现在时,过去式,过去分词,进行时
lend lent lent lending
sit sat sat或sittensitting
read read read reading
go went gone going
buy bought bought buying
come came come coming
begin began begun beginning
put put put putting
ring ringed或rang ringed或rung ringing
be was或werebeenbeing
forget forgot或-gatforgoten或forgotforgetting
say said said saying
think thought thought thinking
run ranrunrunning
spoil spoiled 或 spoiltspoiling