Ⅰ.单句语法填空
1．(2015·重庆高考)You________be Carol.You haven't changed a bit after all these years.
2．(2015·陕西高考)Ellen is a fantastic dancer.I wish I________(dance)as well as her.
3．But for the rain，we________(have)a pleasant journey.
4．(2015·安徽高中联考)We are now in Senior Three.I think it's time we________(make)more efforts for the college entrance exam.
5．You________get the machine repaired this week.I won't need it until next month.
6．(2015·南通三调)My parents are talking about their school days as if they________(be)back at school.
7．I don't think young children should be allowed to play such violent games—they________get hurt easily.
8．It is proposed that the plan________(delay)because of the bad weather.
9．—The second－hand car on sale then was a real bargain.
—I agree.If only I________(buy)it.
10．(2015·海淀期末)No reader________take a book out of the library without permission of the librarian.
答案：1.must解析：考查情态动词。句意：你一定是Carol。这么多年来你一点儿没变。依据第二句可知，此处应用must表示很有把握的推测，意为“一定，肯定”，只用于肯定句。
2．danced解析：考查虚拟语气。句意：Ellen是一个极出色的舞者。我希望我能够跳得和她一样好。动词wish后的宾语从句中常
用虚拟语气。再根据句意可知，此处表示对现在情况的一种假设，所以从句中的谓语动词要用过去式。
3．would have had解析：考查虚拟语气。句意：要不是下雨，我们的旅途会很愉快的。本句为与过去事实相反的假设，故填would have had。
4．made/should make解析：考查虚拟语气。句意：我们如今都高三了。我认为我们该更加努力备战高考了。It is time＋(that)从句，that从句的谓语动词需为“动词过去式”或“should＋动词原形”。
5．needn't解析：考查情态动词。句意：这周你不必请人修这台机器。到下个月我才用。根据题干中“I won't need it until next month”可推知空处表示“不必”。故填needn't。
6．were解析：考查虚拟语气。根据主句中的“are talking”可知，as if引导的从句中应用与现在事实相反的虚拟语气，所以填were。
7．might/may解析：考查情态动词。由语境“这样暴力的游戏不应该让小孩子玩”可推断出，“他们有可能很容易受到伤害”，故填might/may，表示“可能”。
8．(should) be delayed解析：考查虚拟语气。在“It is/was proposed/suggested/decided/required that...”句型中，that后从句谓语动词用“(should)＋动词原形”。又因为the plan与delay是逻辑上的动宾关系，需用被动语态。故填(should) be delayed。
9．had bought解析：考查虚拟语气。句意：——当时出售的二手车非常便宜。——我同意，要是我当时买下来就好了。if only 意思是“要是……就好了”，此处表示与过去事实相反，应用过去完成时，故填had bought。
10．shall解析：考查情态动词。句意：未经图书管理员允许，任何读者不得将书带出图书馆。shall用于第二、三人称表示命令、威胁、许诺、警告等语气，符合句意。
Ⅱ.单句改错
1．(2015·江苏高考单项填空)It might have saved me some trouble have I known the schedule.________
2．(2015·安徽高考单项填空)It is lucky we booked a room，or we will have nowhere to stay now.________
3．(2015·四川高考单项填空)You need be careful with the camera.It costs！________
4．(2015·重庆高考单项填空)Without his wartime experiences，Hemingway wouldn't write his famous novel A Fare w ell to Arms.________
5．(2015·天津高考单项填空)I shouldn't have worried before I came to the new school，for my classmates here are very friendly to me.________
答案：1.trouble后的have→had 2.will→would 3.need→must 4.write→have written 5.shouldn't→needn't
Ⅲ.语法填空
Computers and Internet networking are common in the American workplace.They play increasingly important roles 1.________children's education，communication with friends and family，and entertainment.Every aspect of modern life 2.________(affect)by computers，and developing digital information literacy(读写能力)is 3.________ (essence) in the 21st century.
Computer education is 4.________(especial)key to students，
虚拟语气的用法及专项练习题 虚拟语气表示一种假设的情况，或一种主观的愿望，即动词所表示的动 作或状态并非事实，或不可能实现。英语虚拟语气的形式有下列几种： 一.虚拟语气用于条件状语从句 注意:主句中的should 通常用于第一人称,would 可用于任何人称,同时 也可根据意思用情态动词could,might 等代替should,would 。 If I were you, I would give up drinking immediately. country. 3.与将来事实相反 If it were to/should rain tomorrow,the meeting would be put off. If you went there next time, you would see what I mean. 4.错综时间虚拟语气 当条件状语从句表示的行为和主句表示的行为所发生的时间不一致时,动 词的形式要根据它所表示的时间来调整。例如: If I were you, I would have gone home.
If you had followed the doctor's advice,you would be quite all right now.(从句说的是过去,主句指的是现在。) If the weather had been more favorable ,the crops would be growing still better. 状语从句 1. 方式状语as if(as though) 如果从句表示与现在事实相反,谓语动词用一般过去时;表示与过去事实相反,谓语动词用"had+过去分词";表示与将来事实相反,谓语动词用"would(might,could)+动词原形"。例如: He looks at me as if I were mad. He spoke English so fluently as if he had studied English in England. 但as if(as though)后的从句也常用陈述语气,这是因为从句中的情况往往是可能发生的或可能被设想为真实的。例如: It looks as if our side is going to win. 2.目的状语in order that,so that 从句谓语动词用" may/might,can/could)+动词原形"。例如: She listened carefully in order that she might discover exactly what he wanted. 3. 连词引导的条件状语从句: in case , unless ,supposing ,providing,on condition that从句谓语动词用(should)或" might, could)+动词原形"。 4. 连词引导的步状语从句: lest ,for fear that等 We hid behind some bushes for fear that passer-by should see us. 二.虚拟语气用于宾语从句 注意：在此结构中that不可省略；should省不省均可。 He suggested that they (should ) stop smoking. They demanded that the black people should be treated as well as white people. 如果that 引导的从句所表达的内容是事实，也可用陈述语气。 He insists that he is right.
情态动词与虚拟语气 【语法要点】 情态动词 所谓情态动词是指它含有一定的含义，可以表达某种感情和说话的语气，但是它不可以单独使用作谓语动词。学习情态动词主要学习英语国家的语言习惯和表达法，特别是在口语中不要过分追求原理，更不要不根据说话场合而进行推理，编造出一些语法结构正确的中文式英语。 一、情态动词的类型 1.只作情态动词的有：must、can、could、may、might、ought to 2.既可作情态动词又可作实义动词的有：need、dare 3.既可作情态动词又可作助动词的有：shall、should、will、would 二、情态动词的特征 1.表示说话人的情感态度，不能单独作谓语，与行为动词或连系动词一起作谓语。 2.情态动词没有人称和数的变化，后接动词原形。 3.具有助动词的特征：可用来构成否定句、疑问句或简短答语。 三、情态动词的用法 1.表示能力 （1）表示现在的能力，用can或be able to。表示一般的能力时多用can，表示“经过努力成功的做成某事”用be able to。 （2）表示过去的能力，用could或was/were be able to。区别同上。 （3）表示将来的能力，用will be able to。 2.表示推测、可能性 （1）can用在肯定句中表示客观的可能性，而不表示具体事情实际发生的可能性。 例如：Accidents can happy on such rainy days. （2）表示具体事情实际发生的可能性的情态动词，其表示可能性的层次如下表： 情态动词肯定式否定式疑问式 must 必定、必然、一定 will 很可能、大概不会、不该会……吗？ would 可能性较will小不会、不该（较won’t弱）会……吗？（较will弱） should 应该会、理应（表示合乎理想的情况或结果） ought to 与should同义 can 一定不会、不可能（否定推测）有可能吗？ could 可疑的可能不可能（与can’t同义）有可能吗？（较can弱）may 或许、可能、说不定可能不 might 或许、可能（较may弱）可能不（较may not弱） 注意→（1）may，must常用于肯定句，一般不用于否定句和疑问句。 （2）can常用于否定句，疑问句和感叹句中，表示疑惑、惊讶或不相信等意思。could既可用于肯定句，又可用于否定句、疑问句中。
一、选择题 1．If I you, I would rather at home and watch TV than to the party. A．was；stay, go B．am；stay, go C．were；to stay, go D．were；stay, go 2．If I ___ you, I ___ be afraid . A．was, wouldn’t B．were, won’t C．were, wouldn’t 3．If I ______ you, I _____the job. A．was; will take B．was; would take C．were; would take D．were; will take 4．– I coughed a lot last night. What should I do? – If I _____ you, I would go to see the doctor at once. A．am B．were C．was 5．If I _____ you ,I _____ them the story. A. was , tell B．were , will tell C．were ,wou ld tell D．am. would tell 6．---What if I have to go there and know nothing about it? --- If I______ you, I would try to find some information about it on the Internet. A．am B．was C．will be D．were 7．----What can I do with so much money? ----If I _______ you, I _______ give it away to charity. A．am, will B．am, would C．were, would D．was, would 8．If I ____ you, I ____ buy a bike for him. A．was, would B．was, could C．were, would D．were, could 9．If his brother a millionaire（百万富翁）, he'd buy her sister the expensive car. A．was B．were C．is D．be 10．If I ________ invited tonight, I would go to the dinner party. A．was B．were C．am D．is 11．If I______you, I_______go there at once. A．am, would B．were, would C．were, will D．am, will 12．—I like drinking wine. But people who drink wine aren’t allowed to drive. —If I you, I would give up wine. A．were; drinking B．am; drinking C．were; drink D．was;to drink 13．– What would you do if you ______ a car accident? – I will call the police. A．met B．meet C．were meeting 14．—He suggests that his friend _________ to Beijing right now. —I think it’s a good ________.
虚拟语气专项练习经典 一、初中英语虚拟语气 1．–I argued with my best friend. What should I do? --If I ________ you, I would say sorry to her. A．am B．was C．are D．were 【答案】D 【解析】试题分析：句意：我和我最好的朋友吵架了。我该怎么办？如果我是你，我就对她说对不起。虚拟语气用来表示说话人的主观愿望或假想，所说的是一个条件，不一定是事实，或与事实相反。在虚拟条件语气句中，表示与现在事实相反的事实，条件从句中的谓语动词用过去式（be用were不用was），主句谓语动词为“would+原形动词”，所以选D。 考点：考查虚拟语气。 2．If I not so busy ,I with you . A．was , would go B．were , would go C．was , should go D．were , will go 【答案】B 【解析】句意“如果我不忙，我就跟你去”。本题考查对将来的虚拟语气。即“if+过去时，主语+should/would/could/might do”结构。故选B。 点睛： 3．If I ___ you, I ___ be afraid . A．was, wouldn’t B．were, won’t C．were, wouldn’t 【答案】C 【解析】 试题分析：根据语境可知此句的含义是如果我是你，我就不害怕。考查的是虚拟语气的基本用法。条件用过去时，主句要用过去将来时，故选C。 考点：虚拟语气 点评：虚拟语气其实就是if引导条件状语从句时，词义为“如果”，不过这个条件是无法实
专题六情态动词和虚拟语气 1.【2015·北京】29．—Can’t you stay a little longer? —It’s getting late. I really _____go now, My daughter is home alone. A .may B .can C . must D .dare 【答案】C 【解析】 试题分析：句意：——你不能再多待会儿吗?——很晚了，我必须得走了.我女儿一个人在家.A. may可能，可以，也许；B. can能，会；C. must必须，必然要，必定会；D. dare敢，胆敢.结合句意，故选C. 【考点定位】考查情态动词辨析 【名师点睛】本题是考查情态动词，这里考查的是语气的强度，在这里结合语境是“一定”的意思，所以要做好此类辨析题需掌握情态动词选项的语气并结合语境. 2.【2015·北京】34. If I _____it with my own eyes ,I wouldn’t have believed it. A . didn’t see B. weren’t seeing C. wouldn’t see D. hadn’t seen 【答案】D 【解析】 试题分析：句意：如果不是我亲眼看到，我不会相信.根据后半句wouldn’t have believed 可以判断是对过去的虚拟.所以从句是if+主语+ had+done的形式.故选D. 【考点定位】虚拟语气 【名师点睛】条件句中有if引导时,首先要根据句意和句子结构判断是真实条件句还是虚拟条件句,如果符合虚拟的结构,就可以根据句子中的时间和语意判断应该用哪种虚拟语气. 3.【2015·重庆】7. Without his wartime experiences, Hemingway____ his famous novel A Farewell to Arms. A.d idn’t write B. hadn’t written C. wouldn’t write D. wouldn’t have written 【答案】D 【解析】 试题分析：句意：没有他战时的经验，海明威就不可能写出著名的小说永别了武器.根据without his wartime experience没有战时的经历，可知表示对于过去的否定猜测，故主句
@ 情态动词和虚拟语气 1. Jack descried his father, who ________a brave boy many years ago, as a strong-wiled man A. would be B. would have been C. must be D. must have been ） 2. —Good morning. I've got an appointment with Miss Smith in the Personnel Department. —Ah, good morning. You _______ be Mrs. Peters. A. might B. must C. would D. can recommend parents _______ their children under 12 to ride bicycles to school for safety. ~ A. not allow B. do not allow C. mustn’t allow D. couldn’t allow 4. You_______ buy a gift, but you can if you want to. A. must B. mustn't C. have to D. don't have to 5. —I haven’t got the reference book yet, but I’ll have a test on the subject next month. —Don’t worry. You________ have it by Friday. A. could B. shall C. must D. may w_w w. k#s 6. I have told you the truth I keep repeating it A. Must B. Can C. May D. Will ~ 7. Doctors say that exercise is important for health, but it _______ be regular exercise. A. can B. will C. must D. may 8. Just be patient. You ________ expect the world to change so soon. A. can’t B. needn’t C. may not D. will not 9. I’m afraid Mr. Harding ________ see you now. He’s busy. A. can’t B. mustn’t C. shouldn’t D. needn’t 10. I _______ have watched that movie—it’ll give me horrible dreams. A. shouldn’t B. needn’t C. couldn’t D. mustn’t < 11. –May I take this book out of the reading room –No, you . You read it in here. A. mightn’t B. won’t C. needn’t D. mustn’t 12. —Sorry, Professor Smith. I didn't finish the assignment yesterday. — Oh, you _________ have done it as yesterday was the deadline. A. must B. mustn't C. should D. shouldn't 13. — _______ I take the book out —I'm afraid not. *
高考虚拟语气专项练习60 题 1. If only he ____quietly as the doctor instructed, he would not suffer so much now. A. lies B. lay C. had lain D. should lie 2. How I wish every family ____a large house with a beautiful garden. A. has B. had C. will have D. had had 3. You did not let me drive. If we ____in turn, you ____ so tired A. drove; didn ’t get B. drove; wouldn ’t get C. were driving; wouldn ’t get D. had driven ; wouldn ’t have got 4. _____it rain tomorrow, we would have to put off the visit to the Yangpu Bridge A. Were B. Should C. Would D. Will 5. I suggested the person _____ to be put into prison A. refers B. referring C. referred D. refer 6. When a pencil is partly in a glass of water, it looks as if it____ A. breaks B. has broken C. were broken D. had been broken 7. I insisted _____to see a doctor, but he insisted nothing ___ wrong with him A. on him to go; should be B. he went; be C. he go; was D. he should to; is 8. ---Your aunt invites you to the movies today ---I would rather she ____ me tomorrow than today A. tells B. told C. would tell D. had told 9. ---Would you have called her up ? ---Yes, but I ____busy doing my homework A. was B. were C. had been D. would be 10. I was ill that day, otherwise I ____ the sports meet A. would have taken part in B. took part in C. had taken part in D. would take part in 11. ___the clouds, you would find the airplane in the sky easily A. Had it not been for B. If it were not C. If it had not been for D. Were it not for 12. If my lawyer ____here last Sunday, he ____ me from going A. had been, would have prevented B. had been, would prevent C. were, prevent D. were, would have prevented 13. ____hard, he would have passed the exam A. If he were to work B. Had he worked C. Should he work D. Were he to work 14. ____today, he would get there by Friday A. Were he to leave B. If he had left C. Did he to leave D. Had he left 15. Had you listened to the doctor, you ____all right now A. are B. were C. would be D. would have been 16. I did not see your sister at the meeting. If she ____, she would have met my brother A. has come B. did come C. come D. had come 17. He ____busy yesterday, or he ___you with your experiment. A. was, had helped B. was, would have helped C. had been, would have helped D. were, would have helped 18. If it ____for the snow, we____ the mountain yesterday
复习专题虚拟语气专项练习题及答案 一、初中英语虚拟语气 1．–I argued with my best friend. What should I do? --If I ________ you, I would say sorry to her. A．am B．was C．are D．were 【答案】D 【解析】试题分析：句意：我和我最好的朋友吵架了。我该怎么办？如果我是你，我就对她说对不起。虚拟语气用来表示说话人的主观愿望或假想，所说的是一个条件，不一定是事实，或与事实相反。在虚拟条件语气句中，表示与现在事实相反的事实，条件从句中的谓语动词用过去式（be用were不用was），主句谓语动词为“would+原形动词”，所以选D。 考点：考查虚拟语气。 2．If I you, I give it to Microsoft research. A．am, will B．am, would C．were, would D．was, would 【答案】C 【解析】 【详解】 句意：如果我是你，我会把它交给微软研究部。 考查虚拟语气。根据If I you，这是一个虚拟语气，此句虚拟语气表示一种不能实现的假设，即与现在事实相反，谓语动词用过去式；该语法主要用于if条件状语从句，本句“如果我是你”，be动词用were，后面主句用过去将来时would＋动词原形，故答案选C。 3．I suggest that we Chinese people_______Chinese culture with love and joy everywhere we go. A．spread B．spreading C．to spread D．will spread 【答案】A 【解析】 【详解】 句意：我建议我们中国人无论走到哪里都要带着爱心和欢乐来传播中国文化， 考查动词suggest后跟虚拟语气。spread是动词原形；spreading是动名词；to spread是动词不定式；will spread是一般将来时。动词在这里suggest表示建议，后面宾语从句中使用虚拟语气should+动词原形，should可以省略。根据句意说明本句的suggest表示建议，故后面使用虚拟语气，省略了should，故选A。 【点睛】 动词suggest 后面可以跟名词作宾语，用于句型“suggest sth.”。如：I suggested a visit. 我提议参观。 suggest 后跟动名词作宾语，如：He suggested going home. 他提议回家。 suggest后面跟that引导的宾语从句时，用虚拟语气，一般省略情态动词should，所以本题选项是A。
Subjunctive mood (P122, p. 129. P 143 动词过去完成体P181-190, 395)条件句 14. “I wondered if I could have a word with you.” The past tense in the sentence refers to a __B___. (p128) 2017 A. past event for exact time reference B. present event for tentativeness C. present event for uncertainty D. past event for politeness V. in specific contexts, the simple past can also denote the present or the future time. There are two uses. One is known as the attitudinal past (属于“表态性过去时” (attitudinal past), 即表示说话人当前的试探性态度, 而非过去时间, 多用于表示意愿或心理状态的动词) , that is , the past tense is associated with the present time in independent clauses expressing a question, request or suggestion. Its effect is to make the question/request/suggestion less direct, implying a polite, somewhat tentative attitude试探性态度，婉转语气on the part of the speaker. A: Did you want me? B.Yes, I wondered if you could give me some help . Want, wonder, think, hope
外研版英语虚拟语气专项练习题及答案 一、初中英语虚拟语气 1． If I _______ you , I _______ do that . A．was , would B．were ; wouldn’t C．am , won’t D．were , won’t 【答案】D 【解析】试题分析：句意：如果我是你，我不会那样做。本句是与现在事实相反的虚拟条件句，从句谓语用动词用过去式（be动词一般用were）；主句用should （would,could,might）+ 动词原形。故选D。 考点：虚拟条件句。 2．If I _____ you ,I _____ them the story. A. was , tell B．were , will tell C．were ,wou ld tell D．am. would tell 【答案】C 【解析】 试题分析：句意：如果我是你，我会告诉他们这个故事。本题考查虚拟语气，if 从句中用一般过去时，主句中用would +动词原形，表示与现在的事实相反。故选C。 考点：考查虚拟语气的用法。 3． I________ a big house for my family if I _____ a lot of money． A．would buy, have B．would buy, had C．will buy; had D．will buy, will have 【答案】B 【解析】 试题分析：句意：如果我有很多钱，我要给家人买个大大的房子。句子用虚拟语气，所以动词用过去式，would，had，故选B。 考点：考查虚拟语气。 4．If I______ you, I would take a small present.. A．am B．was C．were D．are 【答案】C 【解析】 试题分析：句意：如果我我你，我会那个小的礼物。句中用虚拟语气，系动词用were，故选C。 考点：考查虚拟语气。 5．If I _____ one million dollars, I________ travel around the world with my parents. A．have; will B．had; will C．had; will D．had; would 【答案】D
虚拟语气讲解 语气(mood) 是一种动词形式，用以表示说话者的意图或态度。 英语中的语气有三种：陈述语气、祈使语气和虚拟语气。 直陈语气(indicative mood),表示所说的话是事实。 祈使语气(imperative mood),表示所说的话是请求或命令。 虚拟语气(subjunctive mood),表示说的话不是事实，或者是不可能发生的情况，而是一种愿望、建议或与事实相反的假设等。 一. 虚拟语气在条件句中的应用 学习虚拟语气在条件句中的用法之前我们必须清楚条件句的种类：条件句有真实条件句与非真实条件句(或称虚拟条件句)两种。真实条件句所表的假设是可能发生或实现的，句中的条件从句与结果主句都用陈述语气。 如：If it doesn’t rain tomorrow, I will go for a picnic. 假若明天不下雨，我就去野餐。 Oil floats if you pour it on water. 你如把油倒在水里，油就浮起来。 虚拟条件句所表的假设则是不可能或不大可能发生或实现的，句中的条件从句与结果主句皆须用虚拟语气。 1. 与现在事实相反的虚拟条件句，条件从句的谓语用动词的过去式(be的过去式用were), 主句的谓语用should （would, might，could）+动词原形。 如：If it were not raining, we should go for a picnic.如果现在不下雨的话，我们就出去野餐了。 （事实是：天在下雨，我们不能出去野餐。表示愿望。） If he came here, he might be able to help you. 如果他来这，他就能够帮助你了。 （事实是：他没来这，他不可能帮助你。表示对他的良好印象。）
谓语动词(情态动词、虚拟语气) 要点一情态动词的基本用法 【温馨提示】can有时也用于肯定句,表示理论上的可能性或一时的情况。常译为“有时会”。 2.may,might 【温馨提示】may表示请求许可时,其否定回答一般用mustn’t。may not意为“可能不”,而can’t意为“不可能”。 【温馨提示】would表示过去的习惯时仅指动作,而且不与现在作对比;used to表示过去的习惯动作或状态,而且与现在作对比,说明现在这种动作或状态已经不存在。 4.shall,should,ought to
5.must,have to 【温馨提示】 (1)在回答must 的问句时,否定回答通常用 needn ’t 或don ’t have to 。(2) mustn ’t 表示“禁止;不许”;而don ’t have to 表示“不必”。(3) must 只有一种形式,而have to 有人称、时态的变化。 7.dare 的用法 【温馨提示】 (1)dare 用作情态动词有dare,dared 两种形式。 (2)dare 用作实义动词,后接不定式,不定式符号to 可省去,但dare 以动词-ing 形式出现时,不定式符号to 不能省略。 要点二 “情态动词+have done ”的用法 1.must have done 表示对过去已发生的事情进行肯定的推断,只用于肯定句中,意为“一定,必定”,其否定形式为:can ’t/cannot have done 。 It must have rained last night,for the road was quite wet. 昨晚肯定下雨了,因为路面十分潮湿。 I saw Mr Wang just now.He can ’t have gone abroad. 刚刚我还看见王先生了,他不可能已经出国了。 2.could have done 意为“本来可以……,本来能够……”,表示虚拟语气。 You could have made greater progress,but you didn ’t try your best. 你本来可以取得更大的进步,但是你没有努力。 3.may/might have done 表示对过去已发生的事情进行推断,意为“可能/或许已经……”。其否定形式为: may/might not have done 意为“可能没有做……”。 It ’s no use going to his house.He may not have gone home.He may have gone somewhere else. 去他家没用。 他可能没有回家,可能已经去了别的地方。 4.should/ought to have done 表示本应该做某事,却没有做,含有责备或后悔之意。其否定形式为should not/ought not to have done 表示“本不该做某事却做了”。
要点一情态动词的基本用法 ,could 【温馨提示】 can有时也用于肯定句,表示理论上的可能性或一时的情况。常译为“有时会”。 ,might 【温馨提示】 may表示请求许可时,其否定回答一般用mustn’t。may not意为“可能不”,而can’t意为“不可能”。 ,would 【温馨提示】 would表示过去的习惯时仅指动作,而且不与现在作对比;used to表示过去的习惯动作或状态,而且与现在作对比,说明现在这种动作或状态已经不存在。
,should,ought to ,have to 【温馨提示】 (1)在回答must的问句时,否定回答通常用needn’t或don’t have to。(2) mustn’t表示“禁止;不许”;而don’t have to表示“不必”。(3) must只有一种形式,而have to有人称、时态的变化。 的用法 的用法
【温馨提示】 (1)dare用作情态动词有dare,dared两种形式。 (2)dare用作实义动词,后接不定式,不定式符号to可省去,但dare以动词-ing形式出现时,不定式符号to不能省略。 要点二“情态动词+have done ”的用法 have done表示对过去已发生的事情进行肯定的推断,只用于肯定句中,意为“一定,必定”,其否定形式为:can’t/cannot have done。 It must have rained last night,for the road was quite wet. 昨晚肯定下雨了,因为路面十分潮湿。 I saw Mr Wang just can’t have gone abroad. 刚刚我还看见王先生了,他不可能已经出国了。 have done意为“本来可以……,本来能够……”,表示虚拟语气。 You could have made greater progress,but you didn’t try your best. 你本来可以取得更大的进步,但是你没有努力。 might have done表示对过去已发生的事情进行推断,意为“可能/或许已经……”。其否定形式为: may/might not have done意为“可能没有做……”。 It’s no use going to his may not have gone may have gone somewhere else. 去他家没用。他可能没有回家,可能已经去了别的地方。 ought to have done表示本应该做某事,却没有做,含有责备或后悔之意。其否定形式为should not/ought not to
外研版英语虚拟语气专项练习(附答案) 一、初中英语虚拟语气 1． If I went to the moon, I ______ bring something unusual back to the earth. A．could B．will C．would D．shall 【答案】C 【解析】 试题分析：此题考查if引导的条件状语从句的相关知识。根据语境可知此句的含义是如果我去月球，我会带回一些不同寻常的东西。这个假设成立的几率很小，故看为虚拟语气。根据语法知识可知从句要用一般过去时，主句要用过去将来时，过去将来时的基本构成would+动词原形，故选C。 考点：if引导的条件状语从句 点评：if既可以引导宾语从句又可以引导状语从句。if充当宾语从句的连接词时，相当于whether，词义为“是否”，遵循宾语从句的时态规则，可根据语境选择任何时态；充当从属连词，引导条件状语从句时，词义为“如果”，若主句中的谓语动词用一般将来时，则从句中的谓语动词通常用一般现在时表示将来。 2．She doesn’t stick to her exercises and a balanced diet. If she _______, she would remain slim and healthy. A．had done B．would do C．did D．should 【答案】C 【解析】 【详解】 句意：她没有坚持锻炼和均衡饮食。如果她这样做了，她将保持苗条和健康。 考查虚拟语气。had done过去完成时；would do过去将来时；did过去时；should应该；根据后文“would remain ”，所以是对现在的虚拟，此处应是did/be动词（were），故选C。 3．Luckily, he wasn’t driving fast at the time of accident; otherwise, I am sure, it _______ a more serious accident. A．would be B．were C．would have been D．had been 【答案】C 【解析】 【详解】 句意：幸运的是，事故发生时他没有开快车；否则，我相信，这将是一个更严重的事故。考查虚拟语气。根据“wasn’t driving”是过去进行时，所以此处是对过去的虚拟，主句时态应用情态动词+have done，故选C。
“would+have+done”虚拟语气，表示对过去事情的假设，意思是“本来会做” 1. I would have told you all about the boy's story, but you didn't ask me. 我本来会告诉你这个小男孩的故事，但是你没有问我。 2. Without your help, I wouldn't have achieved so much. 没有你的帮助，我是不会取得如此大的成绩。“could+have+done”是虚拟语气，表示对过去事情的假设，意思是本来能够做某事而没有做。 He could have passed the exam, but he was too careless. 本来他能够通过考试，但是他太粗心。 请看相关知识点： 一、“must+have+done”表示对过去事情的肯定推测，译成“一定做过某事”，该结构只用于肯定句。 1. It must have rained last night, for the ground is wet. 昨晚一定下雨了，因为地面还是湿的。 2. You must have been mad to speak to the servant. 你和仆人说话，一定是发疯了。 二、“can't+have+done”表示对过去事情的否定推测，译成“不可能做过某事”。 1. Mr. Smith can't have gone to Beijing, for I saw him in the library just now. 史密斯先生不可能去北京了，我刚才还在图书馆见过他。 2. Mary can't have stolen your money. She has gone home. 玛丽不可能偷你的钱，她回家去了。 三、“can+have+done”表示对过去行为的怀疑，用于疑问句，译成“可能做过……吗？”。 1. There is no light in the room. Can they have gone out? 屋里没有灯，他们可能出去了吗？ 2. There is nowhere to find them. Where can they have gone? 到处找不到他们，他们可能到什么地方去呢？ 四、“could+have+done”是虚拟语气，表示对过去事情的假设，意思是本来能够做某事而没有做。 He could have passed the exam, but he was too careless. 本来他能够通过考试，但是他太粗心。 五、“may+have+done”表示对发生过的事情的推测，意思是“可能已经”或“也许已经”，用于肯定句中。 —What has happened to George? —I don't know. He may have got lost. —乔治发生了什么事？