现在分词,单三形式都没什么（一般只是遵守规则就好）
单复同形
sheep,fish,Chinese,Japenese
特殊
man-men woman-women foot-feet tooth-teeth goose-geese mouse-mice child-cjhildren
过去
am,is-was get-got are-were fly-flew come-came make-made go-went see-saw have-had hear-heard do-did sit-sat eat-ate swim-swam speak-spoke stand-stood draw-drew write-wrote sing-sang take-took sleep-slept tell-told meet-met steal-stole read-read teach-taught ride-rode say-said run-ran begin-began buy-bought give-gave keep-kept drink-drank drive-drove let-let mean-meant spend-spent bring-brought 敝人小学六年,请赐教