介绍:
go-went
have-had
climb-climbed
play-played
see-saw
give-gave
ride-rode
speak-spoke
take-took
paint-painted
fish-fished
buy-bought
do-did
sail-sailed
enjoy-enjoyed
skip-skipped
hop-hopped
add-added
need-needed
study-studied
complete-completed
point-pointed
shout-shouted
wait-waited
