情态动词详解+例句Word下载.docx

1、请求和允许。句意：酒后驾车是每一位驾车者在我们国家应当遵守的规则。故选B。考点：考察情态动词2Keep up your spirits even if you _ fail hundreds of times.Amust BneedCmay Dshould【答案】C【详解】考查情态动词。A. must必须；B. need需要；C. may可能，或许；D. should应该。即使失败了几百次，也要振作起来。此处表示一种不确定的推测，故选C。3Mr. Baker, some students want to see you. _ they wait here or outside?AMay BSh

2、ould CShall DWill考查Shall的用法。贝克先生，有些学生想见你。他们是在这里等还是在外面等?Shall用于第一、第三人称疑问句中，表示说话人征求对方的意见或向对方请示。故选C。【点睛】Shall的用法Shall作为助动词，一般用于第一人称和We，表示一个将来的动作，构成将来时态。Shall后面接动词原形。例如：（1）I shall think it over and Let you know my idea.我将考虑一下此事，然后告诉你我的想法。（2）We shall have a good time in the park.我们在公园里会玩得很高兴的。常考的特殊用法1. S

3、hall用于第一人称，表示征求对方的意愿。如：What shall we do this evening?2. Shall用于第一、第三人称疑问句中，表示说话人征求对方的意见或向对方请示。Shall we begin our lesson?When shall he be able to leave the hospital?3. Shall用于第二、第三人称，表示说话人给对方命令、警告、允诺或威胁。You shall fail if you dont work harder. （警告）He shall have the book when I finish reading. （允诺）He s

4、hall be punished. （威胁）4I have something important to tell John. But I cant find him.His cell phone is here, so he _ have gone too far.Amustnt BneedntCwouldnt Dcant【答案】D我有重要的事情要告诉John，但是我找不到他。他的手机在这儿，所以他不可能走得太远。根据句意可知，此处是对过去的一种猜测，此处是表达不可能，用cant have done。故选D。5The accident which left 15 people on boar

5、d dead _ if both the angry female passenger and the bus driver had kept calm.Ashould have avoided Bshould be avoidedCcould have avoided Dcould have been avoided考查“情态动词+完成式”。如果愤怒的女乘客和巴士司机保持冷静，这起导致15人死亡的事故本来是可以避免的。could have done“本来能做而没有做”，且句子主语The accident和谓语动词avoid之间是被动关系，结合句意可知答案为D。情态动词+ have done结

6、构：1.“must + have + 过去分词”表示对过去发生的事情或状态进行推测，语气比较坚定，通常只用于肯定句。It must have rained last night,for the ground is wet.2.“can / could + have + 过去分词”表示对过去某种情况的怀疑或不确定。can和could一般用于否定句和疑问句，could的语气较can弱。He cant have finished the work so soon.3.“may / might + have + 过去分词”表示对已发生的动作或存在的状态进行不肯定的推测，might的语气比may弱一点。

7、这种结构主要用于肯定句和否定句，疑问句改用can或could。They may not have known it beforehand.4.“need + have + 过去分词”表示过去做了不必做或不需要做的事情，或过去做某事纯属多余。I neednt have bought so much wineonly five people came.5.“should / ought to + have + 过去分词”表示过去本该做某事但没做，其否定式表示过去不该做某事但做了，这种句式含有不满或责备之意，ought to的语气比should强一些。You ought to / should ha

8、ve studied harder. 你本应该更努力学习的.（但没有）He oughtnt to / shouldnt have done that. 他本来就不该做那件事.（可是做了）6.“would have 过去分词”表示对过去的某种情况进行猜测，或本来要做某事却因某种原因未做成，通常用来说明某一情况，但不像用should或ought to那样含有责备之意。I guess the poet would have been about twenty when she wrote her first poem.Another worker wouldnt have acted like th

9、at.6Its really great to have a computer to store my photos.Dont count on it too much. It _ break down and youd better make a copy of them.Amust BcanCshould Dwill有一台计算机来储存照片真是太棒了。不要过度依赖它。它有时候也会出故障，你最好做一个备份。计算机出故障这是可能的事情，表示客观可能性用can。must肯定，必须；should应该；will表意愿。故B选项正确。7One of our rules is that every stu

10、dent _ wear school uniform while at school.Amight BcouldCshall Dwill考查情态动词辨析。我们其中一条规则要求每个学生在校期间都要穿校服。shall可以表示“命令，警告，强制要求；允诺；法律，规定要做”，结合句意可知C正确。8I often felt troubled in my teens and my grandma _ comfort me, saying “Life is like that, dear”.Awould Bmight Cshould Dmust【答案】A在我十几岁的时候，我经常感到烦恼，我的奶奶会安慰我说，

11、“生活就是这样，亲爱的”。此处是would+动词原形，表示“过去总是做某事”。故选A。9_ the woman with the baby come over? We have a seat here.Thank you, sir. Actually I do have my seat here. But my baby likes to look out of the window.AWould BShallCMust DMay那位抱小孩的女士，要不来这边吧?这儿有个座位。谢谢，实际上我有座位的，只是我的孩子喜欢看窗外。would表示婉转的请求，征求对方的意见，Shall提问一般只用于第一人

12、称，我们常说Shall I.或者 Shall we；may表示请求对方允许。would的用法1.would 最常见的用法是：相对于一个过去时间点的后来“将要”做什么，比如：He said he would meet me at the station. 他说他会在车站接我的。这句中的 would meet 是相对于 said （过去说）之后要做的事情。又如：She thought she would have to ask someone for help. 她当时想，她得找个人帮忙。10Whats wrong with you?Oh, I am sick. I _ so much ice c

13、ream just now.Ashouldnt eat Bmustnt eatCcouldnt have eaten Dshouldnt have eaten考查情态动词和虚拟语气。你怎么了？我生病了，我刚才不应该吃那么多冰激凌。A. shouldnt eat不应该吃；B. mustnt eat禁止吃；C. couldnt have eaten不可能吃；D. shouldnt have eaten本来不应该吃。根据just now可知，是发生在过去，故选D。11Mark _ have hurried. After driving at top speed, he arrived half an hour early.Aneednt Bwouldnt Cmustnt Dcouldnt 考查情态动词。needt have done 本不必要做某事，句意：迈克本不必要着急的。他以全速驾驶后，他早到了半个小时。wouldnt不会，mustnt禁止，couldnt不可能，所以选A。12The weather turned out to be fine. I _ the trouble to carry the umbrella with me.As