小学情态动词的学习

小学情态动词的学习情态动词有can(could),may(might),must,haveto,shall(should,will(would),等。情态动词不能单独使用，必须与其后的动词原形构成谓语一、can,couldCanyouliftthisheavybox?（体力）Marycanspeakthreelanguages.（知识）Canyouskate?（技能）二may,might表示请求和允许。might比may语气更委婉，而不是过去式。表示“不可以，禁止”----Might/MayIsmokeinthisroom?No,youmustn’t.----May/MightItakethisbookoutoftheroom?三、must,haveto表示必须、必要。Youmustcomeintime.在回答引出的问句时，如果是否定的，不能用mustn’t（禁止，不准），而用needn’t,don’四、need作情态动词用时,常用于疑问句、否定句。1．Youneedn’tcomesoearly.2.----NeedIfinishtheworktoday?----Yes,youmust./No,youneedn’t.五、shall,should1)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)六、will,wouldWill/Wouldyoupassmetheball,please?willneverdothatagain.Theyaskedhimifhewouldgoabroad.情态动词两要点;动词原形跟后面,说话语气较委婉,can表能力may许可,must责任或义务,否定回答needn't换;should应该,would愿,haveto被迫表客观.注释:对must构成的一般疑问句作否定回答只能用needn't.1.Acanyouplaythepiano?(you/play)BNo,Ican’t,butIcanplaytheviolin.2.A___________________Chinese?(you/speak)BYes,I_____,butI___________itwell.3.A___________________?(yourbrother/drive)BYes,he_____,buthe___________well.4.A___________hisnewjobonMonday?(HuaAn/start)BNo,he_____,buthe___________onTuesday.5.A___________________chess?(yourmother/play)BNo,she_____,butshe___________poker(?K?J$6.A___________me?100?(you/lend)BNo,I_____,butI___________you?50.7.A___________the8:30bus?(Mr.Ye/catch)BNo,he_____,buthe___________the9:30bus.改错1.Shecan'tsingswell.2.Whatdishesyoucancook?3.Wheredowecangotoday?MayandmaynotMayIleavetheroom?Yes,youmay.Maywedo?No,youmaynot.(No,youmayn't)根据情景和答句，用括号中的词提问。1Thetelevisionisveryloud,andyouandyoursisterarestudying,(may)AMayweturndownthetelevision?BYes,pleaseturnitdown.2It’shot,andtheairconditionerisoff.(can)A_____________________________________________________BYes,youcanturniton.3Youandyourfriendseesomelosttourists,(can)A_____________________________________________________BOhyes,pleasehelpus!4Youwantsomeicecream,butyouhavenomoney,(can)A_________________________________________________BOfcourseyoucanborrow$20.5Youseethreeofyourfriendsplayingtennis,(may)A___________________________________________________BYes,pleasejoinus!Weneedafourthplayer.6Youdon'tunderstandanEnglishword,(may)A_______________________________________________BYes,pleaseusemydictionary.7Youwanttoorderdimsuminarestaurant,(can)A____________________________________________BYes,ofcourseyoucanhavethemenu.