中小学教育资源及组卷应用平台
Unit 8 It must belong to Carla .
语法精析
情态动词的用法归纳
情态动词有can (could),may (might) , must , shall (should) , will(should) , dare( dared) , need(needed), ought to 等。大部分情态动词五人称和数的变化,不能单独使用,必须与其后的动词原形一起构成谓语。
can,could
表示能力(体力、知识、技能)
Can you lift this heavy box (体力)
Mary can speak three languages (知识)
Can you skate (技能)
此时可用be able to 代替,can 只有一般现在时和一般过去时;而be able to 则有更多的时态变化。
I’ll not be able to come this afternoon.
当表示“经过努力才能做成功某事”时应用be able to , 不能用can , 如:
He was able to go to the party yesterday evening in spite of the heavy rain .
表示请求和允许。
-Can I go now
-Yes, you can. /No, you can’t .
此时可与may互换。在疑问句中还可用could, might 代替,不是过去式,只是语气更委婉,不能用于肯定句和答语中。
-Could I come to see you tomorrow
-Yes, you can .(No, I’m afraid not )
表示客观可能性(客观原因形成的能力)
They’ve changed the timetable , so we can go by bus instead .
This hall can hold 500 people at least .
表示推测(惊讶、怀疑、不相信的态度),用于疑问句、否定句和感叹句)
Can this be true
This can’t be done by him .
How can this be true
may, might
表示请求和允许。might比may语气更委婉,而不是过去式。否定回答时可用can’t 或mustn’t ,表示“不可以,禁止”
-Might /May I smoke in this room
-No, you mustn’t .
-May/Might I take this book out of the room
-No , you can’t /mustn’t .
用 “May I ... ”征询对方许可时比较正式和客气,而用 “Can I .. ” 在口语中更常见。
用与祈使句,表示祝愿 。
May you succeed !
表示推测、可能性(不用于疑问句)
might 不是过去式,它所表示的可能性比may小
He may/might be very busy now .
Your mother may /might not know the truth .
在回答must引出的问句时,如果是否定的,不能用mustn’t (禁止;不准);而用needn’t ;don’t have to (不必)
-Must we hand in our exercise books today
-Yes, you must /No , you don’t have to /No , you needn’t
must 是表达说话人的主观看法,而have to 则强调客观需要。must 只有一般现在时,have to 有更多的时态形式。
The play isn’t interesting . I really must go now .
I had to work when I was at your age.
表示推测、可能性(只用于肯定的陈述句)
You’re Tom’s good friend , so you must know what he likes best.
Your mother must be waiting for you now .
must be /may be/ might be/ could be/ can’t be 的用法
must be 语气强硬,“必须;一定”之意。
may be /might be/could be 语气不确定, “可能”之意;
can’t be 语气偏强硬, “不可能“之意。
学法精炼
( ) 1. -May I stop car here
-No, you ______ .
can’t B. shouldn’t C. needn’t D. don’t have to
( ) 2. It’s nearly seven o’clock . Jack _____ be here at any moment .
must B. need C. should D. can
( ) 3. The book ____ Zhang Lei’s . His name is on the cover.
must be B. need be C. might be D. can’t be
( ) 4. Does this house ______ Mr. Winter
is B. belong to C. be to D. belong
5 把下面句子变成同义句。
These clothes are mine.
______________________________________________________________
( ) 6. I used to _____ early in the morning when I was still a high school student .
get up B. getting up C. get in D. getting in
( ) 7. I am used to _____ rice now.
eating B. eat C. eatting D. drinking
Scarf is used to _________(take) a walk .
He ______ if you _____ him. 如果你请他,他会来的。
( ) 11. If he _____ the film , he will tell you.
like B. not like C. don’t like D. doesn’t like
( ) 12. _____ is wrong with your car , so you can drive it for a long time.
Something B. Nothing C. Anything D. No one
( ) 13. -There are two sweaters here. Which one do you want to buy
-_____ of them , one is for my sister , the other is for myself .
Neither B. Both C. Either D. All
( ) 14. Let’s go to the zoo ____ the monkeys .
see B. seeing C. to see D. sees
语法精炼
( ) 1. -Must we do it now
-No, you _____ .
won’t B. needn’t C. can’t D. don’t
( ) 2. He ____ at home , I’m not sure.
may B. can’t be C. may be D. must be
( ) 3. You _____ to the meeting this afternoon if you have something important to do .
needn’t to come B. don’t need come
C don’t need coming D. needn’t come
( ) 4. -May I pick a flower in the garden
-_______ .
No, you needn’t B. Not , please
C No, you mustn’t D. No, you won’t
( ) 5. You’d better _____ late again .
don’t B. not be C. not being D. won’t be
( ) 6. -Can I leave this door open at night
-You _____ better not .
should B. would C. could D. had
( ) 7. Put on more clothes . You ____ be feeling cold with only a shirt on .
can B. could C. would D. must
( ) 8. I thought you ___ like something to read , so I have brought you some books.
may B. might C. could D. must
( ) 9. - I saw Linda in the supermarket .
-It _____ her , because she has gone to Shenzhen .
should be B. may be C. must be D. can’t be
( ) 10. The plane is dead . I ____ it more water.
will gave B. would have given
C must give D. should have given
( ) 11. It’s freezing outside . You _____ put on your overcoat .
had better to B. had better
C would better D. would better to
( ) 12. You _____ return the book now . You can keep it till next week if you like .
can’t B. mustn’t C. needn’t D. may not
( ) 13. Where is my pen I _____ it .
might lose B. would have lost C. should have lost D. must have lost
( ) 14. I didn’t hear the phone . I ______asleep .
must be B. must have been C. should be D. should have been
( ) 15. He ____ you more help , even though he was very busy .
might have given B. might given
C may have given D. may give
( ) 16. A computer _____ think for itself ; it must be told what to do .
can’t B. couldn’t C. may not D. might not
( ) 17. -Could I borrow your dictionary
-Yes, of course you ______ .
might B. will C. can D. should
( ) 18. Which _____ you _____ do , go to the cinema or stay at home
do ; rather B. would ; rather C. will; rather D. should ;rather
( ) 19 -Shall I tell John about it
-No, you ______ . I’ve told him already .
needn’t B. wouldn’t C .mustn’t D. shouldn’t
( ) 20. Peter _____ come with us tonight , but he isn’t very sure yet.
must B. may C. can D. will
参考答案
语法精炼
1-4 ACAB 5. These clothes belong to me 6. A 7. A 8. taking 9. will come ; invite 10-14 DDBBC
学法应用
1-5 BABCD 6-10 CBDBA 11-15 BDCAB
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