九年级英语第八单元语法：情态动词及练习

Itmust belong to Carla.

情态动词

1. 情态动词表推测

　　对现在情况的推测。

(1)对现在情况的肯定推测用：must+动词原形。

This must be your room. 这一定是你的房间了。

He must be eighty now。他现在一定有八十岁了。

(2)对现在情况的否定推测用：can／could not+动词原形，表示“否定推测或判断”，有“不可能”之意。用can’t还是用couldn’t没有时态差异，只是can’t的语气比couldn’t强。

The boy is honest. He can’t lie. 这个男孩很诚实。他不可能说谎.

That’s impossible! Tom couldn’t bein Hong Kong. 那不可能!汤姆不可能在香港。

(3) might／may+动词原形，表示说话人对事物的推测，可能性较小。

He might not come today. 他今天可能不来了.

It might rain. 天可能下雨。

　　对过去情况的推测用must +have +v—ed，表示对过去情况的推测，意思是：一定(已经发生某事)。

They must have heard the news. 他们一定听到这消息了。

He must have been here sincebreakfast. 早饭后他一定是在这儿。

2. whose引导的特殊疑问句。

whose意为“谁的”，像物主代词一样，亦有名词和形容词的性质。

(1) 用来提问形容词性物主代词。　

Whose pens are these? 这些是谁的笔？

Whose room is that? 那是谁的房间？

(2) 用来提问名词性物主代词。

Whose is that car? 这辆小汽车是谁的？

Whose are these clothes? 这些衣服是谁的？

Itmust Belong to Carla

情态动词专项复习

( ) 1. Mr. Wang ______ be in Nanjing now, he went to Beijing onlythis morning.

  A.mustn’t            B. may not            C. can’t                D. needn’t

( ) 2. –Must I stay at home, Mum?

—No, you ______.

  A.needn’t            B. mustn’t            C. don’t               D. may not

( ) 3. –Can you go swimming with us this afternoon?

—Sorry, I can’t. I _____ take care of mylittle sister at home because my mother is ill.

  A.can                  B. may                 C. would              D. have to

( ) 4. –May I go to the cinema, Mum?

—Certainly. But you ______ be back by 11 o’clock.

  A.can                  B. may                 C. must                D. need

( ) 5. To make our city more beautiful, rubbish ______ into theriver.

  A.needn’t be thrown                         B.mustn’t be thrown

  C.can’t throw                                   D.may not throw

( ) 6. –May I go out to play basketball, Dad?

—No, you ______. You must finish yourhomework first.

  A.mustn’t            B. may not            C. couldn’t           D. needn’t

( ) 7. –Where is Jack, please?

—He _____ be in the reading room.

  A.can                  B. need                 C. would              D. must

( ) 8. –Who is the man over there? Is it Mr. Li?

—No, it ______ be him. Mr. Li is much taller.

A. mustn’t            B. may not            C. can’t                D.needn’t

( ) 9. These books ______ out of the reading room. You have to readthem here.

  A.can’t take         B. must be taken    C. can take            D.mustn’t be taken

( ) 10. –Mum, may I watch TV now? —Sure, but you ______ help me withmy housework first.

  A.can                  B. may                 C. must                D. could

( ) 11. The boy said he had to speak English in class, but he ______speak it after class.

  A.could                      B. didn’t haveto   C. might               D. shouldn’t

( ) 12. –Must we hand in the papers now?

—No, you ______.

  A.can’t                B. may not            C. mustn’t            D. needn’t

( ) 13. John ______ go there with us tonight, but he isn’t very sureabout it.

  A.must                B. can                  C. will                  D. may

( ) 14. Even the top students in our class can’t work out thisproblem. So it ______ be very difficult.

  A.can                  B. may                 C. must                D. need

( ) 15. Put on more clothes. You ______ be feeling cold with only ashirt on.

  A.can                  B. could               C. would              D. must

( ) 16. It’s still early. You ______.

A. mustn’t hurry                               B. wouldn’t hurry

C. may not hurry                               D.don’t have to hurry

( ) 17. –May I stop here?

—No, you ______.

  A.mustn’t            B. might not         C. needn’t             D. won’t

( ) 18. A computer ______ think for itself, it must be told what todo.

  A.can’t                B. couldn’t           C. may not            D. might not

( ) 19. –Could I borrow your dictionary?

— Yes, of course you _______.

  A.might               B. will                  C. can                  D. should

( ) 20. Peter ______ come with us tonight, but he isn’t very sureyet.

  A.must                B. may                 C. can                  D. will

( ) 21. Michael ______ be a policeman, for he’s much too short.

  A.needn’t            B. can’t                C. should              D. may

( ) 22. ______ I know your name?

A. May                 B.Will                 C. Shall                D. Must

( ) 23. You ______ be more careful next time.

  A.can                  B. may                 C.must                D. might

( ) 24. You ______ miss the lesson, though we ______ have it onThursday.

  A.mustn’t; needn’t                            B.needn’t; mustn’t

  C.mustn’t; mustn’t                            D.needn’t; needn’t

( ) 25. This pen looks like mine, yet it isn’t. Whose ______ it be?

     A. must                B. may                 C. would              D.can

( ) 26. What kinds of homes will we live in the future. Nobody______ be sure, but scientists are working out new ideas now.

  A.will                 B. may                 C. can                  D. must

( ) 27. I ______ like to know where you were born.

  A.shall                B. should              C. must                D. may

( ) 28. ______ you be happy!

  A.Might              B. Must                C. Wish                D. May

( ) 29. A teacher ______ do every exercise, but a student must.

  A.may not           B. needn’t             C. can’t                D. mustn’t

( ) 30. The matter ______ be changed into a gas, but it _______ beheated to its boiling point.

  A.may; needn’t    B. may; can          C. mustn’t; needn’t       D. can; must

( ) 31. Teachers and students ______ look coldly at you for a day ortwo, but there are friendly feelings in their hearts.

  A.must                B. can                  C. may                 D. should

( ) 32. Cars and buses ______ stop when the traffic lights turn red.

  A.can                  B. need                 C. may                 D. must

( ) 33. –Do you think his story ______ true. —I don’ think so. Butit sounds good.

    A.must be            B. may be             C. can be              D. has to be

( ) 34. Look out! The knife is very sharp. You ______ cut yourfinger.

  A.need                B. must                C. should              D. may

( ) 35. –How long ______ the book be kept?

—For two weeks, but you ______ return it ontime.

  A.can; may          B. may; need         C. can; must          D. must; need

( ) 36. – May I have an apple, Mum?

—Certainly. But you ______ wash your handsfirst.

  A.may                 B. must                C. can                  D. need

( ) 37. –There is a lot of smoke coming out of the teaching buildingthere.

—Really. It ______ be a fire,most probably.

  A.can                  B. ought to           C. may                 D. must

( ) 38. –Shall I tell John about the bad news?

—No, you ______. I think that will make himsad.

  A.needn’t            B. wouldn’t          C. shouldn’t          D. mustn’t

( ) 39. –Could I call you by your first name?

—Yes, you ______.

  A.will                 B. could               C. may                 D. might

( ) 40. –Let’s go to the cinema, shall we? — _______.

  A.No, I can’t                                   B.Yes, I will

  C.Yes, thank you                              D.No, we’d better not

( ) 41. —______ the man there be our new teacher?

—He ______ be, but I’m not sure.

  A.May; mustn’t                                B.Can; may

    C.Must; can’t                                   D.Can; can’t

( ) 42. –Someone is knocking at the door. Who ______ it be?

—It ______ be Tom. He is still in the school.

  A.can; can’t                                     B.can; mustn’t

  C.might; could                                 D.might; may

参考答案

1—5 CADCB

6—10 ADCDC

11—15 BDDCD

16—20 DAACB

21—25 BACAD

26—30 CBDBD

31—35 CDCDC

36—42 BBDCDBA

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