原形 过去式
fly flew
throw threw
blow blew
feed fed
pay paid
sell sold
understand understood
find found
make made
learn learnt
hear heard
lose lost
sit sit
get got
forget forgot
spend spent
lend lent
build built
catch caught
bring brought
buy bought
fight flight
think thought
teach taught
feel felt
spell spelt
leave left
sleep sleept
sweep swept
keep kept
meet met
sing sang
ring rang
begin began
drink drank
swim swam
come came
become became
run ran
can could
may might
shall should
will would