1.中间去e末尾加t,如：keep→kept,feel→felt,sleep→slept,sweep→swept 　　2.结尾d变t,如：build→built,lend→lent,send→sent,spend→spent 　　3.遇见i改为a,如：ring→rang,sit→sat,drink→drank,sing→sang,swim→swam,begin→began,give→gave 　　4.“骑(马)”“开(车)”“写(字)”——把i变o,如：ride→rode,drive→drove,write→wrote 　　5.“想”“买”“带来”“打仗”——ought换上,如：think→thought,buy→bought,bring→brought,fight→fought 　　6.“教书”“抓住”——aught切莫忘,如：teach→taught,carry→caught 　　7.ow/aw改为ew是新时尚,如：know→knew,grow→grew,throw→threw,draw→drew 　　8.“放”“让”“读”过去式与原形一样,如：put→put,let→let,read→read/red