（1）一般情况下,动词词尾加ed,如：workedplayedwantedacted

　　（2）以不发音的e结尾动词,动词词尾加d,如：livedmoveddecideddeclinedhopedjudgedraisedwiped

　　（3）以辅音字母+y结尾的动词,把y变为i再加ed,如：studiedtriedcopiedjustifiedcriedcarriedembodiedemptied

　　（4）以一个辅音字母结尾的重读闭音节动词,双写词尾辅音字母,再加ed,如：stoppedbeggedfretteddraggeddroppedplanneddotteddripped

　　（5）注：不规则动词的过去式变化规律性不强,须多加记忆.go-went,make-made,get-got,buy-bought,come-came,fly-flew,is/am-was,are-were,see-saw,bring-brought,do-did,teach-taught,think-thought,say-said,sit-sat.read-read,spend-spent,eat-ate,give-gave,sit-sat,tell-told,write-wrote,feel-felt,find-found,hear-heard,know-knew,put-put,grow-grew,take-took,catch-caught,come-came,become-became,swim-swam,sweep—swept,sing—sang,draw—drew,