must need的用法

Could I come to see you tomorrow?
Yes, you can. （否定答语可用No, I'm afraid not.）
用法: ①表示请求或允许 : May I go home，please? (可以)
Yes, you may. No, you _m_u_s_t_n_’_t_/_you can’t.
must开头的疑问句，其否定回答通常用 don‘t have to 或needn’t 。而不用mustn't
---Must I finish my homework first? --- Yes, you must. --- No, you don't have to/ needn't.
(需要) 既可以做情态动词, 也可以做实意动词 用法: ① 情态动词 (need do sth) I need buy a big house.
9. You ___A_____do it if you really don't
want to.
A. needn’t B. mustn’t
C. can’t
D. couldn’t
10. — Could I borrow your dictionary?
— Of course you _A_____.
5. — Fifty dollars for such a T-shirt!
You __A__ be joking!
— I’m serious. It’s made of silk.
A. must
B. need
C. may
D. can
6. — Have you decided where to go for

need的用法总结分析以下是小编为大家整理的need的用法总结，希望能帮助大家更好地认识need这个单词，提高英语水平。

need 的用法：“need”既可以作情态动词，也可以作实义动词，但是它们的用法不同。

作为情态动词的“need”的用法与其他情态动词“can”，“may”，“must”的用法基本相同：在限定动词词组中总是位居第一，没有非限定形式，即没有不定式、-ing分词或-ed分词等形式;第三人称单数现在时没有词形变化;情态动词之间是相互排斥的，即在一个限定动词词组中只能有一个情态动词。

下面是“need”作为情态动词的用法：一、need表示“需要”或“必须”，通常用于否定句和疑问句。

例如：1.You needn't do it again.你不需要再做了。

2.He needn't worry about it.这件事他无需担心。

3.Need he do this homework first?他需要先做这些作业吗?4.Need they fill in the form?他们需要填表吗?二、needn't后的不定式间或也能用进行式或被动语态。

例如：1.He needn't be standing in the rain.他不必要站在雨中。

2.We needn't be waiting in this place.我们不必要在这儿等。

3.The hedges needn't be trimmed thisweek.本周树蓠不必要整修。

三、在否定句中，可以用need的否定形式+不定式完成体。

例如：1.We needn't have worried.其实我们不必要慌。

2.You needn't have mentioned it.你本来不必提起这件事。

3.You needn't have said that when he asked.当他问的时候，你其实不必要说。

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’t3. 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 forgottenB. can be leftC. must have been forgottenD. must have been left2.---What’s that terrible smell?---Oh, I forgot about the chicken! Go and look, it ______!A. may be burntB. ought to be boilingC. can be cookingD. must be burning3. “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. mustB. shouldC. might C. could4.---_____ you make so much noise?---Sorry. I’ll take care n ot to.A. CanB. MustC. MayD. Would5.I really _____ go ; I shall miss my bus if I don’t hurry.A. canB. mightC. willD. must6. You _____ use the office phone for private calls during working time. It’s not permitted.A. need n’tB. mustn’tC. may notD. won’t7.---Wake up, Peter. Time to rise.---I ____ asleep while I was readingA. must fallB. could fallC. must have fallenD. should have fallen8.---_____ 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, willB. Must, canC. Shall, shallD. Shall, must9.Little Tom ____ have finished his homework; otherwise, he wouldn’t be listening to music.A. canB. shallC. mustD. would10.Apologize? ______ I ? It was all her own fault.A. MayB. ShallC. ShouldD. Must11.So long as there are more people than needed, there _____ be tests to help make a fairer decision.A. canB. mayC. shallD. must12.____ you take a taxi? There is still plenty of time.A. CanB. WillC. MustD. Should13.---Tom is never late for work. Why is he absent today?---Something ____ to him.A. must happenB. should have happenedC. could have happenedD. must have happened14.The examination _____ very difficult since only a few of the students passed.A. could have beenB. must have beenC. might have beenD. would have been15.---I phoned Tom yesterday evening , but nobody answered the phone.---Oh, he _____ .A. must be sleepingB. must sleptC. must have been sleepingD. could be sleeping16.Don’t interrupt me, John. ____ you force me to tell you the truth at the moment?A. MightB. MustC. ShouldD. Will17.All my family are looking forward to meeting you. You ____ come over and have dinner with us this weekend.A. willB. mustC. mayD. shall18.---Can I surf the Internet tonight?---Sure. However, in no case _____ you do it alone.A. couldB. mightC. mustD. needAnswers: 1-5 DDABD 6-10 BCDCD 11-15 DCDBC 16-20 BBC。

[need的用法]can、may、must、need的用法篇一: can、may、must、need的用法can、may、must、need的用法can①表示能力，“能，会”。

[）Eg : Can you play basketball?②表示怀疑，猜测，常用于否定句或疑问句。

Eg :Li hua can’t be in the classroom.③表示请求，允许，多用于口语，译“可以”= may.Eg: you can go now.④can 开头的疑问句，肯定句，否定句用can或can’t.may①表示推测，“可能，也许”，用于肯定句。

Eg: He may come tomorrow.②表示请求，“许可,可以”。

Eg:May I borrow your book?注：表示请求，许可时，主语为第一人称的一般疑问句，否定回答用mustn’t“不可以，禁止，不许”,不用may not“可能不”。

③表示祝愿。

Eg :May you success.must①表示“必须，应该”。

②表示推测“一定”。

Eg:There is someone knocking at the door.It must be Jim.③否定句中，mustn’t 表示禁止，“不允许”。

④以must 开头的疑问句，肯定句回答用must,否定回答用needn’t , 表示“不需要，不必”=“don’t have to”.⑤表示“偏偏”。

Eg: Must you play the piano at this time.need①情态动词：+do,用need 提问或回答，肯定句回答用must ,否定句回答用needn’t.Eg: Y ou needn’t come to school so early.②实义动词：+to do ,用助动词提问和否定。

③+doing 表示被动。

④needn’t have done 表示没必要做某事但是做了。