不规则动词的过去式sit——satthrow——threwam,is——wasdrink——drankdraw——dreware——weresing——sangfly——flewdo——didbegin——begangrow——grewhave,has——hadswim——swamput——putmay——mightgive——gavecut—cutwill------wouldride——rodecatch——caughtgo——wentwrite——wroteteach——taughteat——atedrive——drovethink——thoughthear——heardkeep——keptbuy——boughtsee——sawsleep——sleptfight——foughtfind——foundsweep——swepthold——heldwear——worefeel——felttell——toldmeet——metcome——cameget——gotmean——meantbecome——becamemake——madespeak——spoketake------tooksay——said1）is,am-wasare-were2)begin-beganring-rangdrink-drankswim-swamgive-gavesing-sangsit-satrun-ranhave-hadmake-madecome-cameeat-ate3)write-wroteride-rodespeak-spokedrive-drovestand-stoodtell-toldwin-wonget-gottake-took4)sleep-sleptsweep-sweptfeel-feltkeep-keptspell-speltspend-spentbend-bentmeet-metgo-went5)know-knewfly-flewblow-blewgrow-grewthrow-threwdraw-drew(glow-glowed)6)teach-taughtcatch-caughtbuy-boughtfight-foughtthink-thought7)find-foundhear-heardsay-saidlie-laysee-sawlearn-learntmean-meant8)put-putread-readcut-cutlet-let
