高中英语语法篇内容：情态动词A.教学目的:复习高考常见的情态动词的重要考点B.教学过程情态动词的重点考点表示“能力”“许可”的can/couldmay/might①表示能力,用can/could意思是“能够”②在肯定句中,could只表示过去能做某事，但不一定做到了，而was/wereableto指过去实际上能做到了。③注意：cannot….enoughcannot(never)…too的意思。①Acomputer_____thinkforitself;itmustbetoldwhattodo.A.can’tB.mustn’tC.maynotD.mightnot②Thefirespreadthroughthehotelveryquicklybuteveryone_____getout.A.hadtoB.wouldC.couldD.wasableto③Youcan________carefulwhilecrossingthestreet.A.neverbeB.nottooC.everbetooD.neverbetoo表示许可时用may/might,can/could都可以，但在问句中用could…?或might…？以使口气委婉客气，其肯定回答要用can或may或其他方式。其否定回答用mustn’t表示禁止，不许可。或其他方式。①-CouldIcallyoubyyourfirstname?-Yes,you______A.willB.couldC.mayD.might②Johnny,you_____playwiththeknife,you___hurtyourself.A.won’t/can’tB.mustn’t/mayC.shouldn’t/mustD.can’t/shouldn’t③-MayItakethisbookoutofthereadingroom?-No,you.Youreaditinhere.（陕西卷）A.mightn’tB.won’tC.needn’tD.mustn’t表示推断的canmaymust都可用在肯定句中。注意语气①must“一定”，语气最肯定may“可能”语气不肯定，might/could更不肯定。②can表客观上的可能性，意思是“随时会”“有时可能”,题干中会用sometimes,attimes,atanytime暗示。③maywell很可能，极有可能，表示猜测。当表示猜测时，Eg.Hemustbeinhisoffice,asheisalwaysbusywithhiswork.Eg.Tomsaidthattheshirtwasnothis,butcouldbeHenry’s.①Helen_______goonthetripwithusbutsheisn'tquitesureyet.（安徽卷）A.shallB.mustC.mayD.can②Maryisinpoorhealth.She___（可能）beillatanytime.③(全国Ⅱ)Lizawellnotwanttogoonthetrip—shehatestraveling.A.willB.canC.mustD.may在否定句中，只能用can和may.can’t“不可能”maynot“可能不”①Michael______beapoliceman,forhe’smuchtooshort.A.needn’tB.can’tC.shouldD.may（高考英语大纲全国II卷）②I’mafraidMr.Harding____seeyounow.He’sbusy.A.can’tB.mustn’tC.shouldn’tD.needn’t1在疑问句只能用can/could①————（可能）hebeverybusynow?②Where————（可能）shebenow?③-MyEnglish-Chinesedictionaryhasdisappeared.-Who_____havetakenit?A.shouldBmustCcouldD.wouldneedmust与haveto“需要”区别：needdosthneeddoing=need_______must①“必须”“一定”Mustsb..dosth?Yes,…must.No,…needn’t(=don’t_______)②“偏要”“一定要”①（广东)-Musthecometosignthispaperhimself?-Yes，he.A.needB.mustC.mayD.will②（北京）Incrowdedplaceslikeairportsandrailwaystations,youtakecareofyourluggage.A.canB.mayC.mustD.will③-MayIsmokehere?-Ifyou_______,chooseaseatinthesmokingsection.A.shouldB.couldC.mayDmust④（全国卷Ⅲ）John,lookatthetime._______youplaythepianoatsuchalatehour？A.MustB.CanC.MayD.Needshall①用于第一,三人称问句中，征求对方的意见。②用于第二、三人称陈述句：警告、命令、允诺、威胁等。选项中不能宜选shouldn’t.③按law,rule,regulation,sign,agreement,document等须做的事。①_____(要不要)I/sheshowhimin?②Ifyouwon’tdoasItellyou,you____gotothedance.A.won’tB.shan’tC.shouldn’tD.mustn’t③You____(可以)havetwodaysoffifyoufinishthetasktoday.④（江苏卷）-Ihaven’tgotthereferencebookyet,butI’llhaveatestonthesubjectnextmonth.-Don’tworry.You______haveitbyFriday.A.couldB.shallC.mustD.may⑤（重庆卷）“Theinterest(利息）____bedividedintofiveparts,accordingtotheagreementmadebybothsides，”declaredthejudge.A.mayB.shouldC.mustD.shallshould①劝告、建议、命令、应该做、道义上的责任。②用于虚拟语气,表示“惊讶”，有“竟然”“居然”...
