Selfcheck现在完成时的结构:have/has+过去分词否定结构:haven’t/hasn’t+过去分词1.Bettyboughtsomebutter,butthebutterwasbitter,sosheboughtsomebetterbuttertomakethebitterbutterbetter.2.Ifwhitechalkchalkswhiteonablackblackboard,willblackchalkchalkblackonawhitewhiteboardthen?1.MyEnglishwritingisgood,butIneedto_________mylisteningskills.2.Idon’t____________.Couldyouexplainthatagain,please?3.Thechildren_______watchingthefilmat2o’clockandithasn’tfinishedyet.4.Haveyou_______whatyouwanttodoafterschool?5.Heisatourguide.Hehas________alloverEurope.Haveyouever...1.—HaveyoueverbeentoEurope?—No,butI______(havebeen/went)toAfricalastyear.2.—Haveyoueverbeentomyhouse?—No.ButI’mcomingtoyourparty________(tonight/thisnight).3.HasVictor________(beenever/everbeen)toChina?4.Infuture,peoplewill______(spend/waste)alongvacationeveryyear.5.Heisan_________(exchanged/exchange)studentinthisschool.1.—What’sthetrouble,doctor?—Don’tworry.Thereis______withyou.A.somethingmuchwrongB.anythingmuchwrongC.muchwrongnothingD.nothingmuchwrong2.—Wouldyouliketogoshoppingwithme?—______.A.Yes,pleaseB.Yes,I’dlovetoC.That’srightD.Quitewell3.Ihaven’tseenMrHufordays.Canyoutellme______?A.wheredoeshegoB.wherehehasgoneC.wherehegoesD.wherehego4.You’dbetter______inthestreet.It’stoodangerous.A.don’tplayB.nottoplayC.notplayD.notplaying5.Excuseme,mayI______yourtelephone?Ihavesomethingtotellmymother.A.BorrowB.callC.useD.lend6.Doyouoften______yourpenfriend?A.hearfromB.hearaboutC.hearofD.hear7.Theysaidthey______themeetinginthehall.A.willhaveB.shallhaveC.wouldhaveD.shouldhave8.Ifhe______,JackwillgotoflyakitenextSunday.A.willfreeB.willbefreeC.isgoingtobefreeD.isfree9.Marycan’tgowithus.______hastolookafter______motherathome.A.She;hisB.She;herC.He;herD.He;his10.—Where’sLiLei?—He______hissportsshoesintheroom.He______footballwithhisfriends.A.isputtingon;isplayingB.putson;willplayC.isputtingon;willplayD.puton;played11.—Don’tthrowpaperontheground,please.—______.A.Itdoesn’tm