第二部 专题Ⅱ词汇 ㈦ 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。

考点揭密 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、怀疑猜测，意为“能，会，可以”；can't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 couldn't 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：Please don't./No，you can't /mustn't.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，还可表示委婉客气。

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needn't或don't have to,而不用mustn't， mustn't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”。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needn't，如：Need I do it right now?肯定回答：Yes,you must。否定回答：No,you needn't. 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。

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。 

典型例题解析 【例1】—Where's 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.can't，has gone to D.can't, has been to 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 【例3】—Where is Jack，please? —He______be in the classroom.［2003 杭州］ A.can B.need C.would D.must D

典型例题解析 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.didn't have to C.might D.shouldn't B D 【例5】These books_________out of the reading room.You have to read,them here.［2003，辽宁］ A.can't take B.must be taken C.can take D.mustn't be taken

课时训练 1._________I open the window?It's hot here. B A.Must B.Shall C.Will D.Would 2.Go and ask Mr Liu.He _________tell you. A.may B.can C.would D.could 3._________you please tell me the time please? A.Shall B.Will C.May D.Might 4.—_________I try out all the ideas? —No,you _________. A.Must,mustn't  B.Need,need C.Must,don't have to D.Must,don't 5._________I speak to Mr Green，please? A.Will B.Could C.Must D.Would  B A B C B

课时训练 (B) 6.He said Kate _____come to the party.But I don't think so. A.could B.might C.need D.must 7.—Need I do my lessons right now? —Yes,you_________. A.need B.can C.should D.must 8.—Would you like to go swimming with me this afternoon? —I'd love to.But I'm afraid I___.I have too much work to do. A.can't B.mustn't C.needn't D.may not 9.To make our city more beautiful，rubbish_________into the river. A.needn't be thrown B.mustn't be thrown C.can't throw D.may not throw 10.Don't worry!We can get to the bus station in time and _________the early bus. A.don't miss B.can miss C.will miss D.won't miss (D) (A) (B) (D)

课时训练 A C D A D 11.—Please don't make any noise in the reading room. —_________ A.Sorry,I won't. B.Sorry,I can't. C.Yes, I won't. D.OK,I didn't. 12.—Must I return your digital camera tomorrow.Tina? —No,you_________. A.mustn't B.may not C.needn't D.won't 13.—Would you like some more? —_________I'm full. A.Yes,please. B.I'd love to. C.No,I wouldn't. D.No,thanks. 14.You_________swim in this part of the lake. It's dangerous. A.mustn't B.may not C.needn't D.won't 15.—Your e-mail address again? I______quite catch it. —Hr Zhou @ 263.com. A.don't B.can't C.won't D.didn't A C D A D

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