must ,have to, mustnt, dont have to

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He must have not had enough money to get something .这个句子中mus

楼主!musthavedone表示肯定推测的现在完成时态(已经完成了过去的动作)must表示肯定推测havedone表示已经做了什么事是现在完成时态加not表示对现在完成时态的否定句中表示肯定没有足够

The key must lie in sleep's psychological component.请问句中的mus

must是情态动词这里是情态动词表推测,翻译成一定是must是情态动词,它没有助动词的情况.Imustfinishmyhomework我必须完成作业.Youmustn'tplayinthestreet

she knew that it must be the baker 为什么不是she knew that it mus

题目中knew表明时态是过去时态这里是宾语从句主句应该和从句的时态保持一致而后面有must所以应该用be

Mr Green thought the man must be deaf and that something mus

Green先生觉得这个男人一定是个聋子,并且他的助听器一定有问题.Somethingwrong表示某东西有问题

We have reached the stage ___we haveto give u the experiment

我们给你提供了锻炼的舞台.再问:Wehavereachedthestagewherewehavetogiveuptheexperiment再答:���ǵ��˲��ò�����ʵ��Ľ׶�

一、请用情态动词(may、shall、should、can、can't、shouldn't、could、must、mus

1、MayIuseyourpen?2、MayIsithere?3、Shallwemeetattheschoolgateathalfpastsixtomorrowafternoon?4、Mikefeel

Before you go out you must finish the work.must换成haveto对吗?

如果没有客观语境是可以的must表示主观即说话者的必须haveto表示客观的不得不这个也是二者的区别

He must be anxious to succeed this time,______?A.is he B.mus

第一题选C第二题选A含有must的反义疑问句,要根据must后面的词来决定.

you must consider how dependent on regular rainfall they mus

1havebeen后没有省略内容,这个句子是个宾语从句,从句的正常语序是theymusthavebeendependentonregularrainfall.由how引导就把dependentonre

Someting must be wrong with your car.为什么反义疑问句是isn't it而不是Mus

Mustn't在任何情况下都表示禁止的意思,否定意义不表示可能性,只有肯定意义才表示很有可能,另外,反义疑问句的后面是谓语动词,而不是副词或者其他,这个句子的谓语是be,没有must就是is了.可以变

must

解题思路:must+have+done既可能是一般过去时有可能是现在完成时,要根据时间判断时态,如果有过去的时间,准是一般过去时,如果没有过去的时间,再通过副词如already,yet,just,则是

把下列句子改为否定句1、He must have heard the had news already.2、Is mus

1、Hecouldn'thaveheardthehadnewsalready.2、Itcan'tbeJane'sdog

it is raining now .so ---stay at home.A.must B.have to C.mus

Bhaveto表示不得不,是客观的条件.没有选择.must必须,表示主观的条件.还有选择的余地.例题,下雨是客观条件,那么我们用haveto

He must have lost hiswatch at the moment,__he?A.didn"t B.mus

本题应该是选A这道题初中英语经常见到.首先你要知道:"musthave+过去分词"表示对过去事情的猜测,这里译成:那时他一定是把表丢了.所以反意问句用didn't.其次,选C的朋友分析的也不错:在英语

补全对话A:look out!You must ____ careful.A car is coming.B:I mus

e;lookafter;staycross;heavy;dangerous;hitis;takefo

帮帮小弟阿!为班级制定一些规章制度,50个字以上 用must和mustn'写 如果好的话有追加分 mustn't mus

1.Everyonemustpickuptheirrubbishandputitintherubbishbinwhenleavingtheclass.Youmustn'tleaveanyrubbish

you must take your turn when you buy the train ticketyou mus

lineup这句话的意思是必须要到你的轮次才能买火车票lineup就是排队买票的意思