动词原形-过去分词-过去式
know-known-knew
run-ran-ran
are-been-were
put-put-put
drink-drunk-drank
say-said-said
have-had-had
buy-bought-bought
teach-taught-taught
see-saw-saw
tell-told-told
sit-sat-sat
leach
get-getten-got
take-taken-took
find-found-found
read-read-read
go-gone-went
meet-met-met
swim-swam-swam
come-came-came
cut-cut-cut
meke-made-made
stand-stood-stood
drive-driven-drave