dig - dug - dug get - got -got hang - hung - hung（悬挂）/hang - hanged - hanged（上吊绞死） hold - held - held shine - shone - shone sit - sat - sat win - won - won meet - met - met keep - kept - kept sleep - slept - slept sweep - swept - swept feel - felt - felt smell - smelt - smelt leave - left - left build - built - built lend - lent - lent send - sent - sent spend - spent - spent lose - lost - lost 这些都属于一类词，过去式和过去分词都是一样的。