Must 的用法

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must用法详解

must用法详解

must用法详解今天给大家带来must用法详解,我们一起来学习吧,下面就和大家分享,来欣赏一下吧。

must用法详解1. 表示“必须”、“一定要”(1) 可用于肯定句、否定句或疑问句;用于否定句时,mustn’t 的意思是“一定不要”、“不能”,而不是“不必”。

如:You must finish it today. 你一定要在今天完成它。

You must see the doctor. 你一定要看医生。

Must you go so soon? 你一定得这么早就走吗?We mustn’t think only of ourselves. 我们可不能只考虑自己。

(2) 主要表示现在或将来,但有时(如在间接引语中)也可表过去(=had to)。

如:She asked if she must (had to) leave. 她问她是否一定要离开。

(3) 对于must 开头一般疑问句,若要作否定回答,可用needn’t、dont have to,不用mustn’t。

如:"Must I come over tonight?" "No, you needn’t." “我今晚必须过来吗?”“不必。

”(4) 其后可接被动结构或进行形式。

如:Something must be done to stop it. 必须采取措施来阻止它。

I think I must be going. 我想我得走了。

2. 表示推测意为“准是”、“一定是”,注意以下几点。

如:(1) 通常只用于肯定句,在否定句或疑问句用can 代之。

如:It must be true. 那一定是真的。

比较。

如:Can it be true? 那可能是真的吗? / It can’t be true. 那不可能是真的。

(2) 后接动词原形,表示对现在情况的推测。

如:He must be wrong. 他一定错了。

The man must have a lot of money. 这个人一定有不少钱。

must的用法

must的用法

must的用法must有必须;应当;很可能的意思,那么你知道must的用法吗?下面跟着店铺一起来学习一下,希望对大家的学习有所帮助!must的用法:表示义务、意图或建议:必须,应该I must leave at six today. 我今天必须六点钟离开。

I must write a letter to the head teacher. 我非得给校长写封信不可。

(强烈意图)You must go and see that film——you'd really enjoy it. 你得去看看那部电影,你会真的喜欢它的。

(提建议)表示推测:必定,一定The light is still on, so he must be at home. 灯还是亮的,他一定在家。

The light was out. They must have gone to bed. 灯都熄了,他们必定睡了。

注意:1. must表示推测时的否定式是can't或couldn't(不可能) ,因为must只用于肯定句,语气很强。

2. 若对过去情况的推测用must have加过去分词。

表示主张:硬要,一定要If you must go, at least wait till the rain stops. 如果你坚持要走,至少也要等雨停了再走。

The machine must break down at this busy hour. 正忙的时候机器偏偏坏了。

表示不可避免性:必然要,必定会All men must die. 人总有一死。

“must+be”“must+be+ v -ing”“must+表示状态的动词”可表示现在或一般的情况; “must+have”表示过去的情况; “must+表示动作的动词”表示将来的情况。

must可表示讽刺或抱怨,此时须以you为主语。

must表示客观上不愉快的情况,意为“偏偏”。

must的用法总结归纳

must的用法总结归纳

must的用法总结归纳must是一个常见的情态动词,用法非常灵活。

它可以用来表达推测、推理、必然性、义务等多种含义。

下面是关于must用法的详细总结:1.表达主观推测或确信:- We must be quiet in the library.(在图书馆里我们必须保持安静。

)- He must be very tired after working all day.(他整天工作,一定很累。

)- They must have arrived at the airport by now.(他们现在一定已经到达机场了。

)2.表达客观推理或确信:- The road is wet, it must have rained.(路面潮湿,一定下过雨。

)- The shop is closed, it must be Sunday.(商店关门了,一定是星期天。

)- The house is empty, they must have moved out.(房子空着,他们一定搬走了。

)3.表达必然性(根据规则、自然法则等):- Water must boil at 100 degrees Celsius.(水一定在100摄氏度沸腾。

)- Plants must have sunlight to grow.(植物生长必须有阳光。

)- You must wear a seatbelt when driving.(开车时必须系安全带。

)4.表达义务、强制或责任:- We must follow the rules.(我们必须遵守规定。

)5.表示建议或命令:- You must read this book, it's really interesting.(你必须读这本书,它非常有趣。

)- You must stop smoking for your health.(为了健康,你必须戒烟。

)6.表达事实或不可怀疑:- It must be cold outside, everyone is wearing coats.(外面一定很冷,大家都穿着外套。

must情态动词用法

must情态动词用法

must情态动词用法"Must" 是一种情态动词,用于表示推测、责任、义务、建议等意义。

以下是一些常见的 must 的用法:1. 表示推测:- They must be at home.(他们一定在家。

)- The room looks tidy, so she must have cleaned it.(房间看起来整洁,她一定打扫了。

)2. 表示强烈的义务或责任:- You must finish your homework before you go out to play.(你必须在出去玩之前完成作业。

)- We must help those in need.(我们必须帮助那些需要帮助的人。

)3. 表示必然的推论:- If it's raining, then he must have taken an umbrella.(如果下雨了,他肯定带了把伞。

)4. 表示命令或律令:- You must stop here.(你必须在这里停下。

)- Citizens must abide by the state laws.(公民必须遵守国家法律。

)5. 表示强烈的建议:- You must try this new restaurant.(你一定要试试这家新餐厅。

)需要注意的是,must 在疑问句和否定句中使用上有一些限制,通常用 "have to" 来代替:- Do you have to go to the meeting?(你必须去开会吗?)- She doesn't have to work on Sundays.(她不必在星期天工作。

)。

must用法归纳与总结

must用法归纳与总结

must用法归纳与总结must是英语中的一个常用词,它可以用于不同的语境中表达不同的含义。

下面将对must的用法进行归纳和总结,包括用于陈述句、疑问句、否定句和条件句的情况。

1. 用于陈述句表示强烈的建议或要求在陈述句中,must可以表示强烈的建议或要求。

例如:You must finish your homework.(你必须完成你的作业。

)We must go to the airport immediately.(我们必须立即去机场。

)在这种语境中,must强调了建议或要求的强烈程度,表达了说话者对听者的期望或要求。

2. 用于疑问句表示询问或反问在疑问句中,must可以表示询问或反问。

例如:Must I finish my homework?(我必须完成我的作业吗?)Must you go to the airport immediately?(你必须立即去机场吗?)在这种语境中,must表示对某个问题或情况的询问或反问,表达了听者对说话者建议或要求的疑问或不理解。

3. 用于否定句表示禁止、阻止、不许、必须在否定句中,must可以表示禁止、阻止、不许、必须等含义。

例如:You must not smoke in the elevator.(禁止在电梯内吸烟。

)You must not park here.(禁止在此停车。

)在这种语境中,must表示禁止、阻止、不许、必须等含义,表达了说话者对某些行为或操作的禁止或限制。

4. 用于条件句表示必须、必要在条件句中,must可以表示必须、必要的含义。

例如:If you want to go to the party, you must RSVP by Friday.(如果你想参加聚会,必须在星期五之前回复。

)If you want to graduate, you must pass all your exams.(如果你想毕业,必须通过所有的考试。

must 的用法

must 的用法

must 的用法
must是一个情态动词,用于表示强烈的命令、义务或推断。

它可以用于不同的语境中,包括肯定陈述、否定陈述、疑问句和条件句中。

下面是一些具体的用法:
1. 表示强制性的命令或建议:You must wear a helmet when riding a motorcycle.(骑摩托车时必须戴头盔。


2. 表示责任或义务:I must finish this report tonight.(我必须今晚完成这份报告。


3. 表示非常有可能的推断:He must be exhausted after running a marathon.(他跑完马拉松一定累坏了。


4. 在条件句中表示必须满足的条件:You must pass the exam if you want to graduate.(如果你想毕业,你必须通过考试。


5. 在虚拟语气中表示强烈的愿望或建议:I wish I could go on vacation.(我真希望能去度假。


6. 表示对某种事实的确认:That must be the bus we need to take.(那一定是我们要坐的那辆公交车。


总之,must是一个常用的情态动词,用于表示强烈的命令、义务或推断。

在语境中正确使用must可以让我们的表达更加清晰和准确。

- 1 -。

must的用法总结

must的用法总结

must的用法总结一、Must的基本用法Must是一个英语情态动词,用于表示强烈建议、必须或者应该做某事。

在句子中通常用作情态动词,可以和动词原形一起构成肯定句、否定句、疑问句等各种句式。

1. 肯定句:Must + 动词原形例如:- You must arrive on time for the meeting tomorrow.明天开会你必须准时到达。

- We must study hard for the upcoming exam.我们必须为即将来临的考试努力学习。

2. 否定句:Must + not + 动词原形例如:- You must not miss the deadline for submitting the report.你不能错过提交报告的截止日期。

- They must not forget to lock the door when they leave.离开时他们不要忘记锁门。

3. 疑问句:Must + 主语 + 动词原形?例如:- Must we finish this task by tomorrow?我们必须明天完成这项任务吗?- Must I bring my own laptop to the workshop?我必须带自己的笔记本电脑参加研讨会吗?二、Must的用法总结1. 表示根据道德规范或者法律规定必须做或者不做某事。

例如:- You must obey the rules of the library.你必须遵守图书馆的规定。

- Citizens must pay taxes on time.公民必须按时缴纳税款。

2. 表示根据逻辑、常识或者经验判断,某种行为是非常确凿的真理或者必然的结果。

例如:- The sun must rise in the east and set in the west.太阳肯定从东方升起,西方落下。

- You must be tired after working for such a long time.在工作了这么长时间之后,你一定累了。

must用法情态动词

must用法情态动词

must用法情态动词“must”作为情态动词,通常用来表示必然性、必要性和义务,其用法有以下几种情况:1.表示“必须”、“一定”的意思,用于肯定句中,用于疑问句中表示责备或不耐烦。

例如:•You must be careful when you cross the street. (你过马路时一定要小心。

)•Must I finish my homework now? (我必须现在完成作业吗?)2.表示推测,意为“一定”、“准是”、“必然会”,只用于肯定句中,用于否定句中表示推测。

例如:•He must be very tired after such a long walk. (走了这么长时间,他一定很累了。

)•The train can't be late. It's always on time. (火车不可能晚点,它总是准点的。

)3.表示过去的事情或过去的推测,意为“一定”、“准是”、“必然会”,只用于肯定句中,用于否定句中表示过去情况的推测。

例如:•He must have studied hard before he passed the exam.(他考试一定考得很好。

)•They couldn't have missed the train. It arrived on time. (他们不可能错过火车,因为它准时到达了。

)4.表示强烈的建议或命令,意为“必须”、“一定要”,用于肯定句中,用于否定句中表示强烈的不满或抱怨。

例如:•You must come to see me before you leave. (你一定要在离开前来看我。

)•You mustn't forget to turn off the lights before you leave. (你千万不要忘记关灯。

)5.表示推测或可能性的程度,意为“大概”、“或许”、“极有可能”,用于肯定句中,用于否定句中表示不太可能的推测。

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Must 的用法:
1. must (“必须”, 主观上的) / have to (“不得不”, 客观上的)
2. must / need 提问, 其肯定答语用must , 否定答语用needn’t
3. mustn’t 表示禁止
4. 用于猜测句型, 表语气很强的肯定句中. “一定….”
5. 表示人的一种固执“偏要”“非…不可” (指做令人不愉快的事)
6. 做名词: “必须有的东西/做的事”
Exercises:
1. I can’t find my key. It ____ in my offi ce.
A. can be forgotten
B. can be left
C. must have been forgotten
D. must have been left
2.---What’s that terrible smell?
---Oh, I forgot about the chicken! Go and look, it ______!
A. may be burnt
B. ought to be boiling
C. can be cooking
D. must be burning
3. “Oh, peter, you are running a high fever. You ____ go to see a doctor or you’ll miss the entrance exam.” Said the teacher.
A. must
B. should
C. might C. could
4.---_____ you make so much noise?
---Sorry. I’ll take care n ot to.
A. Can
B. Must
C. May
D. Would
5.I really _____ go ; I shall miss my bus if I don’t hurry.
A. can
B. might
C. will
D. must
6. You _____ use the office phone for private calls during working time. It’s not permitted.
A. need n’t
B. mustn’t
C. may not
D. won’t
7.---Wake up, Peter. Time to rise.
---I ____ asleep while I was reading
A. must fall
B. could fall
C. must have fallen
D. should have fallen
8.---_____ I book a table for dinner a few days ahead of time?
---Yes, you ____. The restaurant is always full, especially during the holidays.
A. Must, will
B. Must, can
C. Shall, shall
D. Shall, must
9.Little Tom ____ have finished his homework; otherwise, he wouldn’t be listening to music.
A. can
B. shall
C. must
D. would
10.Apologize? ______ I ? It was all her own fault.
A. May
B. Shall
C. Should
D. Must
11.So long as there are more people than needed, there _____ be tests to help make a fairer decision.
A. can
B. may
C. shall
D. must
12.____ you take a taxi? There is still plenty of time.
A. Can
B. Will
C. Must
D. Should
13.---Tom is never late for work. Why is he absent today?
---Something ____ to him.
A. must happen
B. should have happened
C. could have happened
D. must have happened
14.The examination _____ very difficult since only a few of the students passed.
A. could have been
B. must have been
C. might have been
D. would have been
15.---I phoned Tom yesterday evening , but nobody answered the phone.
---Oh, he _____ .
A. must be sleeping
B. must slept
C. must have been sleeping
D. could be sleeping
16.Don’t interrupt me, John. ____ you force me to tell you the truth at the moment?
A. Might
B. Must
C. Should
D. Will
17.All my family are looking forward to meeting you. You ____ come over and have dinner with us this weekend.
A. will
B. must
C. may
D. shall
18.---Can I surf the Internet tonight?
---Sure. However, in no case _____ you do it alone.
A. could
B. might
C. must
D. need
Answers: 1-5 DDABD 6-10 BCDCD 11-15 DCDBC 16-20 BBC。

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