Unit5Ifwedonothing,soontheremaybenoneleft!Thebambooforestsarebecomingsmallerandsmaller.Asaresult,pandasmaynothaveaplacetoliveorfoodtoeat.Itmightberainy.Readandpayattentiontothewordswithunderline.may的用法情态动词may,没有人称和数的变化,在句子中不能单独作谓语。might是may的过去时。后面直接跟动词原形(即不带to的不定式)构成合成谓语,常用于下列几种情况:1.may表示请求许可时,译为“可以”。might表示的语气更加委婉、客气。虽然may有自己的否定形式maynot,但否定回答常用cannot、mustnot来表达否定意思。MayIleavethebookwithyou?我可以把这本书交给你吗?Yes,youmay/can.(No,youcan’t/mustn’t.)可以。(不可以。)ThemanagertoldmeImighthaveavacation.经理告诉我,我可以休假。MightIuseyourpenforawhile?我能用用你的钢笔吗?Shemay/mightgotoShanghainextweek.下周她可能到上海去。Hemay/mightbewritingaletter.他可能正在写信。Hemay(maynot)comeheretomorrow.他明天也许会(不会)来这儿。2.may表示推测,常译成“也许,可能”等,might的可能性比may要小。否定形式常用maynot/mightnot。如:3.表示可能的方式有很多,除使用情态动词may/might以外,还可以使用表示可能的形容词和副词。maybe,perhaps和possibly都可以表示“大概,也许”,此时程度相似。但maybe和perhaps常位于句首,possibly常位于句中,maybe主要用于非正式场合,较口语化。如:MaybeIwillgowiththem.也许我会和他们一起去。Perhapstheydon’tknow.可能他们不知道。There’spossiblysomethingwrongwiththemachine.这台机器可能出问题了。possibleadj.可能的常用句型:Itispossibletodosth.意为“做某事是可能的”。如:“Itispossible+that从句”。如:Itispossibletogettotheairportbeforeseven.七点前可能到达机场。ItispossiblethatItoldhimthewrongtime.可能我告诉了他错误的时间。probably意为“很可能、大概”,可能性在这几个词中最大。如:There’sprobablylifeonotherplanets,butwehaven’tknownyet.也许其他星球上有生命,只是我们尚不知道。中考链接1.Youmustn’tgooffonyourown,becauseyou_______getlostinthemountains.(2013山东潍坊)A.shouldB.mustC.needD.might【解析】考查情态动词的用法。根据句意“你不许一个人去,因为你可能在大山里迷路”,might意为“可能”,表猜测。故选D。D2.—Lookattheboyplayingbasketballontheground.IsitGeorge?—It______behim.Hetoldmehewouldplaybasketballafterclass,buthe’snotsure.(2013甘肃兰州)A.mustn’tB.mustC.can’tD.may【解析】考查情态动词表推测。上句句意:看正在操场上打篮球的那个男孩,他是George?分句意思:他告诉我他下课后会去打篮球,但他不确定。由此推断George可能去打篮球。A不允许;B一定,表猜测的可能性很大;C不可能,表示否定猜测;D可能,也许。故选D。D3.—Haveyoudecidedwheretogoforyoursummervacation?—Notyet.We_______gotoQingdao.It'sagoodplaceforvacation.(2013福建泉州)A.mayB.needC.must【解析】本题考查情态动词。句意:——你已经决定到哪里过暑假了吗?——还没有呢,我们也许去青岛。那是个度假的好地方。情态动词表示推测时,may表“可能”,must表“一定”,can’t表“不可能”。A1.Itwould_________raintomorrow.2.Theythoughtthey__________bethereatfive.3.We’regoingonholidaysoon,_________nextmonth.4.We______comeatanothertime.5.You_______domeafavor.6._______Icanactasamessengerforyou.probablymay/mightprobablymaymightMaybePractice7.Alice______cometoChinanextmonth.8.Itis_________tofinishthehomeworkbeforenine.9.It’s________raininginHangzhounow.10._________Iwillcallyoulater.maypossiblepossiblyPerhapsAnswers:1.Mayneed2.maybe3.mayhurt4.maynotbe5.maybeplaying6.maybesleepingCompletewhatMilliesaysusingmaywiththewordsinbrackets.