小升初情态动词专项

六年级英语专项练习：情态动词一、情态动词的定义：情态动词有词义，但它不能单独作谓语，它必须和其他动词一起构成谓语。情态动词没有人称和数的变化；它的后面必须跟动词原形。二、情态动词的种类：情态动词有can(could),may,must,haveto,shall(should),will(would),need等，这些是小学阶段需掌握的情态动词。三、情态动词的用法：一、can,(could过去式）1)表示能力（体力、知识、技能）。Canyouliftthisheavybox?（体力）Marycanspeakthreelanguages.（知识）Canyouskate?（技能）2)表示请求和允许。CanIgonow?Could\Canyouhelpme?----Yes,ofcourse.\Certainly.\Sure.Could\CanyoutellmethewaytotheZoo?3)表示推测（惊讶、怀疑、不相信的态度），用于疑问句、否定句和感叹句中。Canthisbetrue?Thiscan’tbedonebyhim.Howcanthisbetrue?二、may1)表示请求和允许。否定回答时可用can’t或mustn’t，表示“不可以，禁止”。----MayIsmokeinthisroom?----No,youmustn’t.----MayItakethisbookoutoftheroom?----Yes,youcan.(No,youcan’t/mustn’t)用MayI...？征徇对方许可时比较正式和客气，而用CanI...？在口语中更常见。2）表示推测、可能性（不用于疑问句）。1．Hemaybeverybusynow.2．Yourmothermaynotknowthetruth.3）用于祈使句，表示祝愿。Mayyousucceed!三、must,haveto1)must表示必须、必要,带有命令强制口气；而haveto表示不得不，很勉强，强调客观需要。Youmustcomeintime.Wemusthelpeachother.Mysisterisill;mymotherhastolookafterher.IhadtoworkwhenIwasyourage.注意：must的否定形式mustn’t表示禁止，意思是“不能，不许”。在回答由must引起的疑问句时，如果是否定的，不能用mustn’t（禁止，不准），而用needn’t,don’thaveto（不必要）。----Mustwehandinourexercisebookstoday?----Yes,youmust.----No,youdon’thaveto/youneedn’t.2)must表示推测、可能性（只用于肯定的陈述句），意思为“一定是,必然……”。1．You’reTom’sgoodfriend,soyoumustknowwhathelikesbest.2．Yourmothermustbewaitingforyounow.四、shall,1)shall用于第一人称，征求对方的意见。Whatshallwedothisevening?2)shall用于第二、三人称，表示说话人给对方的命令、警告、允诺或威胁。1.Youshallfailifyoudon’tworkhard.(警告)2.HeshallhavethebookwhenIfinishit.(允诺)3.Heshallbepunished.(威胁)五、should和shouldn’t表示应该劝告、建议。Ishouldhelpherbecausesheisintrouble.Youshouldgotoclassrightaway.Sheshouldn’tplaycomputergamestoomuch.六、will（过去式would）1)做助动词，表示一般将来时，将要。Hewillbehomeatsix.Bobwillleaveschoolnextmonth.2)作为情态动词时表示“愿意”“意愿”“会”。Iwillhelpyou.Iwillneverdothatagain.Will/Wouldyoupassmetheball,please?相关练习：(一)用适当的情态动词填空。1.MustIborrowthebookwithmyIDcard?No,you________.2.________Iuseyourcar?Yes,you________.3.________Igohomenow?No,you_________stayhere.4.Mymotherisill.I_________stayathomeandlookafterher.5.________youlikesometea?6.You________takemoreexercise.7.________youtellmehowtogettotheQingyunPark?8.Theclock________tellusthetime.9.________youliketogofishingwithme?10.________weplayfootballthisafternoon?(二)按要求改写句子。1.Icanrunfast.I________________fast.(否定句)2.Youmustreturnthebooknow.（一般疑问句）________Ithebooknow?No,you________.3.Hecanplaybasketballwell.（一般疑问句）_______he______basketballwell?4.Theymusttakethebooksoutoftheroom.（否定句）They________________thebooksoutoftheroom.5.Heshouldgetupearly.(否定句)He_______getuplate.(三)对划线部分提问。1.Wemustn’tpicktheflowersinthepark.2.Weshouldplantmoretrees.3.Iwouldyoulikesomecakestoeat?4.Shecouldswimfiveyearsago.5.Weshouldprotectanimalsbecausetheyareourgoodfriends.6.Tomcouldgotothecinema(电影院)withhissister.(四)圈出正确答案。1）Lucyshouldherhomeworknow.A.finishesB.finishingC.finishedD.finish2）Mymotherwouldbacksoon.A.cameB.comesC.comeD.willcome3）Couldyoumeahand.A.givingB.givesC.givenD.give4）ShouldInow.A.startedB.startingC.startD.starts5）Itakethisone?A.CouldB.WillC.AreD.Do6）-CanyouspeakEnglish?-No,I.A.mustn'tB.can'tC.couldn'tD.maynot7）Yougoandseeadoctorbecauseyouhadafever(发烧).A.couldB.mightC.shouldD.would8）Jimcometonight,butheisn'tverysureyet.A.shouldB.mightC.wouldD.shall9）Thechildrenplayfootballontheroad.A.couldn'tB.couldC.mustD.mustn't10）-CanItakethisbookout?-No,you.A.mustnotB.couldnotC.willnotD.aren't11）Iliketogowithyou.A.couldB.wouldC.shouldD.will12）Sheisbleeding(流血).Shegotohospitalquickly.A.couldB.wouldC.shouldD.will13）YouwatchTVafterfinishingyourhomework.A.wouldB.canC.mustD.should14）Itislate.Igohomenow.A.couldB.wouldC.shouldD.will15）-WhatIdoatthemeeting?A.hastoB.wouldlikeC.shouldD.notshould