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1、第二部 专题词汇 情态动词,考点揭密典型例题解析课时训练,考点揭密,1.掌握情态动词的定义：表示可能、怀疑、允诺、愿望、义务、必要、猜测等的动词是情态动词。2.掌握情态动词的特征：情态动词与其他动词是有区别的，它本身有一定的词义，表示说话人对某一动作的看法和态度，但不能单独作谓语，必须和另一个动词原形一起构成谓语；情态动词没有人称和数的变化，含有情态动词的句子改为问句和否定句时，无需添加助动词，可直接构成问句和否定句。,3.掌握常用情态动词can,could,may,might,must,need,shall,will,should,would等的用法。(1)can 可表示能力、允许、可能性、
2、怀疑猜测，意为“能，会，可以”；cant意为“不会，不能，不可以”，还有“不可能”之意。could为can的过去式，用法与can类似，常用于过去时中；could还可用于现在时中表示委婉客气，相当于can；could也可表示惊讶怀疑，不相信，如：He couldnt be a thief.,(2)may表示允许、也许，意为“可以，也许，可能”。对may的一般问句的回答，肯定回答一般是：Yes,please./Certainly/Sure等，否定回答一般是：Pleasedont./No,youcant/mustnt.might是may的过去式，与may用法类似，常用于过去时中；用在疑问句中，还可表
3、示委婉客气。,熟悉情态动词委婉用法：could,would,might等情态动词均有委婉用法，它们不是过去式而是表示语气委婉、客气、礼貌，常用与疑问句，并多用于习惯表达，如would you please,would you mind,would you like to等，might还可以用于肯定句表示推测，表示可能性小，might和could表示征求对方意见时，回答必须还成may,can.,例1：-Could I borrow your dictionary?Yes,of course you_.A.mightB.will C.canD.should,析：选C。该句用can的委婉表达式cou
4、ld 来征求对方意见，could 和might通用，但回答时必须还成can或may，因此该题不选A.,例2：_you mind my smoking here?A.ShouldB Could C.MightD.Would,析：选D。征求对方意见我是否在这儿吸烟，语气理应委婉，所以应选委婉的表达方式would you mind来征求对方意见。,考点揭密,(3)must 表示必须要做的事，意为“必须，应该”。must一般问句的否定回答用neednt或dont have to,而不用mustnt，mustnt意为“不可以，不能”，表禁止，不许可。另外，must还可表示有把握的推测，意为“一定、肯定”
5、。must的过去式还是must。(4)need 作情态动词主要用于问句和否定句中，意为“必要”。need一般问句的肯定回答用 must，否定回答用neednt，如：Need I do it right now?肯定回答：Yes,you must。否定回答：No,you neednt.need作行为动词，有人称、数和时态的变化，后接动词要加to do不定式。,例1：-Must I start at once?No,you_.A.needntB.mustnt C.cantD.wont,析：A。由语境可知该答句表示“不必”，而mustnt表示“不准、禁止”，不符合语境，显然应使用neednt表示“不
6、必”，但肯定句回答继续用must。,考点揭密,(5)shall,will用来征求对方意见，shall用于第一人称，will用于第二人称，用来表示意愿；shall用于第二、第三人称，will用于第一人称。(6)would,should为will，shall 的过去式，would用于现在时，表示委婉提出请求、建议或看法，如Would you please not do it again?should还有“应该”的意思，但语气比must 弱。,例1：-_I tell John about it?-No,you neednt.I have told him already.(NMET94)A.Shal
7、lB.Will C.CanD.May,析：选A。从回答句“No,you neednt”的语境可知，问句征求对方意见，表示“需要”而且用语第一人称，要使用shall。,例2：_you please help me with my English?A.WouldB.Do C.ShallD.Can,析：A。次句表示追求对方意见，有“愿意”之意，而且又用于第二人称，应选用would。,例1：-Are you coming to Jeffs party?-Im not sure.I _go to the concert instead.(NMET2000)A.mustB.would C.shouldD.
8、might,析：选D。Im not sure.的语境表明把握性不大，当然我去参加音乐演奏会的可能性就比较小了，故不用must应用might,例 2：-_the news be true?No,it_be true.A.Can,cant B.May,cantC.May,may not D.Must,mustnt,析：选A。因为前半句是疑问句，后半句为否定句，两空都不能使用may/might 和must，应而用can和cant。,例2：-Need I hand in my exercise book at once?Yes,you_.A.mustB.need C.canD.will,析：选A。根据
9、规定need用于一般疑问句作肯定回答应换成must,而作否定回答时，使用need的否定式neednt。,【例1】Wheres Mr Li?I have something unusual to tell him.You _ find him.He_Japan.2003 黑龙江 A.may not,has gone to B.may not,has been to C.cant，has gone to D.cant,has been to,典型例题解析,【例3】Where is Jack，please?He_be in the classroom.2003 杭州 A.can B.need C.w
10、ould D.must,C,【例2】Could I look at your pictures?Yes,of course you _.2003 武汉 A.could B.can C.will D.might,B,D,【例4】The boy said he had to speak English in class,but he_ speak it after class.2003，广州A.could B.didnt have to C.might D.shouldnt,B,【例5】These books_out of the reading room.You have to read,the
11、m here.A.cant takeB.must be taken C.can takeD.mustnt be taken,D,1._I open the window?Its hot here.A.Must B.Shall C.Will D.Would2.Go and ask Mr Liu.He _tell you.A.may B.can C.would D.could3._you please tell me the time please?A.Shall B.Will C.May D.Might4._I try out all the ideas?No,you _.A.Must,must
12、nt B.Need,need C.Must,dont have to D.Must,dont5._I speak to Mr Green，please?A.Will B.Could C.Must D.Would,B,A,B,C,B,6.He said Kate _come to theparty.But I dont think so.A.could B.might C.need D.must7.Need I do my lessons right now?Yes,you_.A.need B.can C.should D.must 8.Would you like to go swimming
13、 with me this afternoon?Id love to.But Im afraid I_.I have too much work to do.A.cant B.mustnt C.neednt,(B),(D),(A),9.To make our city more beautiful，rubbish_into the river.A.neednt be thrown B.mustnt be thrownC.cant throw D.may not throw10.Dont worry!We can get to the bus station in time and_the ea
14、rly bus.A.dont miss B.can miss C.will miss D.wont miss,(B),(D),11.Please dont make any noise in the reading room._A.Sorry,I wont.B.Sorry,I cant.C.Yes,I wont.D.OK,I didnt.12.Must I return your digital camera tomorrow.Tina?No,you_.A.mustnt B.may not C.neednt D.wont,A,C,14.You_swim in this part of the lake.Its dangerous.A.mustnt B.may not C.neednt D.wont15.Your e-mail address again?I_quite catch it.Hr Zhou.A.dont B.cant C.wont D.didnt,A,D,See you next time!,
