情态动词[下学期]
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课件49张PPT。(1) 对现在或将来情况推测：must +动词原形。
must只能用于肯定。否定和疑问分别用can’t和can。
He must tell a lie. Can he tell a lie ?
He can’t tell a lie.
*Must-should/ought to –may-might/could+do
可能性依次减弱2、推测语气(2) 对过去情况推测：must (may, might)+完成时。
You must have met him before.
must—may—might可能性依次减弱
must只能用于肯定句，译成“一定”。否定和疑问分别用can’t / couldn’t和can / could。
Could /Can it have happened last night ?
It couldn’t/can’t have happened last night.
He must be reading, isn’t he?
You must do it yourself, don’t you?
He must have gone over the article, hasn’t he?
It must have rained last night, didn’t it?3、表猜测语气的反意疑问句的构成1）对过去情况推测。
must/may/might have done
can’t/couldn’t/may not/might not have done
can/could have done…?
7、情态动词+have done2）译成“本…”could/should/need have done.
You should have come here five minutes earlier.
3）虚拟语气（与过去事实相反的主句）
If you had followed my advice, you wouldn’t have been defeated. 一、must ＋have ＋过去分词：表示对过去情况的一种肯定推测，即说话人认为过去某事发生的可能性很大。用于肯定句，汉意为“肯定，一定”。如： Where is my wallet？I must have lost it at
home．我的钱包在哪儿？我肯定掉在家里了。
The ground is very wet；it must have rained last
night．地很湿，昨晚一定下雨了。 二、can（could）＋have＋过去分词：用于说明过去某事可能或不可能已经发生，即说话人对过去事情持怀疑或不肯定态度。用于否定句。汉意为“不可能”。如：
I did not see her at the meeting yesterday．She can not have attended it．昨天我在会上没见到她。她不可能参加会议了。
在肯定句中，则表示过去可能做而实际并没有做的事情，有“劝告，责备”的语气。汉意为“可能”。如：
Mary is an hour late—she can have been delayed by fog．玛丽迟到了一小时，可能因为大雾而耽搁了。 三、may（might）＋have＋过去分词：表示对已经发生事情的不肯定推测，即说话人认为过去某事发生的可能性为一般。用于肯定句和否定句。汉意为“大概，也许”，其中might较may语气更弱，把握性更小。如：
He might have gone to see his uncle yesterday evening（but I am
not sure）．昨晚他大概去看他叔叔去了（只是我不敢肯定）。（把握性小）
Don't worry，you may not have been hurt seriously．别着急，你也许伤得不厉害。 四、should（ought to）＋ have ＋过去分词：表示对过去某事情的责备。肯定句表示过去本应发生的事却没有发生或本应该做的事而没有做，汉意为“本应”；否定句表示已发生了本不该发生的事或表示本来不该做的事而做了。汉意为“本不该”。如： You should have handed in your composition yesterday morning．昨天上午你本应把作文交了。（可你却没这么做）
The wall in the bedroom should not have been painted yellow．卧室里的墙本不该漆成黄色。 五、needn't ＋have ＋过去分词：表示做了不必做的事情。汉意为“其实不必，本来不必”。如：
There was plenty of time．She needn't have
hurried．时间很充裕，她其实不必这么匆匆忙忙的。
You needn't have woken her up．It's only six．你其实不必叫醒她。现在才六点。 Can/Could/May/Might/Must表示推测
一、形式与意义
1．could ／may ／might ＋动词原形，表示现在或将来可能……。
The light is on．Mr Baker could ／may ／ might be in his office now．灯亮着，贝克先生（现在）可能在办公室。
There could ／may ／might be a rainstorm tonight．今晚可能有暴风雨。
2．must ＋动词原形，表示现在或将来一定……。
He must live nearby．他（现在）一定住在附近。
I think she must be well in two or three days．我认为两三天后她一定会康复的。 3．could ／may ／might ＋be ＋V-ing，表示现在可能正在……。
They aren't in the classroom．They could ／ may ／might be reading in the library．他们现在不在教室，可能正在图书馆看书。
4．must＋be ＋V-ing，表示现在一定在……。
Tom has finished his homework，and he must be watching TV now．汤姆做完了作业，现在一定在看电视。 5．could ／may ／might ＋have ＋V-ed，表示过去可能……。
He could ／may ／might have misunderstood you yesterday．昨天他可能误解了你。
6．must＋have ＋V-ed，表示过去一定……。
Jack didn't go to work this morning．Something must have
happened to him．今天上午杰克没去上班，他一定出了什么事。 二、要注意的问题
1．can't ／couldn't与may not ／might not的区别
表示推测时，can't ／couldn't意为“不可能”，语气较强，有“满有把握”的含义；may not ／might
not意为“可能不”，语气较弱，有“拿不准”的含义。如：
The man standing over there____ be Tom．He has gone to Japan． A．can't B．may not
此题正确选项为A。从He has gone to Japan．的陈述可知，说话者对“站在那边的人不是Tom”满有把握，并非拿不准。 2．must的否定式
表示推测时，must的否定式是can't，不是 mustn't或needn't。如：
汉：他一定不是英国人。
英：（正）He can't be English．
（误）He mustn't ／needn't be English． 情态动词表推测：过去情况 现在情况
must have done must be
may/might have done may/mightbe
could have done could be
can’t/couldn’thave done can’t/couldn’t be
may not have done may not be
might not have done might not be
can/could have done can/could be肯定句否定句疑问句1. Must I stay here all the time?
No, you needn’t. ( don’t have to )
You may go home.
2. He must be the man you are looking for,
isn’t he?
3. They must be preparing their lessons now,
aren’t they?
4. You must have been to Beijing many times,
haven’t you?
5. She must have been here just a moment ago,
wasn’t she?must的考点主要体现在以下三个方面：1．作“必须”、“应当”、“应该”解时在各种句式中的应用；
2．must表示推测时反意疑问句的构成；3．对过去发生的事情的推测用法及和其它情态动词的区别。
现结合历届高考对其用法作一归纳。1．must可以用来表示义务、命令或必要性，意为“应当”、“必须”、“应该”，其否定式及否定回答要用needn't或don't have to，而不用mustn't。例如：
—Must I tell Tom about it？
—No，you ____ ．I've told him about it already．（MET90）
A．mustn't B．shouldn't C．needn't D．wouldn't
Two years ago，my husband bought me a bicycle．If you live in a town，it is often faster than a car and you _ worry about much（93'上海）
A．must not B．may not C．should not D．don't have to 2．mustn't表示“禁止”、“不许”、“不应该”，表示否定的决断或强有力的劝告。例如：
Johnny，you ____ play with the knife， you ____ hurt
yourself．（NMET96）
A．won't；can't B．mustn't；may
C．shouldn't；must D．can't；shouldn't
If you really want yourself to be in good health，you must
____ always so much．（95'上海）
A．not；be smoking B．not；have smoked
C．not；to smoke D．be not；smoking 3．must可以用来表示推测，意为“必定”、“准是”、“一定是”。作此解时，must的否定式是can‘t，而不是mustn’t。
must后跟be＋n．； be ＋doing；have done sth．表示对现在、正在进行的或过去发生的事情的推测。must这种用法的反意疑问句部分要根据陈述部分的不定式及时间状语，采用相应的助动词形式。
例如：You must be teacher，aren't you？你准是位老师，对不对？ The boy must be watching TV，isn't he？这孩子现在一定在看电视，对吗？
I don't think he must have told you the news yesterday， ____ he？（94'上海）A．must B．did C．has D．does
The Turners must have sold their garden， haven't they？特纳一家准是已经把花园卖掉了，是吗？
从上述题例可以看出：must后的动词是 be时，反意疑问句的助动词用be的一般形式；must表示对有具体的过去时间状语的事情的推测时，反意疑问句的助动词用一般过去时助动词形式；若没有表示过去的时间状语，反意疑问句的助动词须用现在完成时助动词形式。 4．“must ＋have done”表示对过去发生的事情的很有把握的推测，意为“必定已经……”。该结构只用于肯定句，否定句中用 can't ／couldn't have done，疑问句中用can ／ could have done．．．？分别表示对过去事情的否定或疑问推测（注：无mustn't have done结构）。例如：
Where is my pen？I ____ it．（M ET88）
A．might lose B．would have lost
C．should have lost D．must have lost —There were already five people in the car but they managed to take me as well．
—It ____ a comfortable journey．（NM ET95）
A．can't be B．shouldn't be
C．mustn't have been D．couldn't have been 5．must还可以用来表示发生了与说话人的愿望相反或令人不愉快的事情。意为“偏偏”、“（干吗）偏要”。例如：
Must you do it like that，Tom？汤姆，你干吗偏要那么做？
As I was sitting down to supper，the telephone must ring．正当我坐下来吃晚饭时，偏偏电话铃响了。 6．must与have（got）to的区别：一般地讲，must只用于一般现在时，而have（got）to则有更多的时态形式。must往往用于表示从说话者或听话者看来的“必要”，是主观看法；而have（got）to则用来表示来自客观外界的“必要”，含有“不得不”、“被迫”之意，是客观要求。例如：
We must study hard so as to serve our motherland better in future．我们应当努力学习以便将来更好地报效祖国。
You'll have to study harder if you want to pass the college
entrance examinations．如果你想上大学，就必须更加努力地学习。
情态动词典型例题解析
1.-----There were already five people in the car but they managed to take me as well.
-----It ____a comfortable journey. ( )
can't be
B. shouldn't be
C. mustn't have been
D. couldn't have been
D2. Johnny, you ______play with the knife, you ____hurt yourself. ( )
won't ; can't
mustn't ; may
C. shouldn't ; must
D. can't ; wouldn'tB
3. The fire spread through the hotel very quickly but everyone _____get out. ( )
had to
B. would
C. could
D. was able toD4. ------When can I come for the photos ? I need them tomorrow afternoon.
-----They _____be ready by 12 : 00 . ( )
A. can B. should
C. might D. need
B
5. With so much work on hand, you ____to see the game last night. ( )
mustn’t go
B shouldn’t go
C. could have gone
D. shouldn’t have goneD6.They are disappointed at the English party. They say that it ___better organized. ( )
had been
B. had to be
C. must have been
D. could have been
D
7.She must have forgotten about the class _______? ( )
doesn’t she
B. mustn’t she
C. hasn’t she
D. won’ t she
C8. See who’s there ! _______ it be Mary ?
May
Must
Can
willC9.Jenny ____with him at that time, for I was having dinner with her in my home. ( )
can’t have been
B. mustn’t have been
C. must be
D. may be
A
10.Tom’s father promised, “You ___have a new computer if you pass the coming examination,” ( )
can
B. should
C. shall
D. may
C11.---- Did you walked home by yourself last night ?
---- Yes, I did. But I think I _____. ( )
needn’t
B. shouldn’t
C. may not have
D. needn’t haveD
12.----Would you change this bucket for another ? It ______ hold water.
----- OK. I’m really sorry.
won’t
can’t
didn’t
doesn’tA13. You ought to have helped him with his English, ____you ?
A. won’t you
B. ought not you
C. shouldn’t you
D. wouldn’t you
C14.--- I though I ____something burning. ( )
---Really ?
smelled
B. was smelling
C. could smell
D. might smell
C15. She _____out alone at night. ( )
dare not to go
B. dares not go
C. doesn’t dare to go
D. doesn’t dares goCChoose the best answer:
1.---There were already 5 people in the car ,
but they managed to take me as well.
---It ______a comfortable journey.
A.can’t be B. shouldn’t be
C. mustn’t have been D. couldn’t have been
2.---Have you seen our English teacher?
---No,but where ______he______?
A.can ,have gone B. must ,have gone
C. may,have gone D. could , have beenDA3. Peter______come with us tonight, but he isn’t
very sure yet.
A. must B. may
C. can D. will
4. Johnny, you______play with the knife,
you ______hurt yourself.
A. won’t , can’t B. mustn’t , may
C. shouldn’t , must D. can’t ,shouldn’t
5. I didn’t hear the phone. I______asleep.
A. must be B. must have been
C. should be D. should have been
BBB 1．— ____ I put my bike here？
—No．You should put it over there．
A．Will B．Would C．Shall D．Should
2．A computer ____ think for itself，it must be told what to do．
A．can't B．couldn't C．may not D．won't
3．—May I leave now？
—No，you ____ ．
A．needn't B．can't C．mustn't D．shouldn't
4．I'm afraid it ____ rain tonight．
A．can B．could C．may be D．mightcABD5．—Must I finish the work today？
—No，you ____ ．
A．needn't B．mustn't C．may not D．can't
6．He ____ see a doctor before it is too late．
A．must B．must have to C．need D．ought
7．Our students are having an exam． You ____ make so much
noise here．
A．won't B．mustn't C．may not D．needn't
8．Don't be worried ．The news ____ be true．
A．may not B．mustn't C．shan'tD．ought notAABA 9．Come over here and join us in the game， ____ you？
A．shall B．do C．won't D．would
10．Hurry up！The teacher ____ for us at the school gate．
A．must wait B．must be waiting
C．may wait D．must have waited
11．—Look．That ____be Jim．
—No，it ____ be him．He has gone to Beijing．
A．must，mustn't B．may，may not
C．must，can't D．may，won't
12．—Shall I tell John about it？
—No，you ____ ．I've told him already．
A．needn't B．mustn't C．can't D．shouldn'tDBCA 13．I thought you ____ like something to read，so I have bought you some English story-books．
A．may B．could C．might D．Must 14． ____ you succeed in every-thing you do．
A．May B．Can C．Must D．Will
15．—Must I take a bus there？
—No，you ____ ．It's only ten minutes'walk from here．
A．mustn't B．shouldn't C．don't need D．don't have toCAD16．It's nearly seven o'clock ．Jack ____ be here at any moment．
A．must B．need C．should D．have to
17．However difficult it ____ ，I'll try to do it well．
A．may be B．must be C．will be D．shall be
18．—Will you stay for lunch？
—Sorry，I ____ ．My brother is coming to see me．
A．mustn't B．can't C．needn't D．won'tCAB
must只能用于肯定。否定和疑问分别用can’t和can。
He must tell a lie. Can he tell a lie ?
He can’t tell a lie.
*Must-should/ought to –may-might/could+do
可能性依次减弱2、推测语气(2) 对过去情况推测：must (may, might)+完成时。
You must have met him before.
must—may—might可能性依次减弱
must只能用于肯定句，译成“一定”。否定和疑问分别用can’t / couldn’t和can / could。
Could /Can it have happened last night ?
It couldn’t/can’t have happened last night.
He must be reading, isn’t he?
You must do it yourself, don’t you?
He must have gone over the article, hasn’t he?
It must have rained last night, didn’t it?3、表猜测语气的反意疑问句的构成1）对过去情况推测。
must/may/might have done
can’t/couldn’t/may not/might not have done
can/could have done…?
7、情态动词+have done2）译成“本…”could/should/need have done.
You should have come here five minutes earlier.
3）虚拟语气（与过去事实相反的主句）
If you had followed my advice, you wouldn’t have been defeated. 一、must ＋have ＋过去分词：表示对过去情况的一种肯定推测，即说话人认为过去某事发生的可能性很大。用于肯定句，汉意为“肯定，一定”。如： Where is my wallet？I must have lost it at
home．我的钱包在哪儿？我肯定掉在家里了。
The ground is very wet；it must have rained last
night．地很湿，昨晚一定下雨了。 二、can（could）＋have＋过去分词：用于说明过去某事可能或不可能已经发生，即说话人对过去事情持怀疑或不肯定态度。用于否定句。汉意为“不可能”。如：
I did not see her at the meeting yesterday．She can not have attended it．昨天我在会上没见到她。她不可能参加会议了。
在肯定句中，则表示过去可能做而实际并没有做的事情，有“劝告，责备”的语气。汉意为“可能”。如：
Mary is an hour late—she can have been delayed by fog．玛丽迟到了一小时，可能因为大雾而耽搁了。 三、may（might）＋have＋过去分词：表示对已经发生事情的不肯定推测，即说话人认为过去某事发生的可能性为一般。用于肯定句和否定句。汉意为“大概，也许”，其中might较may语气更弱，把握性更小。如：
He might have gone to see his uncle yesterday evening（but I am
not sure）．昨晚他大概去看他叔叔去了（只是我不敢肯定）。（把握性小）
Don't worry，you may not have been hurt seriously．别着急，你也许伤得不厉害。 四、should（ought to）＋ have ＋过去分词：表示对过去某事情的责备。肯定句表示过去本应发生的事却没有发生或本应该做的事而没有做，汉意为“本应”；否定句表示已发生了本不该发生的事或表示本来不该做的事而做了。汉意为“本不该”。如： You should have handed in your composition yesterday morning．昨天上午你本应把作文交了。（可你却没这么做）
The wall in the bedroom should not have been painted yellow．卧室里的墙本不该漆成黄色。 五、needn't ＋have ＋过去分词：表示做了不必做的事情。汉意为“其实不必，本来不必”。如：
There was plenty of time．She needn't have
hurried．时间很充裕，她其实不必这么匆匆忙忙的。
You needn't have woken her up．It's only six．你其实不必叫醒她。现在才六点。 Can/Could/May/Might/Must表示推测
一、形式与意义
1．could ／may ／might ＋动词原形，表示现在或将来可能……。
The light is on．Mr Baker could ／may ／ might be in his office now．灯亮着，贝克先生（现在）可能在办公室。
There could ／may ／might be a rainstorm tonight．今晚可能有暴风雨。
2．must ＋动词原形，表示现在或将来一定……。
He must live nearby．他（现在）一定住在附近。
I think she must be well in two or three days．我认为两三天后她一定会康复的。 3．could ／may ／might ＋be ＋V-ing，表示现在可能正在……。
They aren't in the classroom．They could ／ may ／might be reading in the library．他们现在不在教室，可能正在图书馆看书。
4．must＋be ＋V-ing，表示现在一定在……。
Tom has finished his homework，and he must be watching TV now．汤姆做完了作业，现在一定在看电视。 5．could ／may ／might ＋have ＋V-ed，表示过去可能……。
He could ／may ／might have misunderstood you yesterday．昨天他可能误解了你。
6．must＋have ＋V-ed，表示过去一定……。
Jack didn't go to work this morning．Something must have
happened to him．今天上午杰克没去上班，他一定出了什么事。 二、要注意的问题
1．can't ／couldn't与may not ／might not的区别
表示推测时，can't ／couldn't意为“不可能”，语气较强，有“满有把握”的含义；may not ／might
not意为“可能不”，语气较弱，有“拿不准”的含义。如：
The man standing over there____ be Tom．He has gone to Japan． A．can't B．may not
此题正确选项为A。从He has gone to Japan．的陈述可知，说话者对“站在那边的人不是Tom”满有把握，并非拿不准。 2．must的否定式
表示推测时，must的否定式是can't，不是 mustn't或needn't。如：
汉：他一定不是英国人。
英：（正）He can't be English．
（误）He mustn't ／needn't be English． 情态动词表推测：过去情况 现在情况
must have done must be
may/might have done may/mightbe
could have done could be
can’t/couldn’thave done can’t/couldn’t be
may not have done may not be
might not have done might not be
can/could have done can/could be肯定句否定句疑问句1. Must I stay here all the time?
No, you needn’t. ( don’t have to )
You may go home.
2. He must be the man you are looking for,
isn’t he?
3. They must be preparing their lessons now,
aren’t they?
4. You must have been to Beijing many times,
haven’t you?
5. She must have been here just a moment ago,
wasn’t she?must的考点主要体现在以下三个方面：1．作“必须”、“应当”、“应该”解时在各种句式中的应用；
2．must表示推测时反意疑问句的构成；3．对过去发生的事情的推测用法及和其它情态动词的区别。
现结合历届高考对其用法作一归纳。1．must可以用来表示义务、命令或必要性，意为“应当”、“必须”、“应该”，其否定式及否定回答要用needn't或don't have to，而不用mustn't。例如：
—Must I tell Tom about it？
—No，you ____ ．I've told him about it already．（MET90）
A．mustn't B．shouldn't C．needn't D．wouldn't
Two years ago，my husband bought me a bicycle．If you live in a town，it is often faster than a car and you _ worry about much（93'上海）
A．must not B．may not C．should not D．don't have to 2．mustn't表示“禁止”、“不许”、“不应该”，表示否定的决断或强有力的劝告。例如：
Johnny，you ____ play with the knife， you ____ hurt
yourself．（NMET96）
A．won't；can't B．mustn't；may
C．shouldn't；must D．can't；shouldn't
If you really want yourself to be in good health，you must
____ always so much．（95'上海）
A．not；be smoking B．not；have smoked
C．not；to smoke D．be not；smoking 3．must可以用来表示推测，意为“必定”、“准是”、“一定是”。作此解时，must的否定式是can‘t，而不是mustn’t。
must后跟be＋n．； be ＋doing；have done sth．表示对现在、正在进行的或过去发生的事情的推测。must这种用法的反意疑问句部分要根据陈述部分的不定式及时间状语，采用相应的助动词形式。
例如：You must be teacher，aren't you？你准是位老师，对不对？ The boy must be watching TV，isn't he？这孩子现在一定在看电视，对吗？
I don't think he must have told you the news yesterday， ____ he？（94'上海）A．must B．did C．has D．does
The Turners must have sold their garden， haven't they？特纳一家准是已经把花园卖掉了，是吗？
从上述题例可以看出：must后的动词是 be时，反意疑问句的助动词用be的一般形式；must表示对有具体的过去时间状语的事情的推测时，反意疑问句的助动词用一般过去时助动词形式；若没有表示过去的时间状语，反意疑问句的助动词须用现在完成时助动词形式。 4．“must ＋have done”表示对过去发生的事情的很有把握的推测，意为“必定已经……”。该结构只用于肯定句，否定句中用 can't ／couldn't have done，疑问句中用can ／ could have done．．．？分别表示对过去事情的否定或疑问推测（注：无mustn't have done结构）。例如：
Where is my pen？I ____ it．（M ET88）
A．might lose B．would have lost
C．should have lost D．must have lost —There were already five people in the car but they managed to take me as well．
—It ____ a comfortable journey．（NM ET95）
A．can't be B．shouldn't be
C．mustn't have been D．couldn't have been 5．must还可以用来表示发生了与说话人的愿望相反或令人不愉快的事情。意为“偏偏”、“（干吗）偏要”。例如：
Must you do it like that，Tom？汤姆，你干吗偏要那么做？
As I was sitting down to supper，the telephone must ring．正当我坐下来吃晚饭时，偏偏电话铃响了。 6．must与have（got）to的区别：一般地讲，must只用于一般现在时，而have（got）to则有更多的时态形式。must往往用于表示从说话者或听话者看来的“必要”，是主观看法；而have（got）to则用来表示来自客观外界的“必要”，含有“不得不”、“被迫”之意，是客观要求。例如：
We must study hard so as to serve our motherland better in future．我们应当努力学习以便将来更好地报效祖国。
You'll have to study harder if you want to pass the college
entrance examinations．如果你想上大学，就必须更加努力地学习。
情态动词典型例题解析
1.-----There were already five people in the car but they managed to take me as well.
-----It ____a comfortable journey. ( )
can't be
B. shouldn't be
C. mustn't have been
D. couldn't have been
D2. Johnny, you ______play with the knife, you ____hurt yourself. ( )
won't ; can't
mustn't ; may
C. shouldn't ; must
D. can't ; wouldn'tB
3. The fire spread through the hotel very quickly but everyone _____get out. ( )
had to
B. would
C. could
D. was able toD4. ------When can I come for the photos ? I need them tomorrow afternoon.
-----They _____be ready by 12 : 00 . ( )
A. can B. should
C. might D. need
B
5. With so much work on hand, you ____to see the game last night. ( )
mustn’t go
B shouldn’t go
C. could have gone
D. shouldn’t have goneD6.They are disappointed at the English party. They say that it ___better organized. ( )
had been
B. had to be
C. must have been
D. could have been
D
7.She must have forgotten about the class _______? ( )
doesn’t she
B. mustn’t she
C. hasn’t she
D. won’ t she
C8. See who’s there ! _______ it be Mary ?
May
Must
Can
willC9.Jenny ____with him at that time, for I was having dinner with her in my home. ( )
can’t have been
B. mustn’t have been
C. must be
D. may be
A
10.Tom’s father promised, “You ___have a new computer if you pass the coming examination,” ( )
can
B. should
C. shall
D. may
C11.---- Did you walked home by yourself last night ?
---- Yes, I did. But I think I _____. ( )
needn’t
B. shouldn’t
C. may not have
D. needn’t haveD
12.----Would you change this bucket for another ? It ______ hold water.
----- OK. I’m really sorry.
won’t
can’t
didn’t
doesn’tA13. You ought to have helped him with his English, ____you ?
A. won’t you
B. ought not you
C. shouldn’t you
D. wouldn’t you
C14.--- I though I ____something burning. ( )
---Really ?
smelled
B. was smelling
C. could smell
D. might smell
C15. She _____out alone at night. ( )
dare not to go
B. dares not go
C. doesn’t dare to go
D. doesn’t dares goCChoose the best answer:
1.---There were already 5 people in the car ,
but they managed to take me as well.
---It ______a comfortable journey.
A.can’t be B. shouldn’t be
C. mustn’t have been D. couldn’t have been
2.---Have you seen our English teacher?
---No,but where ______he______?
A.can ,have gone B. must ,have gone
C. may,have gone D. could , have beenDA3. Peter______come with us tonight, but he isn’t
very sure yet.
A. must B. may
C. can D. will
4. Johnny, you______play with the knife,
you ______hurt yourself.
A. won’t , can’t B. mustn’t , may
C. shouldn’t , must D. can’t ,shouldn’t
5. I didn’t hear the phone. I______asleep.
A. must be B. must have been
C. should be D. should have been
BBB 1．— ____ I put my bike here？
—No．You should put it over there．
A．Will B．Would C．Shall D．Should
2．A computer ____ think for itself，it must be told what to do．
A．can't B．couldn't C．may not D．won't
3．—May I leave now？
—No，you ____ ．
A．needn't B．can't C．mustn't D．shouldn't
4．I'm afraid it ____ rain tonight．
A．can B．could C．may be D．mightcABD5．—Must I finish the work today？
—No，you ____ ．
A．needn't B．mustn't C．may not D．can't
6．He ____ see a doctor before it is too late．
A．must B．must have to C．need D．ought
7．Our students are having an exam． You ____ make so much
noise here．
A．won't B．mustn't C．may not D．needn't
8．Don't be worried ．The news ____ be true．
A．may not B．mustn't C．shan'tD．ought notAABA 9．Come over here and join us in the game， ____ you？
A．shall B．do C．won't D．would
10．Hurry up！The teacher ____ for us at the school gate．
A．must wait B．must be waiting
C．may wait D．must have waited
11．—Look．That ____be Jim．
—No，it ____ be him．He has gone to Beijing．
A．must，mustn't B．may，may not
C．must，can't D．may，won't
12．—Shall I tell John about it？
—No，you ____ ．I've told him already．
A．needn't B．mustn't C．can't D．shouldn'tDBCA 13．I thought you ____ like something to read，so I have bought you some English story-books．
A．may B．could C．might D．Must 14． ____ you succeed in every-thing you do．
A．May B．Can C．Must D．Will
15．—Must I take a bus there？
—No，you ____ ．It's only ten minutes'walk from here．
A．mustn't B．shouldn't C．don't need D．don't have toCAD16．It's nearly seven o'clock ．Jack ____ be here at any moment．
A．must B．need C．should D．have to
17．However difficult it ____ ，I'll try to do it well．
A．may be B．must be C．will be D．shall be
18．—Will you stay for lunch？
—Sorry，I ____ ．My brother is coming to see me．
A．mustn't B．can't C．needn't D．won'tCAB