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    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have 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. 2 比较can 和be able to 1)can could 表示能力,可能 , 只用于现在式和过去式.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. = 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 have 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. 3 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. 4 比较have to和must 1) 两词都是'必须'的意思.have 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. He said that they must work hard. 他说他们必须努力工作. 2) have 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 have to 表示"不必" mustn't 表示"禁止". You don't have 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. 5 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 have worked hard all day.You must be tired. 你辛苦干一整天.一定累了. 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 have 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 have been sleeping, so I didn't hear it. 5) 否定推测用can't. If Tom didn't leave 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. 6 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 have 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 have 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 have 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 have 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. 7 情态动词+ have +过去分词 1) may have + done sth, can have + done sth 表示过去.推测过去时间里可能发生的事情. Philip may have been hurt seriously in the car accident. Philip can have been hurt seriously in the car accident. 2) must have +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 have gone by bus. 3) ought to have done sth, should have 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 have been more careful in this experiment. He ought not to have thrown the old clothes away. ought to 在语气上比should 要强. 4) needn't have done sth 本没必要做某事 I dressed very warmly for the trip, but I needn't have done so. The weather was hot. 5) would like to have done sth 本打算做某事 I would like to have read the article, but I was very busy then. 8 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.must渐强. 9 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 have done sth表示与事实相反的结果.意为"本来最好". You had better have come earlier. 10 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 have a choice, I had sooner not continue my studies at this school. I would rather stay here than go home. = 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. 11 will和would 注意: 1)would like, Would like to do = 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? 12 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-? /don't have 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 haven'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. 13 带to 的情态动词 带to 的情态动词有四个:ought to, have to, used to, be to, 如加上have got to ,, be able to.为六个.它们的疑问.否定形式应予以注意: Do they have 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 have 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.have told B.tell C.be telling D. having 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have. 14 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 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后面接doing也可以表示被动: need doing = need to be done 【查看更多】

     

    题目列表(包括答案和解析)

    考查情态动词的用法。句意为：你什么意思，只有10张票吗？应该是12张。should表示可能性推测，意为“应该”，符合句意。would表示过去将来；will表示意愿；shall表示一种语气，均不合句意。

     

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    语法：根据括号内的要求和句子意思，用恰当的词语填空。（每个空格只填一个单词；每格0.5分，满分10分）

     76. 万圣节期间，如果邻居们不给孩子们糖果，孩子们很可能会作弄他们。(情态动词)

     If the neighbours do not give them any sweets, the children _______ _______ ________

    _______ on them in Halloween.

    77. 这就是她想离开的原因。(表语从句)

    That’s _______ _______ _______ to leave.

    78. 不少的人认为，你不用五天就能横跨加拿大。(同位语从句)

    Some people have the idea _______ you can cross Canada in _______ _______ five days . 

    79. 电子邮件和电话一样在日常交际活动中起着重要的作用。（主谓一致）

    Email, as well as telephones, ________ _______ _______ important role in daily communication.

    80. 大清早，我们骑着自行车到郊外种树，一路上有说有笑。（非谓语动词）

    In the morning, we bicycled to the suburb to plant trees, _______ _______ _______ all the way.

    81. 中华民俗文化村的每个区域都是根据全国各地文化遗产仿造而来的。(构词法)

    Every area of the China Folk Cultural Village ________ _______ _______ the ________ relics from all over China. 

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    仔细阅读下面的短文，文中共有10个空格。请根据每小题括号内的具体要求完成语法填空，例如正确词性，词形变化等。

    Jackie Chan is satisfied with his limited edition car

    China news, May 18 - According to the Hong Kong- [1]  (base) newspaper Ta Kung Pao, Jackie Chan  [2]  (助动词)participated in the promotion of many famous brands of clothing, shoes, stationery and food  [3]  (介词)recent years. Several days ago, he unveiled(使公诸于众)a limited edition four-wheel drive car, [4]  (从属连词)is especially customized(定做, 定制) to his personal taste.

    　　At the press conference in Singapore a few days ago, Jackie said that he [5]  (情态动词)have cooperated with Parjero, but the plan was suspended because of the sudden pass-away of the car designer. Later he decided [6]  (work)with his old partner Ralliart, [7]  (代词)of the brands of Mitsubishi, and finally rolled out(大量生产) this limited edition car with a storage capacity of 3,500 cubic centimeters of oil. Only 50 such cars will be available [8]  (介词)the world.

    　　As a car fan, Jackie has participated in the car design himself. The car, [9]  (decorate)with the symbols of "dragon", is said to "be comfortable as a sedan(轿子) and powerful as a roadster(跑车)." He added that making this car is to fulfill his dream, not to make money. The car price has not been announced yet due to [10]  (物主代词)status of limited edition and different taxations all over the world.

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    仔细阅读下面的短文，短文中有10个空格。请根据语境或按照括号内的具体要求完成语法填空、词形变化等。

    Thanksgiving Around the World

    　　Thanksgiving in Canada is much the same as it is in the United States; however, it 　　1　　(celebrate)on a different day－the second Monday in October．In other parts of the world, different cultures also celebrate festivals of thanksgiving．Although they are quite different 　　2　　(介词)the American holiday, they all give thanks for life’s blessings and the celebration of the autumn harvest．

    　　In Great Britain, Harvest festival is celebrated in late September 　　3　　(连词)early October．Special services of thanksgiving 　　4　　(be)held at local churches to honor the day．Decorations include autumn flowers, fruits, vegetables and other food．

    　　Jewish people around the world celebrate Sukkot, a festival of thanksgiving that 　　5　　(last)nine days．For this occasion, a Jewish family will build a booth(棚)called sukka．It is then decorated with leaves, branches, and fruits or vegetables from the new harvest．Tables are set up inside the sukka, so meals 　　6　　(情态动词)be eaten inside．The sukka is also a place to pray．

    　　The Festival of the Autumn Moon, or Zhong Qui, is the Chinese 　　7　　(celebrate)of thanksgiving．It is held on the 　　8　　(eight)month of the Chinese calendar．The Moon Goddess is honored with mooncakes, and children parade with colored lanterns in the evening．

    　　In southern India, people in Kerala hold the harvest festival of Onam．Samaritans give food to 　　9　　(who/those)in need and homes are decorated with flowers．The celebration continues late into the night with spectacular displays of fireworks．

    　　A Lithuanian thanksgiving tradition involves the creation of a boba(meaning old woman)from the last bunch of grain at harvest time．The grain is fashioned into a doll shape and decorated with ribbons(丝带)and flowers．Keeping the boba until spring is believed 　　10　　(keep)the spirit of the crop alive until replanting begins the following year．

    1．________　2．________　3．________　4．________　5．________

    6．________　7．________　8．________　9．________　10．________

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    仔细阅读下面的短文，短文中有10个空格或划线句子。请按照每小题括号内的具体要求完成语法填空、词形变化、句子合并、句子改写以及病句改正等。答案填写在标号为1～10的对应位置。

    　　Pollution 　　1　　(be)a problem that happens in water, air and earth．It is 　　2　　(表语)with animals and humans．The water pollution is 　　3　　(cause)by waste from factories．The 　　4　　(fish)will die, if the river polluted by chemical factories．Then if some people 　　5　　(谓语动词)those fish, they will also be dead．The others is air pollution．　　6　　(改正错误)It comes from factories, power stations and cars．　　7　　(冠词)chemical in the smoke will fall in the rain．This “chemical rain” will kill trees and fish．It’s either bad to the building．　　8　　(改正错误)From that we 　　9　　(情态动词)know how bad the pollution is．

    　　We hope that the scientists can find out the way to make environment better soon．　　10　　(改为形式主语结构)

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