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情态动词一：情态动词的用法：常用的情态动词有can，may，must，need,should,hadbetter.1.can的用法：①表示能力“能，会”eg:HecanspeakalittleJapanese.他会说一点日语。②表示请求或许可“可以”eg:CanIhelpyou?要我帮忙吗?③表示猜测“可能”eg:Wherecanshegonow?她可能到哪里去了呢?2.may的用法：①表示请求或允许“可以”“准许”eg:MayIgohome，please?请问我可以回家吗?②表示可能性“可能”、也许”eg:Ithinkitmayrainthisafternoon.我想今天下午可能下雨。注：might为may的过去式，但也可以代替may，语气较为婉转客气或更加不肯定。eg:①Hemightnotcometoday.今天他也许不来了。(语气不肯定)②Youmightalsogetaheadachewhenyouworktoohard，当你工作太努力时，你也可能患头痛3.must的用法：①表示义务、必要或命令“必须、应该”eg:Youmustcomeearlytomorrow．你明天得早来。②表示推测时“肯定，一定”eg:Theymustbeathome.Thelightison他们肯定在家,灯亮着呢.③mustnot禁止，不许eg:Youmustnottelllies.你不许撒谎。注意：①must开头的疑问句，其否定回答通常用don'thaveto或needn't。而不用mustn'teg:---MustIfinishmyhomeworkfirst?我必须先完成作业吗？---No,youdon'thaveto/needn't.不，你不必。②can和must在表推测时，can一般否定句中，而must常用于肯定句中。eg:①ItcannotbeLiLei那个人不可能是李磊②ItmustbeLiLei那个人肯定是李磊。4.need的用法：①情态动词“需要,有必要”一般用于否定句或疑问句中。eg:Youneedn'tcomeherethisafternoon.你今天下午不必来。②行为动词“需要,有必要”可以用于各种句式中。eg:①Youdon'tneedtogonow.你不必现在就走。②Ineedtohavearest.我需要休息一下③Doweneedtofinishalltheworktoday?我们今天需要完成所有的工作吗？③need的用法的助记口诀：实义动词表“需要”，后接名、代、不定式。need后接动名词，主动形式表被动。情态动词表“需要”，没有人称数之变。其后直接加动原，多用疑问与否定。5.征求许可或给予许可，“我可以···？”用句型“Can/May/Could/MightI...?”其中CanI...?属于非正式用法，MayI...?属于正式用法。Could/MightI...?的回答通常不用could或might，而用may或can或其他表示客气的词语。6.肯定句中表推测“可能”：can,could,may,might都可以在肯定句中表“可能”。其中can的语气最强，可能性最大，其余依次递减。肯定句中表推测“一定，肯定”用must.7.疑问句中表推测“可能”：用can,could,might,而不能用may.mustn't不表示推测，而表示禁止。意义为“禁止，不准”8.否定句中表推测：maynot/mightnot：可能不cannot/couldnot：不可能eg:①Youmaynotberight．你也许不对.②Youcannotberight．你不可能对.9.以may（表许可或请求）开头的一般疑问句的肯定回答用may，否定回答用mustn't或can't。10.表示“必须”时，must表示主观看法，haveto强调客观需要。11.oughtto和should两者都表示应该，但是oughtto比should语气强。12.wouldrather与than连用，其结构是：wouldrather...than...或would...ratherthan...。would(rather)和than后面都接动词原形，如果用的动词相同，则than后省去该动词。wouldrather...than...的意义为“宁愿···而不是···”eg:Iwouldratherplayfootballthanbaseball.我宁愿踢足球而不愿打棒球。13.情态动词的助记口诀：情态动词两要点：动词原形跟后边没有人称、数之变can表能力may许可must来把责任担（必须）否定回答need换。need需要dare敢should应该wouldlike愿(意)haveto“不得不”表客观。14.hadbetter用法的助记口诀：表示“建议”和“忠告”，hadbetter为最好。建议某人“最好不···”，要用hadbetternotdo。2003-2008年河南及全国中考题2003---2008年河南中考题组1.(2005河南)Youlooktirednow,youstayathomeandhavearest.A.hadtoB.hadbetterC.wouldliketoD.wouldrather2.(2005河南)--MustIreturnthebooktomorrowmorning?--No,you.Youkeepitforthreedays.A.mustn't,mayB.mustn't,mustC.needn't,canD.needn't,must3.(2006河南)--MustIgoanddoitnow?--No,you,Westillhavetwomoredays.A.shouldn'tB.can'tC.needn'tD.won't4.(2007河南)--Ididn'tpassthemathtest.IthinkIhavespenttoomuchtimeplayingcomputergamesrecently.--Iagree.Youplaylikethatanymore.A.needn'tB.mustn'tC.maynotD.wouldn't5.(08河南)--OurclasswontheEnglishspeakingcontest.--Congratulations!Youbeveryproudofit.A.canB.needC.wouldD.must6.(08河南)Itseemsthatitisgoingtorain.You'dbetterthewindowopenwhenyouleavethehouse.A.notleaveB.leaveC.nottoleaveD.toleave2003---2008年全国中考题组1.(2003天津)YougoandaskMeimei.Sheknowtheanswer.A.must,canB.must,mayC.need,canD.can,may2.(2003福建福州)--MustIstayathome,Mum?--No,you.A.mustn'tB.maynotC.can'tD.don'thaveto3.(2003广东广州)TheboysaidhehadtospeakEnglishinclass,buthespeakitafterclass.A.couldB.didn'thavetoC.mightD.shouldn't4.(2004江苏苏州)Couldyoutellmeifhefinishtheworkontime?A.couldB.wasabletoC.isabletoD.wouldbeableto5.(2004上海)Wekeepthenewtrafficlawandlearnhowtoprotectourselves.A.mayB.shouldc.canD.need6.(2004广东佛山)--Whataniceday!Wegosurfing?--Goodidea!A.ShallB.MustC.canD.Need7.(2004乌鲁木齐)--Tom,don'tdrivetoofast,youhittheother'scars.--OK,Iwon'tMum.A.mustB.needC.mayD.haveto8.(2005安徽)Youbecarefulwithfirewhenyouhaveapicnicintheforest.It'stoodangerous.A.willB.mustC.canD.may9.(2005江苏南通)Youworryabouthim,Hewillgetwellsoon.A.needn'tB.can'tC.mustn'tD.maynot10.(2005海南)--Idon'tmindtellingyouwhatIknow.--You,I'mnotaskingyouforit.A.needn'tB.mustn'tC.maynotD.can't11.(2005厦门)I'msorry.Igonow,Myfathertoldmeonthephonethatmymotherwasill.A.canB.mayC.havetoD.think12.(2005宁波)--Don'tforgettocometomybirthdaypartytomorrow..A.Idon'tB.Iwon'tC.Ican'tD.Ihaven't13.(2006海南)--MayIgooutandplaytennis,Dad?--Yes,butyoufinishyourhomeworkfirst.A.canB.couldC.mayD.must14.(2006安徽)Althoughyoudidwellthistime,youlookdownon(看不起)others.A.hadbetterB.oughttoC.shouldn'tD.wouldn't15.(2006甘肃金昌)--Couldyoupleasepassthebookontheshelftome?--.A.YouarewelcomeB.No,Icouldn'tC.Certainly.HereyouareD.Yes,Icould16.(2006湖南常德)--Whosevolleyballisthis?--ItbeCarla's.Sheneverplaysvolleyball.Shedislikesit.A.can'tB.maynotC.must17.(2006湖南怀化)Youstopyourcarwhenthetrafficlightisred.A.mustB.mayC.can18.(2007北京)--Mary,youspeakChinese?--Yes,onlyalittle.A.mustB.needC.mayD.can19.(2007四川乐山)--MustIdotheworknow?--No,you.Youmaydoitlater.A.can'tb.mustn'tC.needn'tD.shouldn't20.(2007四川南充)ThishistorybookbeBob'ssister's.Hissisterisonlyababy.A.mustB.mightC.can't21.(2007黑龙江齐齐哈尔)--XiaoHai,yousteponthegrass.--Sorry,Idoitagain.A.needn't,won'tB.mustn't,won'tC.can't,will22.(2007辽宁十二市)--Ican'tstopsmoking,doctor,--Foryourhealth,I'mafraidyou.A.mayB.needC.havetoD.must23.(2007江苏镇江)--MayItryonthejeans?--Yes,you.A.shouldB.canC.mustD.need24.(2007陕西)--CouldIborrowyourdictionary?--Ofcourseyou.A.canb.mustC.shouldD.will2