在线英语听力室

CET4语法:情态动词must用法详解

时间:2012-03-21 06:32:37

(单词翻译:单击)

   1) must表示必须,否定回答时用needn't. mustn't表示不许可。

  【例如】
  You must get to the station before 3, otherwise you will miss the train.Must I hand in my homework tomorrow?
  No, you needn't. You can turn it in the day after tomorrow.
  You mustn't smoke in the hospital.
  2) must用于肯定句,可以表示推测,翻译为:一定或想必。后面接动词的一般时,表示对现在的推测,接动词的完成式,表示对过去的推测。对过去的推测是考试的重点。
  【例如】
  She must live near here, for she comes to work on foot.
  She was absent from class. There must have been something wrong with her.
  The light was out. They must have gone to bed.
  Mary's score on the test is the highest in her class. She ____ have studied very hard.(CET-4 1998.1)
  A) may
  B) should
  C) must
  D) ought to
  “must +不定式完成式”表示对过去发生事情的推测。题意为:玛丽的考试成绩全班第一,她学习一定很刻苦。答案为C.

分享到:


点击收听单词发音收听单词发音  

0 absent pIByL     
adj.缺席的,缺少的;vt.使缺席;prep.没有
参考例句:
  • I was absent last week.我上星期缺席了。
  • Some students are absent today.今天有些学生缺席了。
0 before sQwyg     
prep./conj.在…以前
参考例句:
  • She needs the work done before tomorrow.她必须在明天以前找人完成这项工作。
  • I must finish this letter before I go home.我必须在回家以前写完这封信。
0 hard BeDxI     
adv.努力地;adj.硬的;困难的
参考例句:
  • The work is much too hard.这工作太难了。
  • She works hard at school.她在学校努力学习。
0 highest mrzzNd     
adj.最高的;高的( high的最高级 );高尚的;高地的;高级的
参考例句:
  • All the materials used were of the highest grade. 使用的材料全是优质品。
  • What's the highest mountain in the US? 美国哪座山最高?
0 homework Fczxk     
n.家庭作业,课外作业
参考例句:
  • We do our homework now.我们现在做家庭作业。
  • I am busy doing my homework right now.我现在正忙着在做课外作业。
0 hospital IccxB     
n.医院
参考例句:
  • Please take me to the hospital.请送我到医院。
  • She found herself in hospital.发现自己躺在医院里。
0 light 61SxT     
n.光,光亮,灯;adj.轻的,光亮的,容易的;v.点燃,著火,变亮
参考例句:
  • The sun gives light and heat.太阳发出光和热。
  • The traffice light was green.交通信号灯是绿色。
0 live B0jx4     
v.住,居住;生活
参考例句:
  • I live in the north of China.我居住在中国北部。
  • We can not live without water.我们没有水不能生存。
0 near 3GRxr     
prep.在…附近;靠近
参考例句:
  • Is her school near her home?她的学校靠近她家吗?
  • The zoo is near the school.动物园离学校很近。
0 otherwise CJhx6     
adv.另外,用别的方法;在其他方面;要不然,否则
参考例句:
  • You'd better go now,otherwise you'll miss the train.你最好现在就走,要不然就赶不上火车了。
  • He is noisy,but otherwise a nice boy.他爱吵闹,但在其他方面却是个好孩子。
0 ought XJKx4     
v.aux.应该,大概;n.责任
参考例句:
  • Ought I to hand in the homework today?我应当在今天交上作业吗?
  • They ought to be here by now.他们这个时候该到了。
0 score 7ZLx9     
n.(比赛中)得分,分数;(测验中)成绩
参考例句:
  • The score is four to three.比分是四比三。
  • Her score on the test was 95.她的考试成绩是95分。
0 smoke CxUwM     
n.烟;v.吸烟;冒烟
参考例句:
  • You mustn't smoke here.你不能在这里吸烟。
  • Please open the door and windows to let the smoke out.请打开门窗散散烟。
0 something rwmw2     
pron.某事,某物;被视为有意义的事物
参考例句:
  • Something is wrong with the machine.那机器有点问题。
  • She seems worried about something.她似乎为某事担心。
0 station vuKwc     
n.车站,站,位置;v.安置,配置
参考例句:
  • This is Taipei railway station.这里是台北火车站。
  • The station is two miles away.车站离这里两英里。
0 studied btQw2     
adj.有计划的;故意的;深思熟虑的;精通的v.学习,研究( study的过去式和过去分词 );想出;详细地检查;背诵(台词等)
参考例句:
  • He studied politics and economics at Yale. 他曾在耶鲁大学学习政治学和经济学。
  • We studied that book in matric. 我们毕业那年学了那本书。
0 test VppwK     
n.测试,试验;v.测试,试验,接受测验
参考例句:
  • I have to study the book for a test tomorrow.明天要考试,我得看书。
  • The teacher will test the class on spelling today.今天,老师要对这个班进行一次拼写测验。
0 train 8now0     
n.火车
参考例句:
  • I love travelling by train.我喜欢乘火车旅行。
  • We usually go by train.我们通常坐火车去。
0 turn rKSzi     
v.(使)转动,(使)旋转;(使)变化;n.一次机会
参考例句:
  • Turn left and go straight on.左转弯然后笔直走。
  • It's your turn to be on duty tomorrow.明天轮到你值日了。
0 was bglwv     
v.(is,am的过去式)是,在
参考例句:
  • He said he was right.他说他是正确的。
  • He was cold and hungry.他又冷又饿。
0 work OoOyu     
n.工作,劳动
参考例句:
  • We all work hard.我们都努力工作。
  • Her work is to take care of the children.她的工作是照料好孩子。
0 wrong ufQwG     
adj.错误的,有毛病的
参考例句:
  • What's wrong with your ears?你的耳朵有什么问题?
  • She married the wrong person.她嫁错了人。