know,find,catch,buy,buy,find,hear,say,mean,read,let的过去式

know,find,catch,buy,buy,find,hear,say,mean,read,let的过去式
know,find,catch,buy,buy,find,hear,say,mean,read,let的过去式

know,find,catch,buy,buy,find,hear,say,mean,read,let的过去式
knew
found
caught
bought
bought
found
heard
said
meant
read
let
————————

know, knew
find, found
catch, caught
buy, bought
hear,heard
say, said
mean, meant / meaned
read, read 与原形相同
let, let 与原形相同

knew,found,caught,bought,bought,found,heard,said,meant,read,let