: Is Jim coming by train? B: I’m not sure. He _______ drive his car. A．must B．may C．need D．should 4．From March 23rd, 2013, anyone under the age of 14 ________ go into Disneyland alone. A．couldn’t B．mustn’t C．needn’t D．mightn’t 5．—______ you please tell me something about the life in Canada or America?—Sorry, I______. I don’t know either. I’m from Australia. A．Could; couldn’t B．Can; couldn’t C．Could; can’t D．Can; mustn’t 6．—Jenny, we buy Mom presents. We can clean the house from top to bottom.—Good idea! It’s a special present for Mother’s Day. A．can’t B．mustn’t C．shouldn’t D．needn’t 7．— May I have some wine? — No, you . You have to drive home later. A．shouldn't B．needn't C．mustn't D．may not 8．—Jack must be in his office, I think. —No, he be in the office. He flew to Canada this morning. A．needn't B．shouldn't C．can't D．mustn't 9．Since the road is muddy,it ________last night, ________? A．must be rained; wasn’t it B．must have rained; didn’t it C．must rained; didn’t it D．must have rained; wasn’t it 10．—Have you heard about the temperature of the earth will rise to 59℃ in 2020?—Don’t worry! The news _______ be true. A．must not B．may not C．needn’t D．will not 11．-_________ you help me with my homework? -Of course if I __________. A．Could; could B．Can't; can C．Could; can D．Can; could 12．—Must we finish the work right now? —No, you ________. You can do it tomorrow. A．needn’t B．shouldn’t C．mustn’t D．can’t 13．— Will Jim come to Yangzhou for a holiday? — He ________come, it depends on how much homework he will have.
最新英语语法情态动词归纳总结 一、单项选择情态动词 1．Mr. Smith is almost on time for everything. How ________ it be that he was late for the meeting? A．can B．should C．may D．must 【答案】A 【解析】 【详解】 考查情态动词辨析。句意：史密斯先生几乎任何事情都是准时的。他怎么可能开会迟到了？ A. can可能，可能性，表示可能性时，常用于否定句和疑问句中，且有时还带有“惊奇、不相信” 等感情色彩。B. should 应该； C. may也许，表示可能性时常用于肯定句中，不用于疑问句中。D.must常用于肯定句中表推测，“一定……”的意思；本题是强调句型的一个变式：强调其特殊疑问句how的形式。根据前句“斯密斯先生几乎是很准时”可推测出“怎么可能开会迟到呢？”。根据句意可知，用于疑问句中的“可能性”且有不相信的色彩，四个选项只有“can”符合题意。故选A 【点睛】 情态动词就是表示说话者对事情的一种看法，也就是一种语气。情态动词的用法一直是命题者常设置的考点和重点，平时要加强记忆。 2．--- 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 【答案】B 【解析】 【详解】 考查情态动词+have done结构。句意：——哦,我的上帝!我刚好错过了回家的末班车。——这是非常糟糕的。我肯定你能赶上，但你就是不抓紧。could have done“本来能做而没有做”。故选B。 3．-- Did Jim come? -- I don’t know. He _______ while I was out. A．might have come B．might come C．must have come D．should have come 【答案】A 【解析】 【详解】 考查情态动词推测用法。句意：Jim来了吗？--我不知道，在我不在的时候，可能来过。根据前文I don’t kn ow.可知，说话者不知道Jim来没来，因此后文推测来过，但是语气很不确定，故可知选A。对过去情况的推测为情态动词+have done，must have done 一定做了某
第一章动词的时与体(Tense & Aspect) 时（tense）是个语法范畴，它是表示时间区别的动词形式。英语动词只有“现在时”和“过去时”，而没有“将来时”（在英语中，表示“将来”手段多种多样，但没有一种独特的、能与“现在时”和“过去时”平起平坐的专一表示“将来”的动词形式----“将来时”）。 体（aspect）也是一个语法范畴，它表示动作或过程在一定时间内处于何种状态的动词形式。英语有进行体(progressive aspect)和完成体(perfective aspect)。进行体是由助动词be的一定形式加主动词的-ing 分词构成；完成体由助动词have的一定形式加主动词的-ed分词构成。 现在时和过去时既可以单独使用，也可以和进行体或完成体结合使用，也可以同时与完成体和进行体结合使用。这样，英语的限定动词词组便有8种时、体形式。它们分别是：一般现在时(simple present)、一般过去时(simple past)、现在进行体(present progressive)、过去进行体(past progressive)、现在完成体(present perfective)、过去完成体(past perfective)、现在完成进行体(present perfective progressive)、过去完成进行体(past perfective progressive)。在这一章中，我们单独挑出完成体来加以详述。 1．1 必须使用完成体的结构 1）It (This, This evening, yesterday...) is (was, will be) first (second, third...) time (day, month…)…结构中的分句，要求用完成体。 Is this the first time you've been to Beijing? This was the first time he had been to Beijing. This is the eighth month that I have been out of work.. This was the eighth month that I had been out of work. This is the second time that the goods produced by our factory have been shown in the International Exhibition. This was the second time that the goods produced by our factory had been shown in the International Exhibition. 2）在no sooner…than, hardly/barely/scarcely…when,等的句型中，主句要用过去完成体。 He had no sooner seen me than he left the room. No sooner had he seen me than he left the room. The helicopter had hardly landed when the waiting crowd ran toward it. Scarcely had I seen the lightning when I heard a clap of thunder. 3）将来完成体用来表示在将来某一时间以前已经完成或一直持续的动作。经常与before+将来时间或by+将来时间连用，也可与before或by the time引导的现在时的分句连用。 I will have finished all the work by the time you are back this evening. I am sure he will have left Paris by this time tomorrow. I hope we will have got all the information before you come tomorrow. By the time you get to New York, I _______for London. （2002年1月） A) would be leaving B) am leaving C) have already left D) shall have left 本题时间状语为by+将来时间，考察将来完成体用法，应选择D)。 By the time he arrives in Beijing, we ________here for two days.（2001年6月） A) have been staying B) have stayed C) shall stay D) will have stayed 将来完成体用来可以表示在将来某一时间以前一直持续的动作，本句话的意思是：我们将在这里呆两天，因此谓语动词用将来完成体，答案为D)。 1．2 现在完成体与现在完成进行体 现在完成进行体兼有现在完成体和现在进行体二者基本特点。由于它有现在完成体的特点，所以它
初中英语语法情态动词专项练习 Exercise I ? ( ) 1 John___ come to see us tonight, but he isn't very sure yet. A. may B. can C. has to D. must ( ) 2 They ___ do well in the exam. A. can be able to B. be able to C. can able to D. are able to ( ) 3 -May I take this book out? -No, you___. A. can't B. may not C. needn't D. aren't ( ) 4 You___ go and see a doctor at once because you're got a fever. A. can B. must C. dare D. would ( ) 5 -Can you speak Japanese? -No, I____. A. mustn't B. can't C. needn't D. may not ?? ( ) 1 -He___ be in the classroom, I think. -No, he ___ be in the classroom. I saw him go home a minute ago. A. can; may not B. must; may not C. may; can't D. may; mustn't ( ) 2 -Shall I get one more cake for you, Dad? -Thanks, but you___, I've had enough. A. may not B. must not C. can't D. needn't ( ) 3 Even the top students in our class can't work out this problem, so it be very difficult. A. may B. must C. can D. need ( ) 4 He isn't at school. I think he ___ be ill. A. can B. shall C. must D. has to ( ) 5 ___ I take this one? A. May B. Will C. Are D. Do ??? ( ) 1 The children___ play football on the road. A. can't B. can C. mustn't D. must ( ) 2 You ___ be late for school again next time. A. mustn't B. needn't C. don't have to D. don't need to ( ) 3 -Must I do my homework at once? -No, you___. A. needn't B. mustn't C. can't D. may not ???? ( ) 1 His arm is all right. He___ go and see the doctor. A. has not to B. don't have to C. haven't to D. doesn't have to ( ) 2 He had to give up the plan, ___ he? A. did B. didn't C. does D. doesn't ( ) 3 They had to walk here, ___ they? A. mustn't B. did C. didn't D. hadn't ????? ( ) 1 He had better stay here, ___ he? A. didn't B. don't C. hadn't D. isn't ( ) 2 You'd better___late next time. A. not to be B. not be C. won't be D. don't be ( ) 3 You'd better ___ your hair ___ once a month. A. had; cut B. had; cutted C. have; cut D. have; cutted ( ) 4 You___ ask that man over there. Maybe he knows the way. A. had better not to B. had not better C. had better D. had better not ?????? ( ) 1 -Shall we go and visit the History Museum next Sunday? A. Here you are B. Sorry, I can't C. Yes, please D. Let me try
大学英语四级常考语法总结 一、虚拟语气。应着重复习能引起虚拟语气的某些介词、介词短语和连词(如lest, in case, otherwise等);一部分表示建议、主张、命令等概念的词语，由于本身隐含说话人的主观愿望，其后的主语从句、宾语从句、同位语从句往往采用“should+动词原形”;虚拟倒装句;在would rather, wish, as if, it’s time that等句型中使用适当形式表达主观愿望;混合虚拟句。 二、独立主格题。一般说来，在句子中没有连接词的情况下，逗号是无力连接两个句子的，其中一个分句要么是非谓语形式，要么是独立主格结构。两种结构都做状语，不同的是独立主格结构有自己的逻辑主语。 三、时态。英语中共有16个时态。四级考试中出现最多的是将来完成时、现在完成时、过去完成时和完成进行时。 四、名词性从句。形容词性的定语从句是考核的重点，用什么引导词，引导词前面的介词形式，引导词在从句中做什么成分，从句的语序等均有可能成为考点。此外，主语从句、同位语从句、宾语从句也应适当复习。 五、主谓一致。这类考题灵活性大，需要根据实际情况判断谓语动词的单复数形式。一部分具有生命意义的集合名词做主语时谓语动词多采用复数形式，如people, poultry, militia等;用and连接的成分表单一概念时谓语动词用单数;就近原则：主语中含有某些连词(如as well as, besides, in addition to等)时，谓语动词的数同第一个主语保持一致。
六、倒装结构。分为全部倒装和部分倒装。那些否定词(组)、介词短语能引起倒装句，部分倒装和全部倒装有和区别，as在倒装结构中的用法及意义等等，都是考生应当重视的地方。 七、非谓语动词。①根据非谓语动词同其所修饰的名词或逻辑主语的一致关系，确定使用主动语态或被动语态，然后考虑采用现在分词、现在分词被动式或过去分词;②非谓语动词同主句谓语动词动作发生的先后关系。动作正在进行的用现在分词进行式，同时发生或不分先后发生的用现在现在分词一般式或过去分词;在主句谓语动词之前发生的用现在分词完成式、不定式完成式;发生在主句谓语动词之后的多用不定式一般式;③表状态多用分词，表目的多用不定式。
Exercise for Subject-verb Concord 1. Which of the following sentences is incorrect A. His sister rather than his parents is at home now. B. Every boy and every girl are excited to hear the news. C. His thanks were really sincere. D. Either Jack or John knows the truth. 2. Which of the following sentences is incorrect A. Poultry are very expensive in the city. B. New machinery were introduced in the factory. C. The police are investigating the murder case. D. The militia were called out to rescue flood victims. 3. Which of the following sentences is grammatically incorrect A. Politics are the art or science of government. B. Ten miles seems like a long walk to me. C. Mumps is a kind of infectious disease. D. All the furniture has arrived undamaged. 4. Which of the following sentences is grammatically incorrect A. Physics is an important school subject. B. The United States borders Canada. C. The Niagara Falls is in North America. D. Mumps is a kind of infectious disease. 5. Which of the following sentences is incorrect A. Only one out of six were present at the meeting. B. Ten dollars was stolen from the cash register. C. Either my sister or my brother is coming. D. Five miles seem like a long walk to me. 6. Which of the following sentences is grammatically incorrect A. John, rather than his roommates, is to blame. B. Either Tina or Carol are sure to know the answer. C. Three pints is not enough to get him drunk. D. Forty-five percent of the doctors were woman. 7. Which of the following sentences is grammatically incorrect A. This pair of trousers costs fifty dollars. B. Either my grandsons or their father is coming. C. The British police has only very limited powers. D. A committee of twelve men is to discuss the matter. 8. All President’s Men one of the important books for scholars who study the Watergate Scandal. A.remains B. remained C. remain D. remaining 9. Two years a long time for a patient who has to lie in bed, and do nothing. A. are B. is C. were D. was Answers: 1-5 b b a c d 6-9 b c a b
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 有can (could), may (might), must, have to, shall (should, will (would), dare (dared), need (needed), ought to等。情态动词无人称和数的变化；不能单独使用，必须与其后的动词原形构成谓语。 情态动词 句和疑问句中表示请求，允许，意为“能够” could 是can 的过去式，意为“能、会”，表示过去的水平在疑问句中表示委婉请求 may 表示请求、许可，意为“能够”表示推测，常用于肯定句中，意为“可能、也许” might 是may的过去式,表推测，常用于肯定句中，意为“可能、也许”must 表示主观看法，意为“必须、应该”表有把握的推测，用语肯定句dare 表示敢于，主要用于否定句和疑问句中 should 意为“应该”，表示要求和命令表示劝告、建议 had better 意为“最好”，表示建议 used to意为“过去常常，表示过去的动作、行为 考点一情态动词知识清单 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，另外情态动词没哟人称和数的变化，情态动词后必须跟动词原形。 1. can 的用法 （1）表示水平、许可、可能性。表示水平时一般译为“能、会”，即有种水平，尤其是生来具备的水平，此时may 和must 均不可代替它。（2）表示可能、能够。如：I can finish it in an hour. （3）表示许可，常在口语中。如：You can use my dictionary. （4）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”。 2.could的用法 （1）can的过去式，意为“能、会”，表示过去的水平。 （2）could 在疑问句中，表示委婉的语气，此时没有过去式的意思。 3.may的用法 （1）表示请求、许可，比can 正式， （2）表示推测，谈论可能性，意为“可能，或许”，一般用于肯定句中。 （3）may的过去式为might ，表示推测时。可能性低于may 。 4. must的用法 （1）must 表示主观看法，意为“必须、一定”。 （2）其否定形式mustn’t表示“一定不要”“千万别”“禁止, 不许”.（3）对must引导的疑问句，肯定回答为must，否定回答为needn’t或don’t have to . （4）must 表示有把握的推测，用于肯定句。当must 表示肯定的判断、推测时，其反意疑问句要用实际问句的助动词来构成。 She must have finished writing, hasn’t she? 5. need的用法 （1）need 表示需要、必须，主要用于否定句和疑问句中，其否定形式为needn’t，意为“没有必要，不必”。用need 提问时，肯定回答为must，否定回答为needn’t。如：----Need I stay here any longer? ----Yes, you must .-----No. you needn’t . (2) need 还能够作实义动词，此时有人称、数和时态的变化，后边多接动词不定式。 6. dare 的用法dare意为“敢、敢于”,用法近似于need，有两种词性： （1）dare 作为情态动词，多用于否定句、疑问句或条件句中，无第三人称单数形式，只有一般现在时和一般过去时。 （2）dare 作为实义动词，此时有人称、数即时态的变化。注意：在口语中，dare 的各种形式常与不带to 的不定式连用。Do you dare tell her what I said? 7. shall 的用法 （1）shall 表示征求对方意见（多用于第一、三人称）， Shall we go out for a walk? （2）表示决心、警告、命令（多用于第二、三人称）， No one shall bring your beepers or mobile phones in the exam. 8. should的用法 （1） should 意为“应该”，可表示劝告、建议、义务、责任等。We should protect the environment. （2） should (would)like to do sth. 表示“想要、愿意做某事”，常用于口语中。Would you like to go with me? 你想和我一起去吗？ （3）Should have done 表示对过去动作的责备、批评。 You should have finished your homework. 9. will 的用法 will表示意愿、意志、打算，可用于多种人称。 I will help you if I’m free this afternoon. 10. had better 的用法 had better 意为“最好”，没有人称的变化，后面接不带to 的不定式，其否定形式为：had better not。 We had better go now. You had better not give the book to him. 考点二含有情态动词的疑问句 1. 由can、may、must构成的疑问句 （1）句式：Can/ May/ Must…+ 主语+动词原形+….？如：Can you repair the car? Could he be a good student? May I borrow your ruler?Must we clean the room now? （2）对may 引出的问句，能够有下列回答方式：Yes, of course. Yes, certainly.Sure.No, you mustn’t.No, you can’t. （3）对must引出的疑问句，回答为：Yes, …must.No,…needn’t/don’t have to. 2. will，would，shall 的用法 （1）will 在一般疑问句中表示客气的“请求、劝说”。would 是will 的过去式，语气更加客气、委婉。Would you show me your picture book? Will you please give me a call? （2）对will/ would you…的回答方式有以下几种：Yes, I will. (No, I won’t.)Sure . (I’m sorry , I can’t.)All right.Certainly. (No, thank you .) Yes, please. （3）shall引出的疑问句用于第一人称，表示征求对方意见或客气的请求。其回答方式有以下几种：Yes, please.All right. No, thank you. 考点三不同情态动词的否定意义也不同 1. （1）can’t可译为“不会”，如：I can’t play basketball. 我不会打篮球。（2）当句子表推测时，用can’t表达不可能，He can’t be ill. He is playing chess with Tom.（3）can’t还可用来回答“ May I …?”这样的问句。May I come in ?No, you mustn’t. / can’t.（4）can’t还可用于固定习语中。She can’t help crying. 2.may 的否定式为may not ，译成“可能不”，He may not be at home. 3.（1）mustn’t表示不许，不可。He mustn’t leave his room.