原形——过去式be,am,is-wasare-werebegin-beganbreak-krokebring-broughtbuild-builtbuy-boughtcan-couldcatch-caughtcome-camedo-diddraw-drewdrink-drankdrive-droveeat-atefall-fellfeed-fedfeel-feltfind-foundfly-flewforght-forgotget-gotgo-wenthave,has-hadhear-heardhold-heldkeep-keptknoe-knewlearn-learnt,learnedleave-leftlet-letmake-mademay-mightmean-meantmeet-metmust-mustput-putread-readride-rodering-rangrun-ransay-saidsee-sawsell-soldshall-shouldshoe-shoeedsing-sangsit-satsleep-sleptspeak-spokestand-stoodswim-swamtake-tookteach-taughttell-toldthink-thoughtthrow-threwunderstand-understoodwill-wouldwrite-wrote 特殊疑问词:what(询问事物),howmuch(询问价格),whattime(询问时间,尤其是点钟),whatkindof(询问种类),why(询问原因),who(询问人),where(询问地点)