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1、情态动词1.情态动词主要有:can,could,may,might,must,oughtto,shall,should,will,would,need,dare，hadbetter,etc.Someofuscanusethecomputernow,butwecouldn’tlastyear.Itwillbesunnyinthedaytime,butitcouldrainlateronthisevening.-----CanIgonow?-----Yes,youcan.Couldyouwaitafewdaysforthemoney
2、?Canthisnewsbetrue?Howcanyoubesofoolish?表示“能力”表示“客观可能性”表示“请求和允许”表示“请求”,口语中代替can,使语气更委婉,主要用于疑问句,答语用can.----CouldIuseyourbiketomorrow?Yes,________.No,_______________.表示“惊异,怀疑,不相信的态度(主要用于否定句,疑问句和感叹句中)”youcanI’mafraid1.can和couldMayIwatchTVaftersupper?Yes,________________
3、__./No,_______________________.MightIuseyourtelephone?MayIgohomenow?Itmaybetrue.Shemaycometomorrow.Hemighthavesomefever.Mayyousucceed!Mayyouhavemanymoredaysashappyasthisone!youmayYoumustn’t允许,许可禁止,阻止Might比May的语气更委婉表示可能性的推测,译为“大概,可能”用might时显得更加不肯定用于祈使句表示祝愿2.May和MightA
4、computer_______thinkforitself;itmustbetoldwhattodo.A.can’tB.couldn’tC.maynotD.mightnotAmay______________can____________表主观“可能”表客观“可能”Cannot___________maynot__________不可能可能不3.may和can4I__________you,becauseIthoughtImustbewrong. A.darenotaskB.darenottoaskC.darenotaskin
5、g D.daretonotaskWeshouldbestrictwithourselves.Youshouldkeepyourpromise.Theyshouldhavearrivedbytwoo’clock.Ishouldadviseyounottodothat.Youaremistaken,Ishouldsay.AskTomtoringmeupifyoushouldseehim.ShouldIbefreetomorrow,I’llcome.Ifthingsshouldchangesuddenly,pleaseletmekn
6、ow.Whyshouldyoubesolatetoday?表劝告和建议应该表推测,“可能,应该”用于第一人称,表示说话人的一种谦逊,客气,委婉用于If从句中表示可能性很小的事情,译为“万一”“Why/How+should”表示说话人对某事不能理解.4should.5.shall与should--Excuseme,butIwanttouseyourcomputertotypeareport.--You____havemycomputerifyoudon’ttakecareofit.A.shan’tB.mightnotC.needn
7、’tD.shouldn’tAShall可表“警告、威胁、许诺、决心”等Whyshouldhethinkthat?Should表“劝告、建议”，译为“应当”；有时也表“预测”、“可能”或表示说话人的惊奇、愤怒、失望等感情。Whatshallwedonext?Shallwebeginourlessons?Shallthedriverwait?Shallhecomein?—Comein,please.Whenshallmyfatherbeabletoleavehospital?YoushallhavethebookwhenIfinis
8、hedit.Heshallbepunished.Youshallbepunishedifyouinsistondoingitthisway.用于第一,三人称,表征求对方意见或请示.用于第二,三人称陈述句中表命令,警告,允诺或威胁｝｛｝1)Hemustberead
