(8)将i改为a,o,u等

　　sit/sat/satspit/spat/spat

　　dig/dug/dugwin/won/won

　　(9)将ell改为old

　　tell/told/toldsell/sold/sold

　　(10)词尾加t

　　learn/learnt/learntmean/meant/meant

　　dream/dreamt/dreamtspoil/spoilt/spoilt

　　(11)有两种过去式和过去分词,一种是不规则的,一种是规则的：

　　learn/learnt/learntlearn/learned/learned

　　shine/shone/shoneshine/shined/shined

　　hang/hung/hunghang/hanged/hanged

　　smell/smelt/smeltsmell/smelled/smelled

　　burn/burnt/burntburn/burned/burned

　　light/lii/litlight/lighted/lighted

　　(12)其它

　　have(has)/had/hadhear/heard/heard

　　shoot/shot/shotlose/lost/lost

　　hold/held/heldget/got/got(AmEgotten)

　　find/found/foundmake/made/made

　　leave/left/left

　　五、三者均不同：

　　(1)过去式以ew结尾、过去分词以own结尾

　　blow/blew/blownfly/flew/flown

　　grow/grew/grownknow/knew/known

　　throw/threw/thrown

　　值得注意的是:

　　show/showed/shown或showeddraw/drew/drawn