情态动词的特殊用法1. _____ fired, your health care and other benefits will not be immediately cut off.A. Would you beB. Should you beC. Could you beD. Might you be2. —What’s the name? —Khulaifi. _____ I spell that for you? A. Shall B. Would C. Can D. Might3. John, look at the time. _____ you play the piano at such a late hour? A. Must B. Can C. May D. Need4. —Must I turn off the gas after cooking? —Of course. You can never be _____ careful with that.A. enoughB. tooC. soD. very5. Some aspects of a pilot’s job _____ be boring, and pilots often _____ work at inconvenient hours.A. can；have toB. may；canC. have to；mayD. ought to；must6. —When can I come for the photos? I need them tomorrow afternoon. —They _____ be ready by 12:00.A. canB. shouldC. mightD. need7. When he was there, he ___ go to that coffee shop at the corner after work every day.A. would B. should C. had betterD. might8. —Excuse me, but I want to use your computer to type a report. —You _____ have my computer if you don’t take care of it.A. shan’tB. might notC. needn’tD. shouldn’t9. You can’t imagine that a well-behaved gentleman _____ be so rude to a lady. A. might B. need C. should D. would10. Many people agree that _____ knowledge of English is a must in _____ international trade today.A. a；不填B. the；anC. the；theD.不填；the11. How _____ you say that you really understand the whole story if you have covered only part of the article?A. canB. mustC. needD. may12. The fire spread through the hotel quickly but everyone _____ get out. A. had to B. would C. was able to D. could13. There’s no light on — they ____ be at home. A. can’t B. mustn’t C. needn’t D. shouldn’t14. Tom, you _____ leave all your clothes on the floor like this! A. wouldn’t B. mustn’t C. needn’t D. may not15. _____ we never forget each other. A. May B. Can C. Must D. Should练习：1. Mr. Bush is on time for everything. How ____ it be that he was late for opening ceremony?A. can B. should C. may D. must2. Naturally, after I told her what to do, my daughter _____ go and do the opposite! A. may B. can C. must D. should3. It has been announced that candidates _______ remain in their seats until all the papers have been collected.A. canB. willC. mayD. shall4. “The interest ___________ be divided into five parts, according to the agreement made by both sides,” declared the judge.A. mayB. shouldC. mustD. shall5. You can’t imagine that a top student ______ have failed in the college entrance examination.A. mightB. needC. shouldD. would6. Football, as is known to the world, _______ be exciting and inviting. A. should B. might C. can D. will7. —_____ he open the door? —Yes, please. A. Shall B. Will C. Can D. Would8. The World Wide Web is sometimes jokingly called the World Wide Wait because it _____ be very slow.A. shouldB. mustC. willD. can9. —Isn’t that Ann’s husband over there? —No, it ______ be him-I’m sure he doesn’t wear glasses.A. can’tB. must notC. won’tD. may not10. It’s nearly seven o’clock. Jack _____ be here at any moment. A. must B. need C. should D. can11. What should we do if it _____ tomorrow? A. should snow B. would snow C. snow D. will snow12. You _____ use my bike on condition that you give it to me before I leave here. A. should B. must C. ought to D. shall常见的通常只能用主动语态的场合1. 当谓语动词是不及物动词，又不能构成动词短语接宾语时。
2. 当宾语是反身代词时。
如I hurt myself.3. 当宾语是相互代词时。
如We should learn from each other.4. 当宾语是不定式、动名词时。
如I want to watch TV. / They enjoy playing basketball.5. 当谓语动词是拥有、容纳类动词（have, hold）时。
如I have a big family. / The room can hold 40 people.6. 当谓语动词是开始、结束类动词（start, begin, stop, end, finish）时。
如The first class will start at 8:00. / The film ended whenI got there.7. 当谓语动词是开张、关门类动词（open, close）时。
如The shop usually opens before 8:30.8. 当谓语动词是花费类动词（take, cost）时。
如The new dress cost her 90 dollars.9. 当谓语动词是发生类动词（happen, take place）时。
如Something strange happened an hour ago.10. 当谓语动词是保持类动词（keep）时。
如The hall keeps quiet now.11. 当谓语动词是运动、变化类动词（leave, move, change）时。
如The train is leaving. / Things have changed a lot. / The car didn’t move.12. 当谓语动词是变得、成为类动词（become, get, turn）时。
如The teacher became angry. / The weather is getting warmer and warmer.13. 当谓语动词是…起来类动词时。
具体细分如下：○1半系动词（look, sound, feel, smell, taste）。
如The building looks very tall. / That piece of music sounds nice. / The dish smells delicious.○2其它类动词（eat, drink, cook, drive, work, read, write, sell, show, play, clean, wear, wash, burn等）。
如This kind of fruit eats crisp (脆). / Orange drinks sweet. / The car drives smoothly. / This text reads easily. / The pen writes well. / The clothes wash hard.14. 当宾语前有与主语一致的物主代词，且宾语名词为身体的一部分时。