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单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,情态动词,1.情态动词的考点,1、can;may;must should;need 等表示判断及,推测；,2、shall;should 的特殊用法；,3、情态动词的应答策略；,4、对过去的判断或推测；,5、dare;need 的用法特点。,2.情态动词的用法特点,1）情态动词不能表示正在发生或已经发生的事,情，只表示期待或估计某事的发生。2）情态动词 除 ought 和 have 外，后面只能接不带,to 的不定式。3）情态动词没有人称，数的变化，即情态动词第,三人称单数不加-s。4）情态动词没有非谓语形式，即没有不定式，分,词，等形式。,f.,3.情态动词表示推测的用法,A.对现在状态和动作的推测,高考题点击：,Helen _ go on the trip with us,but she isnt quite sure yet.,（,05,安徽卷）,A.shall B.must C.may D.can,C,说明：,must 加动词原形表示“必须做”；may 加动词原形表示“可能会做”；can 加动词原形表示“能够做”；can 表示“可能性”时一般用在问句和否定句中。该句的关键在于“but she isnt quite sure yet”。,说明：,neednt 表示“不必”；mustnt 表示“不准”；shant 用在二、三人称中表示“坚决不准”，含有强烈的警告和命令的语气。shouldnt 表示“非常不可能”或“应该不会”。,2.There _ be any difficulty about passing the road test since you have practiced a lot in the driving school.（05上海卷）,A.mustnt B.shant,C.shouldntD.neednt,C,3.Its nearly 7:00.Jack _ be here at any moment.(N 1995),A.mustB.needC.shouldD.can,4.Johnny,you _ play with the knife,you _ hurt,yourself.(N 1996),A.wont,cantB.mustnt,may,C.shouldnt,mustD.cant,should,C,B,must+be 表示“肯定会”；need+be 表示“需要在”；should+动词原形表示“非常有可能”；can 表示可能性只用在否定和疑问句中。,前句表示“你不能玩刀”，此处的“不能”并非表示“能力”，而是表示“允许”，所以只能用“mustnt”；后句表示“可能会伤着你自己”，故用 may。,5.-Are you coming to Jeffs party?,-Im not sure.I _ go to the concert instead.(N 2000),A.mustB.wouldC.shouldD.might,6.Mr.Bush is on time for everything.How _ it be that he was late for the opening ceremony?(2001上海春季),A.canB.shouldC.mayD.must,D,A,此句的关键在于“Im not sure”，既然不能肯定，只能是一种“可能性”。,此句的意思为：“Bush 先生总是很守时，他怎么可能在出席开幕仪式时迟到呢？“can 在否定句或疑问句中表示“可能性”。,7.-Is John coming by train?,-He should,but he _ not.He likes driving his car.,(N 2002),A.mustB.canC.needD.may,8.-I heard they went skiing in the mountains last winter.,-It _ true because there was little snow there.,(N 2002北京),A.may not beB.wont be,C.couldnt beD.mustnt be,D,C,此句的关键是“He likes driving his car.”can 和 may 都可用于否定句中，cant 表示“根本不可能”，语气很强；may not 表示“也许不可能”，语气较弱。,couldnt 的语气比 cant 弱。,B.对过去动作或状态的推测,Tom ought not to _ me your secret,but he meant no harm.(N1993),A.have told B.tell C.be tellingD.having told,2.I told Sally how to get here,but perhaps I _ for her.(N 1994),A.had to write it out B.must have written it out,C.should have written it out D.ought to write it out,A,C,ought to 相当于 should；此句的关键是“He meant no harm”，显然指的是过去的事。,should have written 意指“本该写但实际上并没有写”。,3.-There were already 5 people in the car but they managed to take me as well.,-It _ a comfortable journey.(N 1995),A.cant beB.shouldnt be,C.mustnt have beenD.couldnt have been,4.Susan_ written a report like this.(1995上海),A.can haveB.mustnt have,C.cant haveD.ought to not have,D,C,此句谈论的是过去的经历，故 A、B 不合题意；must 表示判断和推测只能用在肯定句中。,该句的意思为 Susan 不可能写出这样的报告来。ought to have done 的否定式为 ought not to have done。,5.Jack _ yet,otherwise he would have phoned me.(N 97),A.mustnt have arrivedB.shouldnt have arrived,C.cant have arrivedD.neednt have arrived,6.-I stayed at a hotel while in New York.,-Oh,did you?You_ with Barbara.(N 1998),A.could have stayedB.could stay,C.would stayD.must have stayed,C,A,此句的关键是后半句，“otherwise he would have phoned me”，此处为省略了条件句的虚拟语气，表示“如果到了他会打电话给我的”，由此可见，他肯定没到。,此句并不表示判断，而是一个虚拟语气。,4.shall;should 的特殊用法,1.It has been announced that candidates _ remain in their seats until all the papers have been collected.(2002上海),A.canB.willC.mayD.shall,2.Its nearly 7:00.Jack _ be here at any moment.(N 95),A.mustB.needC.shouldD.can,D,C,该句的意思为：“通知说所有的考生必须坐在位置上直到考卷收完了才能离开。”考生坐在位置上不能用“能够、将要、可以”来表示。而 shall 在第二、三人称里面表示一种“命令、警告、承诺”等。,3.-When can I come for the photos?I need them tomorrow afternoon.,-They _ be ready by 12:00.(N 1998),A.canB.shouldC.mightD.need,4.You cant imagine that a well-behaved gentleman _ be so rude to a lady.(2001上海),A.mightB.needC.shouldD.would,B,C,此句应是店主对顾客的承诺。,should 与 how;why 等表示疑问或否定的词连用时，用来表示一种惊奇的心情，意思为“居然、竟然”,5.情态动词的应答,1.-Shall I tell John about it?,-No,you _.Ive told him already.(N 1994),A.needntB.wouldntC.mustntD.shouldnt,2.-Could I call you by the first name?,-Yes,you_.(1998上海),A.willB.couldC.mayD.might,A,C,此句的关键是“Ive told him already”，由此可见，你就不必再对他说了。,在回答“Could I”这类婉客气的请求时，只能回答“Yes,you can 或 may”。不能用 could 或 might。,3.-Will you stay for lunch?,-Sorry,_.My brother is coming to see me.(N 1999),A.I mustntB.I cantC.I needntD.I wont,4.-Write to me when you get home.,-_.(2001北京春季),A.I mustB.I shouldC.I willD.I can,B,C,此句的关键是“My brother is coming to see me.”所以我不能在这儿吃饭。,在回答对方的请求或命令时，应该用“Yes,I will.”而不能使用 would 或 should。,6.情态动词的其它一些用法,I wonder how he _ that to the teacher.(1996,上海,),A.dare to say B.dare saying,C.not dare say D.dared say,2.The fire spread through the hotel very quickly but everyone,_ get out.(N 1997),A.had toB.wouldC.was able toD.could,3.When he was there,he _ go to that coffee shop at,the corner after work every day.(1996,上海,),A.wouldB.shouldC.had betterD.might,D,C,A,注意比较 dare 和 need 的两种词性的不同用法。,注意比较 could 与 was able to 的用法区别。,would 在此处表示过去惯常的动作。,Good-bye!,
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