不规则动词表有些动词过去式词尾要双写:stop---stoppedplan---plannedfit----fitted原形过去式rideroderingrangrunransaysaidseesawshallshouldsingsang,sungsitsatsleepsleptspeakspokespellspelt,spelledspendspentstandstoodstealstolesweepsweptswimswamtaketookteachtaughttelltoldthrowthrewwakewaked,wokewearworewillwouldwinwonwritewrote原形过去式catchcaughtchoosechosecomecamedo/doesdiddrawdrewdrivedroveeatatefeelfeltfindfoundflyflewforgetforgotgetgotgivegavegowentgrowgrewhavehadhearheardholdheldhurthurtkeepkeptknowknewleanleaned,leantleaveleftletletlielayloselostmakemademaymightmeanmeantmeetmetmustmustputputreadread