buyboughtbought

　　bringbroughtbrought

　　fightfoughtfought

　　thinkthoughtthought

　　singsangsung

　　drinkdrankdrunk

　　swimswamswum

　　beginbeganbegun

　　speakspokespoken

　　breakbrokebroken

　　stealstolestolen

　　freezefrozefrozen

　　helphelpedhelped

　　comecamecome

　　teachtaughttaught

　　washwashedwashed

　　gowentgone

　　kisskissedkissed

　　fixfixedfixed

　　studystudiedstudied

　　playplayedplayed

　　我要三单现代分词过去式过去分词

　　buysbuyingboughtboughtbringsbringingbroughtbroughtfightsfightingfoughtfoughtthinksthinkingthoughtthoughtsingssingingsangsungdrinksdrinkingdrankdrunkswimsswimmingswamswumbeginsbeginningbeganbegunspeaksspeakingspokespokenbreaksbreakingbrokebrokenstealsstealingstolestolenfreezesfreezingfrozefrozenhelpshelpinghelpedhelpedcomescomingcamecometeachesteachingtaughttaughtwasheswashingwashedwashedgoesgoingwentgonekisseskissingkissedkissedfixesfixingfixedfixedstudiesstudyingstudiedstudiedplaysplayingplayedplayed